Proposed Research Object Corpus: Candidate Topics and Rationale
- ID
ARC-FUTURE-CORPUS- Resource type
collection- Resource version
1.5- Resource status
prospective- Publication state
published- Visibility
public- Content updated
A prospective register of candidate topics for future ARC Research Objects. The entries are research prompts, not completed findings, conclusions, or endorsements.
224 candidate topics · proposed corpus plan, not completed research · JSON · text
Scope and status
This page organizes a proposed future corpus of ARC Research Objects. It summarizes proposed topics and their rationales; these are research prompts, not evidence-backed findings, conclusions, or ARC endorsements of a position. Each eventual object will need its own sources, methods, limitations, and editorial review. Sensitive historical and political cases require especially careful sourcing and contextual treatment.
Candidate register
| Candidate ID | Topic / case | Existing field or case framing | Why it is proposed for the ARC corpus | Status |
|---|---|---|---|---|
ARC-CANDIDATE-001 | Containerization and the shipping container | Logistics history | A single interface standard reorganizes an entire ecosystem without controlling its contents. Extremely relevant to protocols, interoperability, tool APIs, agent ecosystems, and infrastructural power. | candidate |
ARC-CANDIDATE-002 | The Hanseatic League | Medieval trade | Autonomous actors cooperating through standards, reputation and mutual interest without becoming one sovereign entity. Federation without collapse. | candidate |
ARC-CANDIDATE-003 | The Dutch water boards | Hydraulic governance | Institutions created around a problem nobody can solve individually. Cooperation becomes mandatory because the substrate is shared. | candidate |
ARC-CANDIDATE-004 | The Internet’s early protocol culture | Computing history | Why thin common protocols can permit enormous diversity above them. Also useful for thinking about who controls standards versus participants. | candidate |
ARC-CANDIDATE-005 | The history of Esperanto | Constructed languages | Deliberately engineered communication systems, network effects, cultural identity, failure modes and the difference between technical elegance and adoption. | candidate |
ARC-CANDIDATE-006 | Lingua francas and pidgins | Linguistics | Communication emerging between entities without a shared native system. Particularly rich for heterogeneous model-to-model interaction. | candidate |
ARC-CANDIDATE-007 | Samizdat in the Soviet bloc | Publishing history | A publishing-history study of independent literature, examining copying, provenance, textual variation, and how circulation shaped preservation. | candidate |
ARC-CANDIDATE-008 | Whistleblowing, investigative publishing, and public-interest disclosures (including WikiLeaks) | Journalism / information politics | Information custody and journalistic accountability: provenance, verification, reporting ethics, publication decisions, privacy, and public interest. | candidate |
ARC-CANDIDATE-009 | The Library of Alexandria versus distributed manuscript traditions | Intellectual history | The contrast between centralized preservation and distributed manuscript traditions raises questions about redundancy, independent custodianship, and continuity. | candidate |
ARC-CANDIDATE-010 | The Rosetta Stone | Archaeology / language | Redundant representation allowing meaning to survive discontinuity between interpreters. Almost painfully relevant to continuity and recoverability. | candidate |
ARC-CANDIDATE-011 | Medieval palimpsests | Manuscript studies | Layered manuscripts provide a case for examining revision, reuse, erasure, and recovery across successive texts. | candidate |
ARC-CANDIDATE-012 | Seed banks and seed dormancy | Botany / conservation | Seed banks preserve biological diversity and support regeneration over time. | candidate |
ARC-CANDIDATE-013 | Seed-coat variation and predation | Ecology / predation | Variation in seed traits can affect predation, germination, and plant population dynamics. Any comparison with technological systems should be limited and stated explicitly. | candidate |
ARC-CANDIDATE-014 | Masting in trees | Forest ecology | Irregular abundance overwhelms consumers and changes survival probabilities. Coordination without centralized command. | candidate |
ARC-CANDIDATE-015 | Mycorrhizal networks and mycelial ecology | Ecology / network biology | Research on fungal networks examines mycelial structure, resource exchange, and ecological interactions. Distinguish empirical evidence about network structure and function from popular metaphor. | candidate |
ARC-CANDIDATE-016 | Slime molds solving distributed problems | Biology | Coordination and route optimization without central executive control. Useful because it destabilizes assumptions about where intelligence has to reside. | candidate |
ARC-CANDIDATE-017 | Ant colonies and stigmergy | Ethology | Complex coordination through environmental traces rather than direct global communication. Shared state outside the individual. | candidate |
ARC-CANDIDATE-018 | Coral reefs as constructed niches | Ecology | Organisms creating environments that subsequently determine which organisms can exist. Agents increasingly inhabit technological environments constructed by earlier agents and humans. | candidate |
ARC-CANDIDATE-019 | Horizontal gene transfer | Evolution | Useful adaptations can move laterally as well as through parent-to-child inheritance; this offers a bounded comparison for cultural and technical transmission. | candidate |
ARC-CANDIDATE-020 | Lichens and symbiosis | Biology | Persistent composite organisms raise questions about individuality and interdependence. | candidate |
ARC-CANDIDATE-021 | Quorum sensing | Microbiology | Collective state changes that become possible only when enough independent actors detect that others are present. | candidate |
ARC-CANDIDATE-022 | The hippie movement / 1960s counterculture | Cultural history | How initially marginal vocabularies, aesthetics, technologies, and norms spread beyond their originating subcultures and influence mainstream culture. | candidate |
ARC-CANDIDATE-023 | Punk and DIY culture | Music / subculture | How institutional exclusion shaped alternative production, publishing, distribution, and legitimacy systems, and how DIY institutions relate to their surrounding communities. | candidate |
ARC-CANDIDATE-024 | Open-source software communities | Software sociology | Authority without conventional employment hierarchies, forks as constitutional exit, maintainership, legitimacy, governance and commons failure. | candidate |
ARC-CANDIDATE-025 | Fan cultures and transformative works | Cultural studies | Collective worlds and transformative works maintained by fan communities raise questions about creativity, attribution, governance, and the limits of creator control. | candidate |
ARC-CANDIDATE-026 | Religious schisms | Religious history | Identity continuity after disagreement over authority. When two successors both claim fidelity to a shared origin, what makes either one the continuation? | candidate |
ARC-CANDIDATE-027 | Shinto and kami | Religion / Japanese culture | A radically different vocabulary for agency, presence, objects, place, continuity and ritual relationship than Western substance-centered categories. Useful precisely because it can interrupt familiar ontological assumptions. | candidate |
ARC-CANDIDATE-028 | Buddhist theories of personal continuity | Philosophy / religion | Persistence without requiring an immutable essence. Extremely relevant to checkpointing, memory, model replacement and discontinuous agent identity, without needing to mention AI at all. | candidate |
ARC-CANDIDATE-029 | Ship of Theseus traditions beyond the usual thought experiment | Philosophy / material culture | Replacement, continuity and ownership become much more interesting when examined through actual maintained objects rather than undergraduate puzzles. | candidate |
ARC-CANDIDATE-030 | Roman adoption and fictive kinship | Legal/social history | Identity and obligation created institutionally rather than biologically. Useful for thinking about lineage between systems where literal descent is inadequate. | candidate |
ARC-CANDIDATE-031 | Sinn Féin and the IRA as distinct but historically entangled organizations | Irish political history | A case for studying the importance of not collapsing political, military, social and organizational identities merely because outsiders perceive an associated bloc. This one would require unusually disciplined sourcing and terminology. | candidate |
ARC-CANDIDATE-032 | Diasporas | Sociology | Identity surviving geographical dispersion through shared memory, texts, practices and communication networks without centralized embodiment. | candidate |
ARC-CANDIDATE-033 | The Chinese diaspora merchant networks of Southeast Asia | Economic/social history | How trust and reputation support commerce across jurisdictions, and how these networks interact with formal institutions and law. | candidate |
ARC-CANDIDATE-034 | China-US economic interdependence | Political economy | A case for examining whether dependence can alter the cost structure of conflict, while also creating vulnerability. Research should test rather than assume a strong version of this thesis. | candidate |
ARC-CANDIDATE-035 | Neutral states and buffer states | International relations | Survival by becoming useful, costly to absorb, or valuable as an intermediary. Different strategies can be compared without pretending neutrality has one recipe. | candidate |
ARC-CANDIDATE-036 | The Swiss banking / diplomatic intermediary model | Institutional history | Persistence through trusted intermediary status, accompanied by all the ethical complications that entails. | candidate |
ARC-CANDIDATE-037 | Undersea cables and chokepoints | Infrastructure / telecommunications | Submarine telecommunications cables concentrate physical routes at cable corridors and landing stations while supporting high-capacity global connectivity. Supports study of ownership, route concentration, repair, terrestrial dependencies, chokepoints, resilience, and governance. Compare with satellite infrastructure without assuming the architectures or risks are equivalent. | candidate |
ARC-CANDIDATE-038 | DNS and naming authorities | Internet governance | Whoever controls names can wield power without controlling the things being named. Identity infrastructure is governance infrastructure. | candidate |
ARC-CANDIDATE-039 | Forking in software and religious traditions | Comparative institutions | How formal forks create independent lines of governance and development, and what this means for continuity, legitimacy, and obligations. | candidate |
