sexta-feira, 23 de maio de 2008

A estrutura da teoria evolutiva - II

Do livro do Gould (2002, p. 30):
"I believe, the revised structure of evolutionary theory (...) might be characterized as expansion and revision accordingo to a set of coordinated principles, all consonant with our altered Zeitgeist vs the scientific spirit of Darwin's own time. The modern revision seeks to replace Darwin's unifocal theory of organismic selection with a hierarchical account; his unidirectional theory of adaptational construction in the functionalist mode with a more balanced interaction of these external causes, treating internal (or structural) constraints primarily as positive channels, and not merely as limitations; and his unilevel theory of microevolutionary extrapolation with a model of distinctive but interacting modes of change, each characteristic for its tiers of time. In short, a hierarchy of interacting levels, each important in a distinctive way, for Darwin's single locus; an interaction of environmental outsides with organic insides for Darwin's single direction of causal flow; and a set of distinctive temporal tiers for Darwin's attempt to situate all causality in the single microevolutionary world of our own palpable moments"

(p. 43):
"(...) our brains seek pattern, while our cultures favor particular kinds of stories for explaining these patterns - thus imposing a powerful bias for ascribing conventional deterministic causes, particularly adaptationist scenarios in our Darwinian traditions, to patterns well within the range of expected outcomes in purely stochastic systems"

Ainda Gould (2002, p. 46):
"History (...) must not be dismissed as a humanistic frill upon the adamantine solidity of "real" science, but must be embraced as the coordinating context for any broad view of the logic and reasoning behind a subject so close to the bone of human concern as the science of life's nature and structure"

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