Term | Working meaning | Illustrative example |
Structural stability | Capacity to preserve defining structural relationships under specified disturbances and over a stated time horizon. | A constitutional order retains core institutional relationships despite policy changes. |
Dynamic stability | Capacity to remain within a defined functional or behavioural regime while state variables fluctuate. | A market experiences price variation but continues to clear and perform its basic functions. |
Perpetual transformation | Continuing change in a system’s configuration, whether or not that change constitutes instability. | An industry’s products, firms and technologies are repeatedly renewed. |
Dynamic instability | A condition in which a system or coupled set of systems cannot reliably maintain a specified regime under prevailing disturbances and feedbacks. | Interdependent energy, finance and technology systems experience repeated regime disruptions. |
Meta-instability | A higher-order condition in which the rules, relationships, participants or mechanisms that sustain a regime are themselves changing in consequential ways. | A market’s participants, exchange technology, regulation and pricing conventions change together. |
Level of change | Diagnostic question | Possible observation |
Parameter change | Are values changing while the governing relationships remain broadly intact? | Prices, output, demand or resource levels fluctuate within a familiar operating regime. |
Regime change | Has the system moved into a different pattern of behaviour or functioning? | A market shifts from stable growth to persistent fragmentation or repeated supply interruptions. |
Structural change | Have the system’s components or important relationships changed? | A supply chain relocates, a dominant intermediary disappears, or network dependencies are rewired. |
Rule / mechanism change | Have the rules or processes that generate and maintain the regime changed? | Regulation, standards, property rights, platform governance or coordination mechanisms are redesigned. |
Level | Objects of study | Main question |
Micro | Individuals, firms, teams, technologies and local organizations | How do individual elements change, adapt or fail? |
Meso | Markets, industries, states, institutions, supply networks and sectors | How do linked elements restructure a system or field? |
Macro | Regional, international and global configurations | How do transformations across domains interact at a wider scale? |
Period | Potential dimensions to examine | Examples of observable proxies | Status |
1870 - 1914 | Trade, finance, telegraph networks, industrial interdependence | Trade-to-output ratios; financial integration; telegraph network coverage; crisis transmission lags | To be measured |
1914 - 1945 | War economies, trade fragmentation, financial and political shocks | Trade disruption; capital controls; wartime mobilization; cross-border transmission of shocks | To be measured |
1945 - 1990 | Bipolar institutions, regulated finance, mass production and international institutions | Trade and capital-flow measures; institutional membership; communication infrastructure; policy coordination | To be measured |
1990 - 2026 | Digital networks, global value chains, financial integration and platform infrastructures | Network centrality; cross-border value-added trade; digital connectivity; event-to-impact lags; regulatory change | To be measured |
Dimension | Operational measure (candidate) | Possible data source | Interpretive caution |
Organizational turnover | Firm entry, exit, merger and survival rates; separately, tenure in a named index | National business registers; OECD business demography; long-run firm datasets | Index tenure is not firm lifespan; entry/exit definitions and sector composition matter. |
Technology diffusion | Time from invention or first commercial use to specified adoption thresholds (e.g., 10%, 50%, 80%) | Comin & Hobijn technology diffusion dataset; national statistics; Our World in Data where definitions are suitable | Adoption thresholds and population denominators must be comparable across technologies and countries. |
Policy uncertainty | Index level, variance and persistence, with country and policy-domain coverage stated | Economic Policy Uncertainty indices; national policy datasets | News-based measures reflect media coverage and are not equivalent to actual rule changes. |
Rule volatility | Count and weighted significance of changes to laws, regulations, standards or platform rules | Official legal gazettes; regulatory trackers; WTO / Global Trade Alert for relevant trade measures | Counts alone are inadequate; code scope, direction, implementation and reversals. |
Cross-system coupling | Network density, centrality, concentration, dependency and exposure measures | OECD TiVA; UN Comtrade; input-output tables; financial and infrastructure network datasets | Connectivity may create both contagion channels and resilience through diversification. |
Shock propagation | Time from a defined shock to measurable effects in linked systems; number and magnitude of affected nodes | Event datasets; high-frequency market data; supply-chain and infrastructure records | Causal attribution is difficult; distinguish transmission from simultaneous exposure to a common cause. |
Planning horizon | Stated forecast horizon and forecast error; frequency of strategy revision | Repeated firm/government surveys; archived forecasts; scenario-planning records | Shorter horizons may reflect sector composition or incentives, not necessarily greater instability. |