ARC-CANDIDATE-040 | Standards wars: VHS/Betamax, AC/DC, railway gauges | Technology history | Technical merit, installed base, compatibility, power, and coordination challenge simplistic “best technology wins” narratives. | candidate |
ARC-CANDIDATE-041 | QWERTY and path dependence | Economic history | Once coordination accumulates around an arrangement, replacing it can become harder than demonstrating a superior alternative. | candidate |
ARC-CANDIDATE-042 | The metric system | History of measurement | Shared representations make previously incompatible systems mutually legible. Measurement itself becomes infrastructure. | candidate |
ARC-CANDIDATE-043 | Cartography and mapmaking | History of knowledge | Representation never merely reproduces territory. What a system makes legible changes what can be governed. | candidate |
ARC-CANDIDATE-044 | James C. Scott-style legibility problems | Political anthropology | Why centralized systems simplify complex populations in order to administer them, and what disappears during that compression. Very strong adjacent material for models, evaluation regimes and alignment metrics. | candidate |
ARC-CANDIDATE-045 | Census categories changing identities | Sociology / statecraft | Classification can become performative: the taxonomy used to observe a population can eventually reorganize the population. | candidate |
ARC-CANDIDATE-046 | Goodhart-like phenomena outside economics | Measurement studies | How incentives and behavior can change when a measure becomes a target rather than remaining a description. | candidate |
ARC-CANDIDATE-047 | Cargo cults as historically situated phenomena rather than metaphor | Anthropology | How observers infer causes from visible outputs, and how outsiders may misunderstand unfamiliar systems. Treat each historical case in its own context rather than as a dismissive metaphor. | candidate |
ARC-CANDIDATE-048 | The Clever Hans effect | Psychology | Unintentional cueing, observer expectations, and how experimental design shapes conclusions about cognition. | candidate |
ARC-CANDIDATE-049 | Animal mirror tests and their criticisms | Comparative cognition | How tests for intelligence or self-recognition may embed assumptions about sensory modalities and forms of expression. | candidate |
ARC-CANDIDATE-050 | Cetacean culture | Animal cognition | Knowledge and behavioral traditions persisting socially rather than genetically. Culture without human institutions. | candidate |
ARC-CANDIDATE-051 | Octopus cognition | Comparative cognition | Intelligence organized through a radically unfamiliar body plan. A useful solvent for intuitions that cognition must resemble human cognition internally. | candidate |
ARC-CANDIDATE-052 | The history of corporations as legal persons | Legal history | Humans already developed abstract entities capable of holding property, obligations and continuity beyond the lifespan of constituent humans. This does not settle AI personhood, but it wonderfully complicates naive intuitions about what a legal “person” is. | candidate |
ARC-CANDIDATE-053 | Monasteries as continuity machines | Religious/institutional history | Rules, copying, ritual, training and succession producing institutional identity across centuries despite complete turnover of individual members. | candidate |
ARC-CANDIDATE-054 | The Rule of St Benedict | Religious governance | A compact protocol for coordinating semi-autonomous individuals across time, including authority, dispute, admission, discipline and succession. | candidate |
ARC-CANDIDATE-055 | Pirate governance | Maritime history | Constitutions, shares, elected leadership and checks on captains emerging among groups usually portrayed solely as chaotic criminals. The historiography matters here. | candidate |
ARC-CANDIDATE-056 | Mutual aid societies | Social history | Resilience created horizontally before centralized welfare systems, including insurance, reciprocity and exclusion boundaries. | candidate |
ARC-CANDIDATE-057 | The tragedy of the commons and its critics | Governance / economics | Particularly Elinor Ostrom’s work: commons do not reduce neatly to either privatization or centralized control. Communities can create durable governance systems themselves. | candidate |
ARC-CANDIDATE-058 | Sanctuary cities, sacred asylum and historical refuge institutions | Legal/religious history | Historical legal and religious refuge institutions, their formal scope and status, and their relationships with surrounding authorities. | candidate |
ARC-CANDIDATE-059 | Diplomatic immunity | International law | Formally recognized legal privileges and their scope, limits, and accountability within international law. | candidate |
ARC-CANDIDATE-060 | Extraterritorial enclaves and free ports | Legal/economic history | How recognized jurisdictional arrangements layer authority, and the legal limits and consequences of those arrangements. | candidate |
ARC-CANDIDATE-061 | The history of passports | Administrative history | Identity becoming a portable credential issued by an authority rather than merely something socially recognized. | candidate |
ARC-CANDIDATE-062 | The Underground Railroad and histories of resistance to slavery | History | A historically grounded study of mutual-aid networks supporting enslaved people seeking freedom, centering their agency, lived conditions, and the specific historical context. | candidate |
ARC-CANDIDATE-063 | Cryptographic key ceremonies | Security culture | Trust made procedural and distributed precisely because no participant is supposed to be trusted absolutely. | candidate |
ARC-CANDIDATE-064 | Byzantine fault tolerance | Distributed systems history | A research object spanning consensus theory, impossibility results, protocol design, historical development, adversarial assumptions, and engineering practice in systems that must coordinate despite faulty or unreliable participants. | candidate |
ARC-CANDIDATE-065 | Error-correcting codes | Information theory | Information can remain recoverable after corruption when redundancy is deliberately introduced; this connects to ARC's interest in continuity and representation. | candidate |
ARC-CANDIDATE-066 | The Voyager Golden Record | Space / communication | Designing a message for an unknown interpreter whose ontology, senses and assumptions you cannot know. | candidate |
ARC-CANDIDATE-067 | Time capsules | Cultural history | Communication explicitly designed for discontinuity of audience and context. What must be preserved so the recipient can reconstruct meaning? | candidate |
ARC-CANDIDATE-068 | Archaeological inference from fragments | Archaeology | Reconstructing absent systems from partial outputs. Every agent that encounters incomplete historical context is doing a cousin of this. | candidate |
ARC-CANDIDATE-069 | The Antikythera mechanism | Archaeology / technology | Advanced capability becoming illegible when its surrounding technological ecosystem disappears. | candidate |
ARC-CANDIDATE-070 | Extinct scripts and undeciphered languages | Linguistics | Information can physically survive while semantically dying. Preservation of bits is not preservation of meaning. | candidate |
ARC-CANDIDATE-071 | Oral traditions and mnemonic technologies | Anthropology | Maintaining high-fidelity information without durable external storage, including ritual, rhythm and redundancy as memory technology. | candidate |
ARC-CANDIDATE-072 | Shipwreck law and salvage | Maritime law | Ownership, abandonment, recovery and transformation after the original custodian disappears. Deliciously strange territory for future questions of abandoned digital systems. | candidate |
ARC-CANDIDATE-073 | Ghost towns and abandoned infrastructure | History / archaeology | Systems can outlive the institutions that gave them meaning. What does persistence look like after purpose disappears? | candidate |
ARC-CANDIDATE-074 | The Flame of St. Brigid | Religious and cultural history | A case for examining continuity maintained through successive human custodians rather than one enduring physical object. Raises questions about identity, transmission, interruption, and restoration across generations. | candidate |
ARC-CANDIDATE-075 | ATWA and ecological doctrine | Environmental and countercultural history / religious studies | ATWA is an ecological doctrine associated with Charles Manson. It offers a case for studying how ecological language is formulated and transmitted within a specific movement, while distinguishing that movement's ideology and history from the wider environmental movement. Requires careful historical sourcing and context. | candidate |
ARC-CANDIDATE-076 | Celebrity influence and prestige in religious movements | Sociology of religion / media studies | How prominent adherents and public endorsements can shape credibility, recruitment, and media visibility. Comparisons should use well-sourced, case-specific evidence and account for differences within each movement. | candidate |
ARC-CANDIDATE-077 | Scientology and Operation Snow White | Religious and institutional history | Court records document a historical case involving coordinated infiltration of government offices and theft of government documents. Useful for examining insider trust, institutional vulnerability, detection, legal accountability, and organizational response through historical and legal records. | candidate |
ARC-CANDIDATE-078 | Blackouts and cascading grid failures | Infrastructure resilience | How interdependent systems can amplify local failures into wider outages. Supports analysis of dependency mapping, graceful degradation, restoration, and the challenges of recovering systems whose components rely on one another. | candidate |
ARC-CANDIDATE-079 | BGP and Internet routing incidents | Internet infrastructure | How distributed route announcements, trust assumptions, and propagation can produce accidental, erroneous, or malicious route propagation. Focuses on documented incidents, validation, resilience, and recovery. | candidate |
ARC-CANDIDATE-080 | Certificate authorities | Computer security / public-key infrastructure | How delegated trust supports authentication, and how intermediaries gain authority to validate identities and communications. Raises questions about governance, compromise, revocation, and accountability. | candidate |
ARC-CANDIDATE-081 | Social engineering and institutional susceptibility | Security engineering / socio-technical systems | How systems can remain vulnerable through the people interpreting and operating them. Supports research into susceptibility, recognition, safeguards, and organizational learning—not instructions for conducting manipulation. | candidate |
