punctuated equilibrium


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punctuated equilibrium

the theory that evolutionary change has occurred during short periods of rapid change punctuated by periods of stability Such a process would be characterized by the absence of an infinite range of intermediate forms, and supporters of the theory point to the vertebrate fossil record as evidence.
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The moment of returning to Convergence, after Reorientation, was due to the fact that a search for a new level of accreditation implies some refinement typical of Convergence and more radical changes typical of Reorientation, making different moments of punctuated equilibrium take place, concomitantly, in different processes or functional areas of the hospital: while one process is done and must be refined, another is required at another moment, or affected by some new technology and must be modified.
Comparing these cases with the spectrum of the Epstein model, we verified that the dynamics in these models are different from the dynamics of the punctuated equilibrium, as we observed in Figure 5.
This pattern termed "punctuated equilibrium," was originally identified in the biological sciences (Eldredge & Gould, 1972) and was subsequently adopted in the management literature (e.g., Tushman & Anderson, 1986; Mokyr, 1990).
(8) What is punctuated equilibrium? The reevaluation of the fossil record by Niles Eldredge and Stephen Gould, it supports the notion that evolutionary change can occur quickly at times.
In one chapter of Punctuated Equilibrium, political scientist Frank Baumgartner writes similarly of "social cascade effects." As he notes, environmental policymaking might be especially susceptible to such effects because of the "extremely powerful symbols associated with policy outcomes on all sides" (p.
Keywords: Cell-directed mutagenesis; Darwinism; gene; directed panspermia; evolutionary tree; mutationism, natural selection; neutral theory; organic evolution; origin of life; phyletic gradualism; neo-Darwinism; species; punctuated equilibrium; synthetic theory; genome; biochip; Darwinism; last universal common ancestor; organic evolution; ruh; natural computer biosystem; natural software engineering; synthetic theory; phylogenetic software differentiation; primordial biochip; transposable elements; programmed organic evolution.
The gist of punctuated equilibrium is that most evolutionary change takes place in relatively brief spurts, when new species diverge from old ones, and that species otherwise tend to remain unchanged throughout long stretches of time.
If punctuated equilibrium explains coal markets, then one must ask: Does the current fitness landscape include an even deeper valley to be reached in the future?
Individuals who follow a punctuated equilibrium path use more steps, abruptly break from corporate life, and start an unrelated business for investment and growth.
Gould was an essayist and popularizer of the highest caliber and a pretty good paleontologist, but even were his theory of punctuated equilibrium correct (and this is more of an interpretational issue than anything), it would not be an overthrow of Darwinism but an enrichment.
The theory of punctuated equilibrium he and Niles Eldredge proposed in the early 1970s, for example, warns against rejecting breaks in the fossil record before mulling over what they imply.
The book is sown through with a vocabulary of adaptive organisms, fitness, punctuated equilibrium, replication and other concepts from evolutionary science.