![I want to argue that the "sudden” appearance of species in the fossil record and our failure to note subsequent evolutionary change within them is the proper prediction of evolutionary theory as we understand it. [...] Evolutionary "sequences” are not rungs on a ladder, but our retrospective reconstruction of a circuitous path running like a labyrinth, branch to branch, from the base of the bush to a lineage now surviving at its top. (Stephen Jay Gould)](https://cdn.quotesdtb.com/img/quotes_images_webp/67/stephen-jay-gould-appearance-287567.webp)
I want to argue that the "sudden” appearance of species in the fossil record and our failure to note subsequent evolutionary change within them is the proper prediction of evolutionary theory as we understand it. [...] Evolutionary "sequences” are not rungs on a ladder, but our retrospective reconstruction of a circuitous path running like a labyrinth, branch to branch, from the base of the bush to a lineage now surviving at its top.
Stephen Jay GouldRelated topics
appearance base branch bush change failure fossil labyrinth ladder lineage note now path prediction proper reconstruction retrospective running subsequent sudden topRelated quotes
Looking not to any one time, but to all time, if my theory be true, numberless intermediate varieties, linking most closely all the species of the same group together, must assuredly have existed; but the very process of natural selection constantly tends, as has been so often remarked, to exterminate the parent forms and the intermediate links. Consequently evidence of their former existence could be found only amongst fossil remains.
Charles Darwin
Game theory concepts were first explicitly applied in evolutionary biology by Lewontin (1961). His approach, however, was to picture a species as playing a game against nature, and to seek strategies which minimised the probability of extinction. A similar line has been taken by Slobodkin & Rapoport (1974). In contrast, here we picture members of a population as playing games against each other, and consider the population dynamics and equilibria which can arise.
John Maynard Smith
The theory of punctuated equilibrium, proposed by Niles Eldredge and myself, is not, as so often misunderstood, a radical claim for truly sudden change, but a recognition that ordinary processes of speciation, properly conceived as glacially slow by the standard of our own life-span, do not resolve into geological time as long sequences of insensibly graded intermediates (the traditional, or gradualistic, view), but as geologically "sudden” origins at single bedding planes.
Stephen Jay Gould
Suggestion, or rather Autosuggestion, is quite a new subject, and yet at the same time it is as old as the world. It is new in the sense that until now it has been wrongly studied and in consequence wrongly understood; t is old because it dates from the appearance of man on the earth. In fact autosuggestion is an instrument that we possess at birth, and in this instrument, or rather in this force, resides a marvellous and incalculable power.
Émile Coué
[E]volutionists sometimes take as haughty an attitude toward the next level up the conventional ladder of disciplines: the human sciences. They decry the supposed atheoretical particularism of their anthropological colleagues and argue that all would be well if only the students of humanity regarded their subject as yet another animal and therefore yielded explanatory control to evolutionary biologists.
Stephen Jay Gould