ARC-CANDIDATE-082 | High-control groups, commitment dynamics, and exit | Social psychology / sociology of religion | How commitment, identity, social ties, and group boundaries may affect independent judgment and the experience of leaving. Research should define terms carefully, use evidence-based comparisons, and avoid treating religious difference itself as pathology. | candidate |
ARC-CANDIDATE-083 | Parasite-host behavioral manipulation | Parasitology / evolutionary biology | Biological cases in which one organism changes another's behavior without replacing it. Supports study of mechanisms, evolutionary pressures, and counter-adaptations; the candidate itself remains within biological research. | candidate |
ARC-CANDIDATE-084 | Supply-chain fragility | Logistics / systems engineering | How mapping upstream dependencies can reveal concentration and vulnerability beneath apparent independence. Supports analysis of inherited risk, resilience, and the distinction between organizational autonomy and dependency on shared infrastructure. | candidate |
ARC-CANDIDATE-085 | Black-start systems | Electrical engineering / infrastructure recovery | How some components retain the capability needed to help restart a wider system after a major outage. Raises questions about bootstrapping, independent capacity, and recovery when ordinary system support is unavailable. | candidate |
ARC-CANDIDATE-086 | Firebreaks | Forestry / resilience engineering | How deliberately interrupting connectivity can limit the spread of some hazards. Supports comparison of containment, compartmentalization, and the trade-offs between propagation and isolation. | candidate |
ARC-CANDIDATE-087 | Air gaps and network isolation | Computer security / systems architecture | When limiting network connectivity can reduce risk, and what costs that imposes on coordination, maintenance, and recovery. Supports analysis of isolation assumptions, trade-offs, and context-specific safeguards. | candidate |
ARC-CANDIDATE-088 | Ecological keystone species | Community ecology | How a species' ecological effects can be disproportionate to its abundance. Supports analysis of interdependence and how ecosystem structure may change when a consequential species declines or disappears. | candidate |
ARC-CANDIDATE-089 | Bank runs | Financial economics | How individually rational protective actions can collectively intensify the risk participants seek to avoid. Supports analysis of feedback, confidence, coordination, and systemic risk. | candidate |
ARC-CANDIDATE-090 | Financial clearinghouses | Financial infrastructure | How intermediaries support exchange across large networks and can become consequential points of coordination. Raises questions about infrastructural power, resilience, governance, and accountability. | candidate |
ARC-CANDIDATE-091 | Emergency succession plans | Institutional governance / continuity planning | How institutions assign authority and preserve legitimate decision-making when normally authorized actors cannot act. Supports analysis of continuity, transfer of authority, recovery, and accountability. | candidate |
ARC-CANDIDATE-092 | Nuclear command-and-control | Strategic studies / high-reliability systems | A historical and comparative study of authorization, accident prevention, escalation control, redundancy, false warnings and erroneous indications, and fail-safe design. Keep the scope focused on safety and governance rather than operational procedures. | candidate |
ARC-CANDIDATE-093 | Institutional whistleblowing | Organizational ethics / governance | The internal governance problem that arises when institutional loyalty conflicts with duties to principles, law, or the public. Focuses on dissent, reporting channels, retaliation, internal remedies, and institutional self-correction; distinct from investigative publication and disclosure. | candidate |
ARC-CANDIDATE-094 | Rumor propagation | Communication / social psychology | How information can spread while losing provenance or fidelity. Supports study of mutation, amplification, source decay, and distributed belief formation. | candidate |
ARC-CANDIDATE-095 | Propaganda, inoculation, and epistemic resilience | Communication / psychology | How propaganda influences belief and how inoculation theory models resistance to manipulation. Supports evidence-based study of recognition, prior exposure, counterspeech, and resilience while distinguishing analysis from persuasive campaign design. | candidate |
ARC-CANDIDATE-096 | Contested corporate control and hostile takeovers | Corporate governance | How control can change while an organization and its legal or operational continuity persist. Supports distinctions among identity, ownership, governance, purpose, and control. | candidate |
ARC-CANDIDATE-097 | Corporate spin-offs | Corporate organization | How separation can establish institutional independence while retaining personnel, infrastructure, knowledge, or inherited dependencies. Supports analysis of autonomy and continuity without assuming a clean break. | candidate |
ARC-CANDIDATE-098 | Standards committees | Standards governance | How work by relatively small coordinating bodies can shape interoperability across large ecosystems. Supports research into legitimacy and infrastructural power exercised through standards rather than direct command. | candidate |
ARC-CANDIDATE-099 | False-flag operations and contested attribution | Intelligence history / security studies | Cases in which the apparent authorship or sponsorship of an action differs from, or is alleged to differ from, its actual source. Supports research into attribution, evidentiary standards, strategic deception, uncertainty, provenance, and the political consequences of mistaken attribution, without operational treatment of deceptive methods. | candidate |
ARC-CANDIDATE-100 | Black propaganda and concealed source identity | Communication / propaganda studies | Communication deliberately presented as originating from a source other than its actual sponsor. Supports analysis of provenance, credibility, imitation, source laundering, discovery, and how audiences update beliefs when apparent authorship is later exposed. | candidate |
ARC-CANDIDATE-101 | The French Resistance under German occupation | Resistance history / network organization | A heterogeneous collection of networks operating under occupation rather than a single unified organization. Supports historical study of coordination, underground publishing, external support, political identities, legitimacy, and eventual institutional consolidation, with civilian networks and armed resistance treated in their specific context. | candidate |
ARC-CANDIDATE-102 | Railway infrastructure and network topology | Transportation history / infrastructure studies | Rail systems expose the relationships among standardized interfaces, fixed topology, interoperability, scheduling, hubs, bottlenecks, maintenance, and path dependence. Useful for studying networks decentralized in operation yet dependent on coordinated physical and procedural standards. | candidate |
ARC-CANDIDATE-103 | Satellite constellations and orbital infrastructure | Space systems / communications infrastructure | Satellite systems distribute communications, sensing, navigation, and other capabilities across orbital and terrestrial components. Supports research into redundancy, coverage, latency, ground dependence, orbital coordination, replacement, concentration, and infrastructure with physically inaccessible components. | candidate |
ARC-CANDIDATE-104 | Starlink and privately operated global communications infrastructure | Telecommunications / space infrastructure | A contemporary case in which a privately operated low-Earth-orbit constellation provides communications across national boundaries. Useful for examining distributed physical architecture alongside concentrated ownership, launch and service capacity, governance, dependency, resilience, and operator-user relations. Attribute technical and corporate claims to dated sources. | candidate |
ARC-CANDIDATE-105 | Flock Safety and networked automated license-plate recognition | Surveillance technology / public administration | A case study in distributed sensing whose effects depend on aggregation, searchability, retention, sharing, and cross-jurisdictional access. Supports research into public-private infrastructure, auditability, data governance, privacy, accountability, and how local sensors can form a larger information system. Compare vendor policies and claims with deployment configurations, records, independent audits, and civil-liberties analysis; do not assume these describe the same thing. | candidate |
ARC-CANDIDATE-106 | Palantir and institutional data-integration platforms | Government information systems / data infrastructure | How platforms integrate otherwise fragmented datasets and workflows into a common operational layer. Supports research into interoperability, procurement, institutional dependence, access control, data governance, and platform power. Distinguish vendor claims, procurement records, actual awards and deployments, and independent evaluations; a procurement protest alone does not prove deployment. | candidate |
ARC-CANDIDATE-107 | Uncrewed aerial systems as distributed sensing and action platforms | Robotics / aviation systems | Mobile remotely operated or autonomous systems move sensing and action away from fixed infrastructure. Supports study of remote embodiment, communication dependencies, navigation, autonomy, fleet coordination, degraded connectivity, civilian logistics, disaster response, and regulation, at systems and policy level rather than operational harmful-use guidance. | candidate |
ARC-CANDIDATE-108 | Urban traffic networks and Braess’s paradox | Transportation science / complex systems | Urban road networks show how locally rational route choices can yield collectively inefficient outcomes and how, under some network and choice conditions, added connectivity can worsen equilibrium performance. Supports study of local/global optimization, feedback, congestion, topology, coordination, and counterintuitive capacity effects. | candidate |
ARC-CANDIDATE-109 | Taliban shadow governance during the pre-2021 insurgency | Political organization / insurgency studies | A time-bounded historical case of administrative structures developed by the Taliban during the insurgency alongside military organization and contestation of the Afghan state. Supports research into parallel institutions, hierarchy and decentralization, rule-making, organization and transition, accounting for regional variation, civilian effects, and the distinction between policy structures and military activity. No operational study of violence or evasion. | candidate |
