Aggregation & Dynamics addresses phenomena that cannot be explained by examining individual agents or their direct interactions. Here, the central objects are system-level states: output, inflation, employment, credit conditions, cycles, shocks, and propagation mechanisms that shape the economy as a whole. This domain studies how macro conditions evolve over time and how they govern outcomes independent of the fine-grained strategic details of any particular agent.
Aggregation matters because economies possess structure at scales that dwarf micro-level logic. When system variables dominate, when shocks spread through broad channels, when adjustment paths define behavior, the relevant questions shift: How does the system respond? How does it move from one state to another? How do frictions, distributions, and macro constraints shape the trajectory of outcomes? This domain captures the logic of large-scale behavior—how the economy behaves as a coherent whole.
To preserve its analytical integrity, this domain must be separated cleanly from Interaction. The transition occurs when system-level forces outweigh cross-agent influence. The exact definition of that transition is given by the Axiom that follows.
The Axiom of Economic Domains
Choice = zero interdependence; the outcome is fixed entirely by the structure of a single agent’s decision problem, with no variation arising from other decision-makers or system conditions.
Interaction = interdependence among agents; outcomes are shaped by cross-agent influence, and this domain ends the moment those cross-agent influences stop being the primary determinants of results.
Aggregation & Dynamics = interdependence with macro-states and system conditions; outcomes are shaped by system-level variables, and this domain begins the moment macro-states or propagation forces outweigh cross-agent influence.
Science Analysis Template
These are the structural patterns found across all Scientific Disciplines
1. What scale, mechanism, and assumptions define this domain?
Aggregation & Dynamics operates at the system scale, where outcomes are governed by macro-state variables rather than the detailed behavior of individual agents.
Its central mechanism is state evolution: how aggregate quantities—output, inflation, employment, credit, spending, investment, prices—adjust and propagate through time.
Its defining assumption is that system-level conditions are the primary determinants of results, meaning micro-level strategic detail can be abstracted into aggregated relationships.
This is the domain where the economy behaves as a coherent system.
2. What conditions mark the exclusion zone for Aggregation & Dynamics?
Aggregation does not apply when:
- outcomes are determined primarily by individual optimization (→ Choice),
- outcomes are determined primarily by cross-agent strategic influence (→ Interaction),
- system-level variables play no causal role,
- or micro-level detail materially alters results in ways that cannot be captured by aggregated structures.
If macro-states do not drive the phenomenon, the problem lies outside this domain.
3. How does the transition to or from Aggregation & Dynamics occur?
The transition is governed by which factor dominates the causal structure.
- If macro-states or propagation forces determine the outcome, the problem belongs to Aggregation.
- If cross-agent influence becomes the main determinant, the problem shifts back to Interaction.
- If individual decision structure becomes sufficient to explain the result, it collapses further to Choice.
Aggregation begins—and ends—based on whether system-level variables outweigh micro-level determinants.
4. What is the fundamental unit of analysis?
The fundamental unit is the macro-state:
- output
- inflation
- employment
- credit conditions
- spending and income flows
- distributions
- shocks and their propagation channels
- aggregate demand and supply dynamics
- system trajectories over time
Agents are represented only through aggregated forms (consumption functions, investment schedules, labor supply aggregates, distributions), because the system’s behavior—not individual detail—is the object of analysis.
5. What are the problem space, failure space, neighbors, and transition mechanism?
Problem space:
Phenomena where system-level variables govern outcomes—macroeconomic cycles, inflation dynamics, unemployment movements, growth paths, credit expansions and contractions, propagation of shocks, equilibrium adjustments, and dynamic responses.
Failure space:
Any case where outcomes are driven instead by:
- the isolated structure of a single agent’s decision problem (Choice),
- or cross-agent influence in markets, games, or mechanisms (Interaction).
Neighbor domains:
- Interaction
- Choice
Transition mechanism:
A shift in the primary source of outcome variation:
- from macro-states → to cross-agent influence (transition to Interaction)
- from macro-states → to single-agent structure (transition to Choice)
Aggregation governs only when system-level dynamics are the decisive explanatory force.
