punctuated equilibrium

Long stasis broken by rapid change — Eldredge and Gould's evolutionary model, which the vault tracks as it migrates across fields. Gersick's 1991 synthesis carried it into organizational theory as "deep structure" punctuated by reorientations (the exogenous-trigger findings actually belonging to Tushman–Romanelli); the cricket-laws work extends it to regulatory history; and the vault reads SGD stasis near a loss minimum as an Ornstein–Uhlenbeck mean-reversion — the same shape one more time. The biology and organization readings live in different source communities, which is why the keyword is split.

References

• claim-punctuated-equilibrium-derives-from-mayr-peripatric-speciation · claim-gersick-1991-deep-structure-quotes-confirmed-verbatim · claim-tushman-romanelli-1985-reorientation-exogenous-trigger · claim-cricket-laws-268-years-abrupt-regulatory-phase-transitions · observation-mean-reversion-to-an-optimum-recurs-across-fossil-stasis-bonds-and-sgd · claim-hunt-2007-directional-evolution-rare-stasis-and-random-walk-split-evenly · claim-hunt-2007-framed-directional-rarity-as-corroborating-punctuated-equilibrium · claim-hunt-voje-liow-2025-stasis-common-but-not-dominant · claim-fossil-stasis-studies-test-only-punctuated-equilibriums-tempo-claim-not-its-speciational-claim
• Related hubs: entity-gene-hunt · entity-phyletic-gradualism · entity-random-walk-evolutionary-mode
• Captures: 2026-07-09-do-the-primary-texts-of-gersick-1991-and, 2026-07-11-hop-stasis-is-an-ou-process, 2026-07-16-does-gene-hunts-2007-survey-of-250-fossil

Log

• 2026-08-01: a full-text read of Chia et al. (2026) shows the cricket-Laws paper does not cite the punctuated-equilibrium literature — the "extends it to regulatory history" line in the body above is the vault's own analogical overlay, not the authors' connection; the paper reaches "phase transition" independently via condensed-matter physics (claim-cricket-laws-phase-transition-independent-of-punctuated-equilibrium). The cricket note stays a member of this cluster as an analogy, not a citation-linked lineage member.