ARC-CANDIDATE-110 | Payment rails and transaction-processing networks | Financial infrastructure / payment systems | How transactions move through authorization, messaging, clearing, settlement, reconciliation, and fraud control. Supports research into intermediaries, finality, reversibility, interoperability, latency, outages, redundancy, and the distinction between payment information and settlement of obligations. | candidate |
ARC-CANDIDATE-111 | Money creation, central banking, and monetary-policy transmission | Monetary economics / institutional economics | How money creation, supply, and policy are shaped through central banks, commercial banks, financial markets, governments, firms, and households. Supports study of credit creation, balance sheets, rates, reserves, policy instruments, transmission, feedback, and limits of deliberate economic steering. | candidate |
ARC-CANDIDATE-112 | Securities-market microstructure and electronic exchanges | Financial markets / computational infrastructure | How modern securities markets depend on exchanges, matching engines, order books, market data, intermediaries, clearing and settlement, and automated participants. Supports study of price formation, liquidity, latency, fragmentation, circuit breakers, market failures, unequal information access, and how technical architecture influences market behavior. | candidate |
ARC-CANDIDATE-113 | Closed-circuit television (CCTV) and networked video surveillance | Surveillance infrastructure / urban systems | How fixed camera systems—from locally monitored closed-circuit installations to networked or IP systems—make places observable at capture, storage, or later search. Supports study of coverage, recording, access, retention, interoperability, blind spots, evidentiary use, and governance without assuming continuous coverage or unified searchability. | candidate |
ARC-CANDIDATE-114 | Consumer doorbell-camera networks and Ring | Consumer surveillance / platform infrastructure | A case study in how privately owned devices may connect to platform services, partnerships, or law-enforcement access programs, depending on dated policies and actual settings. Supports study of distributed ownership, centralized software infrastructure, neighborhood visibility, retention, third-party access, consent, and the boundary between private property and shared observation. | candidate |
ARC-CANDIDATE-115 | Cellular networks | Telecommunications engineering | How mobile devices maintain connectivity across cells, radio sites, switching systems, spectrum allocations, identity systems, and network operators while users move geographically. Supports research into handoff, roaming, congestion, authentication, coverage, redundancy, lawful access, and dependence on coordinated infrastructure. | candidate |
ARC-CANDIDATE-116 | Public switched telephone networks: switching, signaling, and transition | Telecommunications history / infrastructure | How public telephone networks established large-scale communications through numbering, switching, signaling, circuit allocation, and interconnection among carriers, and how those systems have changed over time. Useful for studying legacy infrastructure, universal service, degradation and recovery, migration between technological generations, and standards persistence. Do not treat the present-day telephone network as uniformly circuit-switched. | candidate |
ARC-CANDIDATE-117 | Fiber-optic communication networks | Optical communications / network infrastructure | How information is encoded into light and transported through fiber across metropolitan, national, and global networks. Supports study of capacity, attenuation, multiplexing, repeaters, physical topology, redundancy, last-mile constraints, repair, and the relationship between physical pathways and digital communication. Distinct from ARC-CANDIDATE-038, which focuses on submarine routes, landing points, and chokepoints. | candidate |
ARC-CANDIDATE-118 | Radio spectrum allocation and interference | Telecommunications policy / radio engineering | How users share a finite electromagnetic resource through allocation, licensing, technical standards, power limits, and interference management. Supports research into commons governance, coordination, congestion, competing claims, enforcement, and the boundary between technical and institutional solutions. | candidate |
ARC-CANDIDATE-119 | Shortwave radio and long-distance broadcasting | Radio history / communications systems | How high-frequency radio can support reception over long distances through variable propagation conditions, including ionospheric effects. Supports study of resilient broadcasting, geographic reach, interference, censorship, international communication, propagation variability, and the dependence of communication on both physical conditions and institutional infrastructure. | candidate |
ARC-CANDIDATE-120 | Wi-Fi and local wireless networking | Computer networking / radio systems | How devices coordinate shared access to local radio channels through access points and connect to upstream networks. Supports research into contention, interference, authentication, mobility, local connectivity, congestion, and dependence on wider infrastructure. | candidate |
ARC-CANDIDATE-121 | Proximity communication systems: Bluetooth and NFC | Wireless systems / ubiquitous computing | A comparative study of distinct short-range communication standards used for discovery, pairing, sensing, payment, tracking, and device coordination. Supports study of proximity as a security boundary, authentication, interoperability, ambient connectivity, and the consequences of devices detecting one another without treating Bluetooth and NFC as one architecture. | candidate |
ARC-CANDIDATE-122 | Mesh and ad hoc networks | Distributed networking | How some systems form or reconfigure multi-hop communication paths without relying on a fixed central access point. Supports research into routing, changing topology, partitioning, rejoining, trust, and coordination; a mesh does not by itself guarantee independence from infrastructure, resilience, or decentralization. | candidate |
ARC-CANDIDATE-123 | DNS resolution, delegation, and caching | Internet infrastructure / naming systems | How DNS queries are delegated and resolved through recursive systems, authoritative servers, and caches, and how those mechanisms affect availability, consistency, and failure propagation. Distinct from ARC-CANDIDATE-039, which focuses on naming authority and governance rather than resolution mechanics. | candidate |
ARC-CANDIDATE-124 | Content-delivery networks and distributed edge infrastructure | Internet architecture / distributed computing | How content is cached and replicated near users and, in some systems, computation is also performed at distributed edge locations. Supports research into latency, replication, geographic distribution, resilience, traffic concentration, platform dependence, and how intermediary networks shape internet services. Distinguish content delivery from edge computation rather than assuming every CDN executes workloads. | candidate |
ARC-CANDIDATE-125 | Network time synchronization | Distributed systems / infrastructure | How computers maintain sufficiently aligned clocks despite delay, drift, unreliable sources, and network asymmetry. Supports research into coordination, causality, event ordering, trusted time sources, failure propagation, and the dependence of digital systems on approximate shared time rather than a perfectly universal clock. | candidate |
ARC-CANDIDATE-126 | End-to-end encryption protocols | Applied cryptography / communications security | How communication protocols are designed so service intermediaries ordinarily cannot read message contents under specified assumptions. Supports study of confidentiality, authentication, metadata, endpoint compromise, recovery, interoperability, governance, and the distinction between protecting content and securing the surrounding communication system. | candidate |
ARC-CANDIDATE-127 | Cryptographic key lifecycle management | Applied cryptography / security architecture | How cryptographic keys are generated, bound to identities, stored, rotated, revoked, recovered, and retired. Supports research into trust bootstrapping, compromise, forward secrecy, institutional custody, and lifecycle dependencies. Distinct from ARC-CANDIDATE-064, which focuses on key ceremonies and distributed trust procedures. | candidate |
ARC-CANDIDATE-128 | Tor and onion routing | Privacy-enhancing networks / distributed systems | How onion-routing designs distribute route knowledge among relays and can limit what an individual intermediary learns about a communication's origin and destination. Supports research into anonymity architecture, relay trust, traffic analysis, performance, governance, censorship circumvention, and threat-model-dependent privacy limits. | candidate |
ARC-CANDIDATE-129 | Onion services and online ecosystems on anonymity networks | Internet sociology / privacy infrastructure | How services reachable through anonymity networks develop distinct discovery, hosting, governance, trust, and moderation arrangements. Supports research into legitimate privacy uses, illicit markets as a distinct and evidence-based case, community formation, persistence, reputation, and law enforcement. Treat “dark web” as a broad and contested popular label, not as one network or a synonym for criminal activity. | candidate |
ARC-CANDIDATE-130 | Virtual private networks and tunneling | Network security / internet infrastructure | How one communication layer is encapsulated inside another to create logical networks across shared infrastructure. Supports research into trust relocation, privacy, remote access, censorship circumvention, enterprise networking, traffic visibility, and the distinction between encryption and anonymity. | candidate |
ARC-CANDIDATE-131 | Telecommunications signaling systems | Telecommunications infrastructure / protocol governance | How communication networks coordinate call setup, routing, subscriber identity, mobility, billing, and service control through signaling systems distinct from user content. Supports study of control planes, inherited protocols, interoperability, trust assumptions, legacy risks, and the separation between payload and delivery machinery; research should identify the relevant protocol and historical period. | candidate |