Skills and task change | Change in task/skill requirements within occupations and firms over defined intervals | Occupational databases; job-posting archives; labor-force surveys | Job-ad text is not a direct measure of realized skill change; classification drift matters. |
Information environment | Trust, source diversity, factual-consensus measures and information-cascade indicators | Reuters Institute Digital News Report; national surveys; platform transparency data | Survey wording, sampling and country differences limit comparability. |
Research tradition | Overlap | Difference / boundary | Proposed contribution of PEC |
Heraclitean thought | Emphasis on becoming and flux | Broad philosophical orientation rather than an operational framework | A bounded framework for historically evolving interacting systems, with empirical questions. |
Complexity science (e.g., Mitchell, 2009) | Interaction, emergence, nonlinearity and system-level behaviour | Complexity science is a broad field with diverse formal and empirical methods | Focus on whether the conditions that sustain stability are themselves being reconfigured. |
Mathematical chaos (Lorenz, 1963) | Sensitivity and nonlinear dynamics are relevant to some systems | Mathematical chaos has precise properties and applies to specified dynamical systems | Uses “chaos” in an explicitly conceptual sense and does not generalize mathematical chaos to society. |
Non-equilibrium thermodynamics (Prigogine & Stengers, 1984) | Order and structure can emerge in non-equilibrium conditions | The core explanatory domain and physical mechanisms differ | Uses generative instability as an analogy for historical social-system analysis, without claiming physical equivalence. |
Resilience and adaptive cycles (Holling, 1973; Gunderson & Holling, 2002) | Stability, disturbance, adaptation and transformation | Resilience research distinguishes system properties and cycle dynamics in particular domains | Asks whether the rules and conditions shaping cycles are themselves changing. |
Liquid modernity (Bauman, 2000) | Erosion or fluidity of established social forms | Primarily a sociological diagnosis | Adds a proposed mechanism-based and testable research structure. |
Social acceleration (Rosa, 2013) | Changing tempo of technology, institutions and social life | Acceleration is the central focus in Rosa’s account | Treats acceleration as one mechanism among several and asks how it interacts with coupling and rule change. |
Wicked problems (Rittel & Webber, 1973) | Problems are difficult to define and lack definitive solutions | Focuses on planning and policy problems | Places wicked problems within a broader environment of interdependent transformation. |
Antifragility (Taleb, 2012) | Some systems may benefit from volatility or disorder | Primarily concerns properties and strategies of particular systems | Describes an environment in which adaptive and antifragile strategies may become valuable, without assuming they always succeed. |
Polycrisis research (e.g., Lawrence et al., 2024) | Interacting crises, feedbacks and cascading effects | Focuses specifically on crisis entanglement and its causal mechanisms | Treats polycrisis as a possible manifestation within a wider account that also includes non-crisis transformation. |
Instead of | Aim for |
Keeping a business model unchanged | Preserving the capacity to create value while changing the model when conditions require it. |
Predicting one future | Maintaining options that remain viable across several plausible scenarios. |
Trying to eliminate uncertainty | Reducing exposure, limiting irreversible commitments and improving response capacity. |
Maximizing efficiency in one assumed configuration | Balancing efficiency with redundancy, slack and substitutability where the cost of failure justifies them. |
Equating stability with sameness | Defining stability by the continued performance of essential functions. |
Term | Definition |
Perpetually Evolving Chaos (PEC) | The proposed framework for analysing historically evolving configurations of interconnected systems in which the conditions sustaining stability may themselves be reconfigured. |
Conceptual Chaos | An author-defined analytical term for a changing configuration of interacting processes, competing forces and emerging structures; distinct from randomness and mathematical chaos. |
Structural stability | The capacity to preserve defining structural relationships under specified disturbances and over a stated horizon. |
Dynamic stability | The capacity to remain within a defined functional or behavioural regime while state variables change. |
Perpetual transformation | Continuing change in a system’s configuration, whether or not the change constitutes instability. |
Dynamic instability | Difficulty maintaining a specified regime under prevailing disturbances and feedbacks. |
Meta-instability | Consequential change in the rules, relationships, participants or mechanisms that sustain a system’s regime. |
Emergent reconfiguration | The appearance of a new system-level arrangement from interactions among local elements, without a single actor designing the whole. |
Island of order | A local, conditional and maintained configuration of stability within a wider process of transformation. |
Resilience | A system’s capacity to absorb disturbance, adapt while maintaining functions, or transform; the relevant meaning depends on the system and research question. |
Strategic optionality | The preservation of feasible choices that allow an actor to respond to different plausible future conditions. |