MENTAL MODEL · M12652

Punctuated Equilibrium

TechnicalHigh supportEvolutionary Biology

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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

Proposed by Gould and others, species remain stable for long periods, with occasional short bursts of rapid speciation events, challenging the gradualist view of evolution.

SCAFFOLDING EFFECT

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In evolutionary biology, punctuated equilibrium (also called punctuated equilibria) is a theory that proposes that once a species appears in the fossil record, the population will become stable, showing little evolutionary change for most of its geological history. This state of little or no morphol…

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Species remain stable (equilibrium) for long periods, punctuated by relatively brief episodes of rapid branching speciation, rather than gradual and uniform change.

MINIMUM ACTION

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Practice this model in one real situation:

Understand that change often occurs as 'stasis—punctuation—new stasis'
identify critical points where long-term equilibrium is disrupted in management
avoid extrapolating with assumptions of uniform gradual change.

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Source support: Explicit

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en.wikipedia.orghttps://en.wikipedia.org/wiki/Punctuated_equilibriumZH · Explicit
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