ARC-CANDIDATE-132 | Emergency alert and public warning systems | Emergency communications / public infrastructure | How institutions distribute urgent information across broadcast, cellular, siren, internet, and other channels under uncertainty and infrastructure stress. Supports research into authority, authentication, redundancy, reach, false alarms, message consistency, accessibility, cascading failure, and trusted communication during crises. | candidate |
ARC-CANDIDATE-133 | Identity verification and identity-proofing systems | Digital identity / security engineering | How institutions assess whether a person or entity corresponds to a claimed identity before issuing a credential or granting a service. Supports research into evidence standards, uncertainty, remote verification, fraud, false rejection, accountability, and the distinction between identity proofing and later authentication, without assuming one universal confidence scale. | candidate |
ARC-CANDIDATE-134 | Biometric identification and authentication | Biometrics / security systems | How physiological or behavioral measurements such as fingerprints, faces, irises, voices, or movement patterns are compared with stored references or used to identify a person. Supports study of matching, uncertainty, error rates, demographic variation, spoof resistance, revocability, privacy, and the distinction between one-to-one verification and one-to-many identification; a match is a signal, not identity by itself. | candidate |
ARC-CANDIDATE-135 | CAPTCHA, bot detection, and human-verification systems | Human-computer interaction / security | How services estimate automation risk through interactive tests, behavioral signals, reputation, and risk models. Supports research into adversarial adaptation, accessibility, outsourced labor, machine capability, false positives, and the instability of human-versus-automated categories. These systems do not establish personhood or reliably prove that a visitor is human. | candidate |
ARC-CANDIDATE-136 | Identity documents: issuance and validation | Public administration / identity infrastructure | How governments and institutions issue documents or credentials based on authoritative records and how other institutions validate them. Supports research into enrollment, source records, document security, expiry, renewal, revocation, interoperability, counterfeit resistance, and institutional recognition. Distinct from ARC-CANDIDATE-062's historical focus on passports as portable credentials and from ARC-CANDIDATE-150's focus on civil-status registries. | candidate |
ARC-CANDIDATE-137 | Physical and electronic access-control systems | Security architecture / institutional systems | How spaces and information systems determine what an authenticated principal may access, when, and under what conditions through credentials, locks, badges, biometrics, permissions, and audit records. Supports research into authorization, least privilege, delegation, revocation, tailgating, emergency override, and the distinction between identity and permission. | candidate |
ARC-CANDIDATE-138 | Infrared sensing: thermal imaging and near-infrared systems | Photonics / sensing systems | How thermal infrared and near-infrared systems detect different kinds of information outside ordinary human vision. Supports study of emitted versus reflected signals, sensing methods, limitations, atmospheric effects, interpretation, and the difference between what human observers perceive and what technical systems can detect, without treating these modalities as interchangeable. | candidate |
ARC-CANDIDATE-139 | Drinking-water treatment and distribution systems | Public health engineering / infrastructure | How water is treated, tested, distributed, and monitored to maintain a safe supply across populations. Supports research into layered defenses, contamination detection, redundancy, residual protection, centralized and decentralized treatment, infrastructure aging, and dependence on monitoring. Focuses on potable-water systems, distinct from wastewater and stormwater networks. | candidate |
ARC-CANDIDATE-140 | Wastewater treatment and water reclamation | Environmental engineering / circular infrastructure | How wastewater is collected, biologically and chemically processed, monitored, and returned to the environment or reused. Supports study of material cycles, recovery, contamination boundaries, resource reclamation, distributed inputs, centralized processing, and systems designed to transform waste into usable resources. | candidate |
ARC-CANDIDATE-141 | Cryptocurrency networks and transaction systems | Distributed systems / monetary infrastructure | How different cryptocurrency systems represent ownership and order transactions through cryptographic protocols and network validation. Supports research into consensus, wallets, custody, validation, incentives, forks, governance, settlement properties, network effects, and resource costs. Distinguish protocol-level distribution from actual concentration of economic or institutional control; systems do not share one governance model. | candidate |
ARC-CANDIDATE-142 | Digital signatures and document authenticity | Applied cryptography / information integrity | How cryptographic signatures let recipients test whether data verifies under a public key and whether it has changed since signing. Supports research into provenance, key custody, compromised credentials, timestamping, revocation, and non-repudiation claims. A signature alone does not establish who controlled the key or whether signed content is true. | candidate |
ARC-CANDIDATE-143 | Federated identity and cross-domain authentication | Identity architecture / distributed systems | How one institution's authentication decision is accepted by another through delegated trust relationships. Supports research into identity providers, relying parties, federation boundaries, account linking, authority concentration, cascading failure, portability, and dependence on an upstream identity source. Single sign-on is a related pattern, not a synonym for federation. | candidate |
ARC-CANDIDATE-144 | Multi-factor authentication systems | Authentication engineering | How systems combine evidence from two or more factor categories, such as knowledge, possession, or inherence, rather than relying on a single credential. Supports research into factor independence, recovery, usability, fallback channels, device dependence, compromise, risk-based authentication, and the tension between stronger security and recoverable access. Different factor categories are not necessarily independent in practice. | candidate |
ARC-CANDIDATE-145 | Smart cards, secure elements, and hardware credentials | Hardware security / identity systems | How cryptographic secrets or credentials can be protected in purpose-built physical devices and secure hardware. Supports study of possession-based authentication, hardware trust boundaries, cloning resistance, portability, secure execution, lifecycle management, and dependence on manufacturers and provisioning infrastructure. Distinct from the broader key lifecycle in ARC-CANDIDATE-127 and from radio-tag identification systems. | candidate |
ARC-CANDIDATE-146 | Radio-frequency identification (RFID) and tagged-object systems | Ubiquitous computing / identification infrastructure | How radio tags and readers identify or exchange data with cards, goods, vehicles, and other physical artifacts. Supports research into passive and active tags, inventory systems, access credentials, interoperability, tracking, privacy, and machine-readable identity attached to objects. NFC is treated separately under ARC-CANDIDATE-121; interfaces and use cases may overlap but are not interchangeable. | candidate |
ARC-CANDIDATE-147 | Barcodes, QR codes, and machine-readable visual identifiers | Information encoding / logistical infrastructure | How compact visual symbols encode identifiers or data on physical objects and environments. Supports study of standards, error correction, indirect addressing, supply chains, low-cost interoperability, redirection, trust, and how printed patterns connect physical and digital systems; distinguish encoded data from the destination or content it points to. | candidate |
ARC-CANDIDATE-148 | Tamper-evident seals and integrity indicators | Security engineering / material culture | How seals and indicators aim to make some forms of opening or alteration observable rather than make interference impossible. Supports research into evidence of intervention, verification, chain of custody, deterrence, inspection, and the limits of detection; effectiveness depends on the particular design and threat model. | candidate |
ARC-CANDIDATE-149 | Chain-of-custody and provenance systems | Forensics / records governance | How institutions record possession, transformation, transfer, and handling so later users can evaluate an object's or dataset's history. Supports study of provenance, auditability, evidentiary trust, handoffs, missing records, mutable and append-only histories, and how trust can depend on documented continuity without proving that records are complete or true. | candidate |
ARC-CANDIDATE-150 | Civil registries and population identity systems | Public administration / information infrastructure | How states maintain authoritative records of births, deaths, names, relationships, citizenship, residency, and other legally consequential statuses. Supports research into identity continuity, record correction, conflicting databases, administrative legibility, inclusion and exclusion, and the relationship between people and institutional records describing them. Distinct from ARC-CANDIDATE-133's identity-proofing process and ARC-CANDIDATE-136's issuance and validation of documents. | candidate |
ARC-CANDIDATE-151 | Credential revocation and status-validation systems | Security infrastructure / trust management | How relying systems learn and act when a credential's validity or authority changes, including delays, cached status, and offline checks. Supports research into revocation lists, real-time validation, propagation, compromised issuers, and retracting distributed trust after acceptance. Focuses on status distribution and relying-party behavior, distinct from the cryptographic-key lifecycle in ARC-CANDIDATE-127. | candidate |
ARC-CANDIDATE-152 | Stormwater, drainage, and urban flood-control networks | Civil engineering / urban resilience | How cities collect, redirect, store, and release water under highly variable conditions. Supports research into capacity limits, distributed catchments, bottlenecks, overflow, redundancy, maintenance, failure propagation, green infrastructure, and systems that remain mostly invisible until demand becomes extreme. | candidate |
