Cycle
A pattern that repeats, returning to its starting state again and again.
At a glance
Key signals
25% cross fields · reaches 15 more
- Earth & Space Sciences
- Biology
- Physics
- Explanation
- Examples
- Misconception
- Sourced relations
- Attribution
Dependencies
What this concept builds on and what it makes possible — derived from the atlas’s dependency, causal and structural relations, not from every related edge.
System context
Cycleis aPatternEstablished
A cycle is a repeating pattern.
Mechanism: A cycle is a pattern that returns to its start: a sequence of stages that repeats over and over, like the seasons or a heartbeat.
Carbon cycleis aCycleEstablished
The carbon cycle is a cycle of matter through the Earth system.
Mechanism: Carbon flows from air to plants to animals to soil and back, returning again and again — the same repeating structure as any cycle.
- NOAA — The Carbon Cycle (educational resource) verification pendingmoderate evidence
Seasonalityis aCycleEstablished
Seasonality is a yearly cycle.
Mechanism: Seasonality is a yearly cycle: the tilt of Earth's axis makes daylight and warmth rise and fall on a repeating annual pattern.
Structural role & consequence
Interpreted from the current atlas graph — what the connections mean, not just how many there are.
Currently dark in the atlas: no key date stored · 4 of 4 of its relations lack claim-level evidence.
atlas representation · Describes the current Thinking OS representation, not the state of the world.
Exercises 2 annotated mental models — a concept that connects several thinking patterns.
curated · Curated annotations, not a derived measure.
Structural neighbourhood: 4 → 35 → 157 concepts reachable within 3 hops.
structural · Structural reach — being reachable is not the same as being understood.
cross-field
3 within-field, 1 cross-field
Strengths & constraints
Constraints
- Evidence coverage currently thin in the atlas — few of its relationships carry claim-level evidence. atlas representation
- No dated history stored — the atlas records no key date for this concept. atlas representation
Conditions
- Read structurally — most of its relationships carry no external evidence yet, so claims here are graph-derived. structural
Seen through each discipline
How this concept sits in each of its fields — derived from its real connections in the graph, not asserted.
Cycle is studied in this field.
Through this lens it connects to Oscillation, Pattern and Carbon cycle.
Related ideas to explore
Concepts that look related but are not yet connected here — candidates for a connection to reason about, not established links.
This idea also appears in…
The same structure shows up in other disciplines. These are real recurrences drawn from the graph — a starting point for asking “what carries over, and what changes?”
Oscillation22 disciplines · 24 concepts
Stocks and flows40 disciplines · 33 concepts
Concepts
- OscillationMechanics
shares a mental model · explicitly analogous
shares a mental model · crosses a discipline boundary
shares a mental model
shares a mental model
shares a mental model
shares a mental model
A cycle is a pattern that keeps coming back to where it began — day and night, the seasons, the carbon cycle, a repeating rhythm in music. Cycles let us predict what comes next.
Mental models at work here
Oscillation
A repeated back-and-forth movement around a central value. How often it repeats is its frequency; how far it swings is its amplitude.
Look for something that keeps returning to where it started: a swing, a heartbeat, a vibrating string.
Stocks and flows
A stock is an amount that accumulates; flows are the rates that add to or drain it. The stock changes only when inflow and outflow differ.
Think of a bathtub: the water level (stock) rises or falls depending on the tap (inflow) and the drain (outflow).
- Connects 4 other ideas across 3 disciplines.
- A cross-disciplinary bridge — its connections reach into 15 other fields.
- Most of its connections are of the “Kind & structure” kind.
- It exercises 2 reusable thinking patterns.
Derived from the graph’s real structure — observations, not a score.
Sources
- This Dynamic Earth: The Story of Plate Tectonics (USGS) (1996) verified