Punctuated Equilibria¶
Eldredge, N., & Gould, S. J. (1972). Punctuated Equilibria: An Alternative to Phyletic Gradualism. Models in Paleobiology.
Cited by¶
4 citations across 4 artifacts.
Each citation links to the sentence it supports in the citing article.
Primes¶
- Continuity vs. Rupture
- Historiography (the Renaissance, Industrial Revolution, 1789, 1917, 1989 debates), political history (regime change vs. regime continuity under new leadership), economic history (industrial take-off vs. long-accumulation models), art history (movement boundaries), philosophy of science (Kuhnian revolutions vs. gradualist alternatives), evolutionary biology (Eldredge-Gould punctuated equilibrium debate), physics (continuous vs. first- order phase transitions), organizational change management (incremental vs. transformation initiatives), and software engineering (patch vs. major-version vs. ground-up-rewrite decisions), with Eldredge and Gould (1972) extending the dimension into evolutionary biology.
This sourceFoundational paleobiological argument that species evolution shows long stasis punctuated by rapid speciation rather than smooth gradualism; canonical biological transfer of the continuity-vs-rupture dimension (supports D41-021 extension into biology and D41-025 resolution-dependent reading of the fossil record).
Supported in partVerified against the work's full text
Supports the evolutionary-biology leg only: the punctuated-equilibrium versus gradualism debate. The other disciplines and the continuity-versus-rupture dimension are outside this source.
“Both involved a more literal reading of the fossil record than is allowed under the unconscious guidance of phyletic gradualism. Both are characterized by rapid evolutionary events punctuating a history of stasis.”
- Historiography (the Renaissance, Industrial Revolution, 1789, 1917, 1989 debates), political history (regime change vs. regime continuity under new leadership), economic history (industrial take-off vs. long-accumulation models), art history (movement boundaries), philosophy of science (Kuhnian revolutions vs. gradualist alternatives), evolutionary biology (Eldredge-Gould punctuated equilibrium debate), physics (continuous vs. first- order phase transitions), organizational change management (incremental vs. transformation initiatives), and software engineering (patch vs. major-version vs. ground-up-rewrite decisions), with Eldredge and Gould (1972) extending the dimension into evolutionary biology.
- Critical Juncture
- What seems like a small geographic separation becomes an irreversible divergence in trait distributions, reproductive compatibility, and adaptive radiation paths, the punctuated-equilibrium dynamic Eldredge and Gould (1972) identified in the fossil record.
This sourceArgues species evolution shows long stasis punctuated by rapid speciation; supports the evolutionary speciation/branching example.
Supported in partVerified against the work's full text
Eldredge and Gould argue that small peripheral isolates speciate rapidly, leaving stasis punctuated by episodes of speciation seen as real breaks in the fossil record.
“A peripheral isolate develops into a new species if isolating mechanisms evolve that will prevent the re-initiation of gene flow if the new form re-encounters its ancestors at some future time.”
- What seems like a small geographic separation becomes an irreversible divergence in trait distributions, reproductive compatibility, and adaptive radiation paths, the punctuated-equilibrium dynamic Eldredge and Gould (1972) identified in the fossil record.
- Metasystem Transition
- Additional canonical reference:
This sourceFreeman, Cooper. Foundational paleobiological argument that species evolution shows long stasis punctuated by rapid speciation rather than smooth gradualism; canonical biological transfer of the continuity-vs-rupture dimension and template for cross-domain "punctuated equilibrium" analogies.
- Additional canonical reference:
- Punctuated Equilibrium
- A gradualist model predicts a uniform or normal distribution of increments; a punctuated model predicts a heavy-tailed distribution, most increments near zero and rare giant ones.
Supported in partVerified against the work's full text
Eldredge and Gould give the qualitative predictions: gradualism expects slow, even change, punctuated equilibria long stasis broken by rare rapid speciation; no statistical distributions are stated.
“Under phyletic gradualism, the history of life should be one of stately unfolding. Most changes occur slowly and evenly by phyletic transformation”
- A gradualist model predicts a uniform or normal distribution of increments; a punctuated model predicts a heavy-tailed distribution, most increments near zero and rare giant ones.
Verification¶
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Links previously used in the corpus¶
Before the registry existed this work was also linked 2 other ways.
- https://archive.org/details/B-001-004-118 ×1
- https://www.blackwellpublishing.com/ridley/classictexts/eldredge.asp ×1
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