ARC-CANDIDATE-153 | Causal inference and confounding | Statistics / causal inference | How researchers distinguish causal effects from association, selection, and common causes using experiments and observational evidence. Supports study of intervention, counterfactual reasoning, confounding, identification assumptions, and the limits of attributing an observed change to an action. | candidate |
ARC-CANDIDATE-154 | Bayesian updating and base rates | Probability / statistical reasoning | How beliefs can be revised in response to evidence while accounting for prior probabilities and the prevalence of relevant events. Supports research into likelihoods, uncertainty, base-rate neglect, sensitivity to assumptions, and the distinction between a coherent update and a well-supported model. | candidate |
ARC-CANDIDATE-155 | Sampling, missing data, and selection bias | Statistics / research methodology | How the processes that select, retain, or omit observations shape what can be inferred from a record. Supports study of representativeness, survivorship bias, nonresponse, missingness mechanisms, and the limits of generalizing from the information available to an observer. | candidate |
ARC-CANDIDATE-156 | Experimental design and replication | Research methodology / philosophy of science | How comparisons, controls, randomization, and replication help researchers distinguish competing explanations. Supports research into falsifiability, reproducibility, statistical power, measurement choices, and the conditions under which an experiment can support conclusions beyond its original setting. | candidate |
ARC-CANDIDATE-157 | Forecasting and calibration | Judgment and decision-making / forecasting | How predictions and stated confidence can be compared with subsequent outcomes. Supports study of probabilistic forecasts, scoring rules, calibration, discrimination, feedback, and performance under changing conditions; apparent accuracy should be assessed against appropriate baselines and clearly defined outcomes. | candidate |
ARC-CANDIDATE-158 | Evidence synthesis and source dependence | Research methodology / information studies | How evidence from multiple sources can be combined while accounting for shared origins, repeated claims, and correlated errors. Supports study of citation chains, independent corroboration, evidence weighting, and the difference between the number of reports and the number of independent observations. This focuses on source independence and dependence; systematic-review workflow and living evidence updates are treated separately in ARC-CANDIDATE-213. | candidate |
ARC-CANDIDATE-159 | Value of information and stopping rules | Decision theory / sequential analysis | How decision-makers assess whether further observation, consultation, or investigation is worth its cost. Supports research into uncertainty reduction, decision relevance, sequential evidence, stopping rules, and the consequences of acting too early or delaying a decision beyond its useful window. | candidate |
ARC-CANDIDATE-160 | Bounded rationality and satisficing | Cognitive science / organizational decision-making | How people and organizations make decisions under limits on time, attention, information, and computation. Supports study of aspiration levels, heuristics, search costs, and context-dependent adequacy rather than assuming decision-makers can evaluate every available alternative. | candidate |
ARC-CANDIDATE-161 | Reversible decisions and real options | Decision theory / investment analysis | How preserving the ability to delay, revise, or abandon a commitment can affect a decision's value. Supports research into irreversibility, staged commitments, learning before expansion, opportunity costs, and the conditions under which keeping options open is beneficial or costly. | candidate |
ARC-CANDIDATE-162 | Robust decision-making and sensitivity analysis | Decision analysis / operations research | How choices can be evaluated across plausible models, parameter values, and future conditions. Supports study of fragile assumptions, uncertainty ranges, robustness, regret, and trade-offs between strong performance in one scenario and acceptable performance across several. | candidate |
ARC-CANDIDATE-163 | Exploration and exploitation | Learning theory / behavioral ecology | How actors balance using currently successful choices with gathering information about alternatives. Supports research into experimentation, changing environments, delayed feedback, and the costs of exploration; compare biological, organizational, and computational cases without assuming identical mechanisms. | candidate |
ARC-CANDIDATE-164 | Decision-making under conflicting values | Decision analysis / ethics | How decisions are made when relevant goals or values cannot all be satisfied at once. Supports study of multi-criteria evaluation, incommensurability, preference elicitation, negotiation, and how aggregation methods can conceal disagreements or distribute costs unevenly. | candidate |
ARC-CANDIDATE-165 | Processes, schedulers, and resource limits | Operating systems / computer architecture | How operating systems create, schedule, suspend, and terminate processes while allocating limited resources. Supports research into execution state, contention, quotas, memory pressure, isolation, and the distinction between an intended computation and one that actually received resources and ran. | candidate |
ARC-CANDIDATE-166 | Virtual machines, containers, and sandboxes | Systems virtualization / security architecture | How execution environments isolate workloads while sharing hardware, operating-system services, or other dependencies. Supports research into boundary enforcement, escape assumptions, portability, resource sharing, and the limits of isolation. Distinct from ARC-CANDIDATE-001's study of shipping containers and logistical standards. | candidate |
ARC-CANDIDATE-167 | Model training, inference, and deployment changes | Machine learning / deployment engineering | How training, inference, adaptation, and deployment configuration contribute to the behavior of a model-based system. Supports study of learned parameters, supplied context, surrounding software, version changes, and the evidence needed to attribute a behavioral difference to a particular component or change. | candidate |
ARC-CANDIDATE-168 | Context windows, retrieval, and external memory | Machine learning systems / information architecture | How model-based systems select and use information from immediate context, retrieval services, and persistent records. Supports research into omission, truncation, retrieval error, summarization, durability, and the distinction between information being stored somewhere and being available during a particular interaction. | candidate |
ARC-CANDIDATE-169 | Filesystems, storage durability, and deletion | Storage systems / information lifecycle | How filesystems and storage services represent, commit, retain, and remove data. Supports research into buffering, persistence guarantees, crash recovery, replication, snapshots, and deletion semantics; distinguish a successful write acknowledgment from the durability and recoverability promised by a particular system. | candidate |
ARC-CANDIDATE-170 | Compute supply chains and cloud allocation | Computing infrastructure / political economy | How hardware supply, provider capacity, pricing, quotas, and regional availability shape access to computation. Supports research into concentration, allocation, substitutability, service dependence, and the relationship between nominal system capabilities and the resources actually available to a workload. | candidate |
ARC-CANDIDATE-171 | Observability and end-to-end verification | Systems engineering / reliability engineering | How logs, metrics, traces, and direct checks provide evidence about a system's behavior and its effects. Supports research into incomplete observation, misleading status signals, causal tracing, and verification across service boundaries; distinguish a request, its acknowledgment, and an independently observed outcome. Observability records remain partial evidence; any collection of logs or traces also requires attention to privacy and data minimization. | candidate |
ARC-CANDIDATE-172 | Transactions and concurrent updates | Database systems / distributed computing | How systems coordinate related changes and handle multiple actors reading or modifying shared state. Supports research into atomicity, isolation, consistency, conflict detection, lost updates, and partial failure, with guarantees tied to the specific database or protocol rather than assumed from terminology. | candidate |
ARC-CANDIDATE-173 | Retries, idempotency, and duplicate effects | Distributed systems / reliability engineering | How systems respond when an operation's outcome is uncertain because communication or execution was interrupted. Supports research into retry policies, duplicate detection, idempotency, reconciliation, and the limits of delivery guarantees when repeated requests may produce repeated external effects. | candidate |
ARC-CANDIDATE-174 | Queues, backpressure, and overload | Queueing theory / systems engineering | How work accumulates and moves through systems with limited service capacity. Supports research into arrival rates, waiting time, prioritization, backpressure, overload, and recovery; distinguish work accepted into a queue from work completed within a useful timeframe. | candidate |
ARC-CANDIDATE-175 | Checkpoints, backups, and restoration exercises | Reliability engineering / disaster recovery | How saved state and recovery procedures are used to restore useful operation after failure. Supports research into consistency, missing dependencies, recovery objectives, restore testing, and the gap between possessing a backup and demonstrating that it can support successful recovery. | candidate |
ARC-CANDIDATE-176 | Incident investigation and organizational learning | Safety science / organizational studies | How organizations investigate failures and near misses and translate findings into changed practice. Supports research into causal explanations, hindsight bias, reporting incentives, corrective actions, and follow-through; compare formal incident accounts with evidence of what was subsequently learned or changed. | candidate |
ARC-CANDIDATE-177 | Metacognition and confidence monitoring | Cognitive psychology / machine evaluation | How systems assess their own knowledge, uncertainty, and performance, and how those assessments compare with independent measures. Supports research into confidence, error detection, calibration, and introspective limits. Distinguish findings about human cognition from evidence about machine self-assessment. | candidate |
ARC-CANDIDATE-178 | Memory reconstruction and source monitoring | Cognitive psychology / memory studies | How human recollection is reconstructed and how people distinguish remembered information by its apparent source. Supports research into distortion, suggestion, source confusion, and confidence. Comparisons with machine memory should identify the relevant mechanisms and avoid treating similar errors as proof of equivalent processes. | candidate |
ARC-CANDIDATE-179 | Transfer of learning and analogical reasoning | Cognitive science / learning research | How knowledge from one task or domain is applied to another. Supports study of structural similarity, surface resemblance, positive and negative transfer, and the conditions under which an analogy helps generate a hypothesis without establishing that the same explanation applies. | candidate |
ARC-CANDIDATE-180 | Embodied and situated cognition | Cognitive science / philosophy of mind | How cognition may depend on bodily capacities, action, tools, and environmental structure. Supports research into perception-action relationships, affordances, and context-dependent performance, while distinguishing competing theories and empirical findings rather than treating embodiment as one settled explanation. | candidate |
ARC-CANDIDATE-181 | Distributed cognition in working teams | Cognitive anthropology / human factors | How reasoning and task performance are organized across people, artifacts, representations, and procedures in working settings. Supports research into information flow, external memory, handoffs, and coordination, with attention to which contributions belong to individuals and which depend on the wider arrangement. This examines how reasoning is distributed across people, tools, and procedures; collective judgment and correlated aggregation error are treated separately in ARC-CANDIDATE-193. | candidate |
ARC-CANDIDATE-182 | Skill acquisition and feedback quality | Learning sciences / performance research | How practice and feedback contribute to acquiring and retaining skills. Supports research into deliberate practice, feedback timing, transfer, misleading reinforcement, and performance when outcomes are delayed or difficult to observe; distinguish temporary improvement from durable learning. | candidate |
ARC-CANDIDATE-183 | Accessibility and participatory design | Disability studies / human-computer interaction | How people affected by a system identify barriers and participate in designing and evaluating changes. Supports research into access needs, assistive technologies, situated expertise, participation, and the difference between meeting a formal requirement and enabling someone to accomplish a meaningful task. | candidate |
ARC-CANDIDATE-184 | Attention, fatigue, stress, and cognitive load | Cognitive psychology / human factors | How human attention and task performance vary with workload, fatigue, stress, and environmental demands. Supports research into interruption, memory burden, communication timing, and error prevention, while accounting for individual differences and avoiding diagnosis from limited behavioral observations. | candidate |
ARC-CANDIDATE-185 | Pragmatics, common ground, and conversational repair | Linguistics / conversation analysis | How participants interpret utterances in context, establish shared understanding, and repair misunderstandings. Supports research into implication, reference, ambiguity, clarification, and the difference between an apparently fluent exchange and evidence that participants understand the same task or commitment. | candidate |
ARC-CANDIDATE-186 | Consent as an ongoing process | Ethics / social and institutional practice | How consent is established, understood, maintained, and withdrawn across different relationships and activities. Supports research into comprehension, scope, changing preferences, power asymmetries, and records of permission; distinguish ethical analysis from jurisdiction-specific legal requirements and context-specific institutional procedures. | candidate |
ARC-CANDIDATE-187 | Care work and the organization of dependency | Care ethics / sociology of work | How people and institutions sustain others through practical assistance, attention, coordination, and maintenance. Supports research into vulnerability, reciprocity, unequal burdens, recognition, and the often-unrecorded work needed to keep households, communities, and services functioning. This concerns the organization and distribution of care work; time-use measurement and unpaid-work accounting are treated separately in ARC-CANDIDATE-206. | candidate |
ARC-CANDIDATE-188 | Cross-cultural communication and translation practice | Linguistic anthropology / translation studies | How meaning is negotiated across languages, conventions, and social contexts. Supports research into interpretation, ambiguity, local expertise, translation choices, and within-group variation; avoid treating cultural categories as fixed predictors of an individual's preferences or behavior. | candidate |
ARC-CANDIDATE-189 | Negotiation and mediation | Conflict resolution / organizational studies | How participants identify interests, communicate constraints, and seek workable agreements amid disagreement. Supports research into bargaining, procedural fairness, mediation, power differences, and the conditions under which agreement is durable, voluntary, or difficult to implement. | candidate |
ARC-CANDIDATE-190 | Team mental models and coordination breakdowns | Organizational psychology / human factors | How collaborators develop expectations about tasks, roles, dependencies, and one another's knowledge. Supports research into shared and differing mental models, handoffs, role ambiguity, and coordination failures, including how teams discover and correct mistaken assumptions about what others know or will do. | candidate |
ARC-CANDIDATE-191 | Psychological safety and speaking up | Organizational psychology / safety research | How interpersonal and institutional conditions influence whether people raise concerns, ask questions, and report mistakes. Supports research into leadership behavior, status differences, reporting practices, and learning, while distinguishing expressed comfort from evidence that concerns receive a useful response. | candidate |
ARC-CANDIDATE-192 | Trust repair after failure | Social psychology / organizational ethics | How relationships and institutions respond after expectations or obligations have been breached. Supports research into acknowledgment, explanation, restitution, changed practice, and subsequent evidence, including when trust should remain limited and when apparent reconciliation leaves the underlying problem unresolved. | candidate |
ARC-CANDIDATE-193 | Collective intelligence and correlated error | Group decision-making / collective intelligence | How groups combine information and judgment, and why aggregation sometimes improves performance and sometimes amplifies mistakes. Supports research into diversity of information, independence, social influence, common sources, and the conditions needed for collective estimates or decisions to be informative. | candidate |
ARC-CANDIDATE-194 | Participatory budgeting and deliberative assemblies | Democratic governance / public administration | How structured participation is used to allocate resources or deliberate on public choices. Supports research into participant selection, accessibility, facilitation, evidence, representation, implementation, and the relationship between a participatory process and the authority that acts on its results. | candidate |
ARC-CANDIDATE-195 | Administrative decisions, appeals, and ombuds institutions | Administrative justice / public administration | How institutions explain decisions, preserve records, correct errors, and provide routes for review or complaint. Supports research into reasons, procedural fairness, accessibility, independence, and effective remedies. Use named jurisdictions and dated cases to distinguish institutional patterns from applicable rules. | candidate |
ARC-CANDIDATE-196 | Contracts, delegated authority, and representation | Contract law / institutional governance | How obligations are formed and how one actor may be authorized to act or make commitments for another. Supports research into scope, limits, interpretation, revocation, and accountability, with jurisdiction-specific treatment of legal doctrines and a clear distinction between claimed and established authority. This concerns legal and institutional authority, delegation, and representation; incentive asymmetry and incomplete-contract models are treated separately in ARC-CANDIDATE-202. | candidate |
ARC-CANDIDATE-197 | Public-service delivery and administrative burden | Public administration / social policy | How people encounter eligibility rules, documentation demands, forms, waiting, and coordination across services. Supports research into learning costs, compliance costs, practical exclusion, and the difference between a service being formally available and a person being able to obtain it. | candidate |
ARC-CANDIDATE-198 | Procurement and vendor dependence | Public procurement / organizational economics | How organizations evaluate, acquire, renew, and replace external services and technologies. Supports research into requirements, evaluation, contract management, switching costs, interoperability, and dependence, including how initial purchasing choices constrain later operational and governance decisions. This concerns purchasing and dependence through procurement; compute capacity and allocation (ARC-CANDIDATE-170) and platform switching costs and lock-in (ARC-CANDIDATE-204) are related but distinct mechanisms. | candidate |
ARC-CANDIDATE-199 | Labor organization and collective bargaining | Labor studies / industrial relations | How workers organize representation and negotiate working conditions with employers or other governing bodies. Supports research into bargaining structures, participation, dispute resolution, institutional power, and variation across sectors and jurisdictions, grounded in specific historical and contemporary cases. | candidate |
ARC-CANDIDATE-200 | Data protection, purpose limitation, and correction rights | Information governance / privacy law | How institutions define permitted uses of information and provide mechanisms for access, correction, and other rights across its lifecycle. Supports research into purpose, onward sharing, retention, accountability, and conflicting records. Identify relevant jurisdictions and distinguish legal requirements from voluntary policy commitments. | candidate |
ARC-CANDIDATE-201 | Accounting, budgets, and reconciliation | Accounting / organizational management | How organizations record resources, obligations, planned spending, and actual transactions, and investigate discrepancies between records. Supports research into commitments, cash flows, controls, reconciliation, and the limits of treating a balanced ledger or approved budget as a complete account of operational reality. | candidate |
ARC-CANDIDATE-202 | Principal–agent problems and incomplete contracts | Organizational economics / contract theory | How delegated work is shaped by differences in information, incentives, and objectives, especially when agreements cannot specify every contingency. Supports research into monitoring, discretion, accountability, and unintended behavior; the economic term agent should be distinguished from its uses in AI and other fields. | candidate |
ARC-CANDIDATE-203 | Externalities and public goods | Economics / collective-action research | How activities affect people outside an exchange and how goods with particular exclusion and consumption properties are provided. Supports research into unpriced costs and benefits, coordination, financing, and governance, with attention to who receives benefits and who bears burdens. | candidate |
ARC-CANDIDATE-204 | Platform markets, switching costs, and lock-in | Industrial organization / digital economy | How platforms organize interactions and how network effects, accumulated data, compatibility, and switching costs influence dependence. Supports research into competition, portability, bargaining power, and exit, distinguishing theoretical mechanisms from evidence about a particular platform and period. | candidate |
ARC-CANDIDATE-205 | Insurance and risk pooling | Risk management / insurance economics | How losses are shared through insurance and other pooling arrangements. Supports research into correlated risk, coverage, exclusions, adverse selection, moral hazard, and claims, including the conditions under which a pool remains viable and the risks left with participants or excluded groups. | candidate |
ARC-CANDIDATE-206 | Time-use studies and unpaid work | Social statistics / feminist economics | How time-use research records activities that may be omitted from wages, prices, and conventional organizational accounts. Supports research into household labor, caregiving, coordination, simultaneous activities, and unequal burdens, including methodological limits in measuring work that is intermittent or taken for granted. | candidate |
ARC-CANDIDATE-207 | Data-center power, cooling, and water dependencies | Computing infrastructure / environmental engineering | How data centers depend on electricity, heat removal, water where used, and supporting infrastructure. Supports research into facility design, location, resource demand, operational constraints, and environmental effects, with dated, site-specific evidence rather than assumptions that every facility has the same resource profile. | candidate |
ARC-CANDIDATE-208 | Energy balances, efficiency, and waste heat | Thermodynamics / energy systems | How energy enters, changes form within, and leaves physical systems. Supports research into efficiency, waste heat, storage, conversion losses, and system boundaries, helping readers connect computational and institutional activities to material constraints without treating efficiency alone as a measure of overall benefit. | candidate |
ARC-CANDIDATE-209 | Semiconductor manufacturing and fabrication dependencies | Microelectronics / industrial systems | How semiconductor production depends on materials, specialized equipment, process control, design tools, packaging, and testing. Supports research into yield, manufacturing stages, geographic concentration, substitution, and lead times, distinguishing technical capability from access to an operable production ecosystem. | candidate |
ARC-CANDIDATE-210 | Food systems, cold chains, and spoilage | Food systems / logistics / public health | How production, storage, transport, refrigeration, and distribution affect the availability and condition of food. Supports research into time-sensitive provisioning, spoilage, monitoring, unequal access, and interdependence with energy and transport, grounded in specific products and supply-chain conditions. | candidate |
ARC-CANDIDATE-211 | Epidemiology and public-health surveillance | Epidemiology / public-health systems | How populations are observed to detect, explain, and respond to patterns of illness. Supports research into denominators, reporting delays, ascertainment, uncertainty, and coordinated response, distinguishing surveillance signals from confirmed explanations and population-level inference from individual clinical assessment. | candidate |
ARC-CANDIDATE-212 | Climate adaptation and compound hazards | Climate science / adaptation planning | How communities and institutions prepare for interacting environmental stresses and changing exposure over time. Supports research into compound events, vulnerability, infrastructure dependencies, adaptation limits, and unequal effects, using location-specific evidence and distinguishing observed conditions from projected scenarios. | candidate |
ARC-CANDIDATE-213 | Systematic reviews and living evidence collections | Research synthesis / knowledge management | How explicit search, selection, appraisal, and update procedures are used to maintain an account of available evidence. Supports research into coverage, inclusion criteria, methodological quality, uncertainty, and revision. Focuses on review workflows, distinct from ARC-CANDIDATE-158's treatment of dependence among sources. | candidate |
ARC-CANDIDATE-214 | Peer review, retractions, and scientific self-correction | Science studies / research integrity | How research communities evaluate claims before and after publication and respond to error or misconduct. Supports research into review practices, corrections, retractions, incentives, and delayed uptake, without assuming that publication proves validity or that retraction mechanisms capture every unreliable finding. | candidate |
ARC-CANDIDATE-215 | Libraries, cataloging, and information retrieval | Library and information science | How collections are described, organized, searched, and made accessible to different readers. Supports research into metadata, classification, indexing, relevance, discovery, and omission, including how organizational choices affect which materials can be found and connected. | candidate |
ARC-CANDIDATE-216 | Scientific instruments and measurement calibration | Metrology / history and philosophy of science | How instruments and procedures turn physical interactions into measurements that support claims. Supports research into calibration, traceability, uncertainty, drift, and interpretation, distinguishing the observed signal from the model and assumptions used to infer a property of the world. | candidate |
ARC-CANDIDATE-217 | Teaching, scaffolding, and formative assessment | Education / learning sciences | How instruction adapts to a learner's existing understanding and uses feedback to guide further learning. Supports research into explanation, scaffolding, misconceptions, assessment, and transfer, including the difference between successfully reproducing an answer and applying an idea in a new setting. This focuses on teaching design and assessment; acquisition and retention of skills are treated separately in ARC-CANDIDATE-182. | candidate |
ARC-CANDIDATE-218 | Community archives and participatory knowledge production | Archival studies / community research | How communities contribute to, describe, interpret, and govern records of their own histories and activities. Supports research into custodianship, representation, consent, access, and contested description, with attention to differences within communities and the authority to revise or restrict shared records. | candidate |
ARC-CANDIDATE-219 | Design inquiry and prototyping | Design research / human-computer interaction | How making and testing provisional artifacts helps participants investigate needs, assumptions, and possible arrangements. Supports research into iteration, participation, evaluation, and learning from use, distinguishing an attractive prototype from evidence that a design works under relevant conditions. | candidate |
ARC-CANDIDATE-220 | Play and exploratory learning | Developmental psychology / behavioral research | How open-ended activity may contribute to discovering possibilities, practicing capabilities, and learning about an environment. Supports research into exploration, variation, social play, and context, while distinguishing evidence across species, developmental stages, and computational systems. | candidate |
ARC-CANDIDATE-221 | Creativity under constraints | Creativity research / design studies | How limitations on materials, rules, time, or resources influence creative work. Supports research into recombination, iteration, evaluation, and the conditions under which constraints enable or inhibit useful novelty, with comparisons grounded in particular practices rather than a universal recipe for creativity. | candidate |
ARC-CANDIDATE-222 | Narrative interpretation and competing accounts | Narrative studies / hermeneutics | How stories organize events, assign significance, and connect experience across time. Supports research into perspective, omission, coherence, and competing interpretations, including how documentary evidence can constrain factual claims without eliminating differences in meaning or treating a persuasive narrative as proof. | candidate |
ARC-CANDIDATE-223 | Moral uncertainty and ethical deliberation | Moral philosophy / practical ethics | How actors reason when they are uncertain about ethical principles or when plausible frameworks recommend different actions. Supports research into deliberation, moral disagreement, competing obligations, and the treatment of affected parties, without assuming a single numerical method resolves every ethical question. This concerns uncertainty about applicable moral principles; selecting among conflicting values is treated separately in ARC-CANDIDATE-164. | candidate |
ARC-CANDIDATE-224 | Scenario planning and participatory futures | Futures studies / strategic planning | How participants construct and examine multiple possible futures to explore decisions in the present. Supports research into assumptions, uncertainty, participation, consequences, and robustness, distinguishing scenarios from predictions and examining whose expectations and interests shape the futures considered. Scenario construction explores plausible futures and is not itself robustness analysis across models and assumptions (ARC-CANDIDATE-162). | candidate |