sexta-feira, novembro 01, 2013

Filosofia e Economia (III)

Let us then assume that crises are a necessary precondition for the emergence of novel theories and ask next how scientists respond to their existence. Part of the answer, as obvious as it is important, can be discovered by noting first what scientists never do when confronted by even severe and prolonged anomalies. Though they may begin to lose faith and then to consider alternatives, they do not renounce the paradigm that has led them into crisis. They do not, that is, treat anomalies as counterinstances, though in the vocabulary of philosophy of science that is what they are. In part this generalization is simply a statement from historic fact, based upon examples like those given above and, more extensively, below. These hint what our later examination of paradigm rejection will disclose more fully: once it has achieved the status of paradigm, a scientific theory is declared invalid only if an alternate candidate is available to take its place.

[Thomas S. Kuhn, The Structure of Scientific Revolutions, 1962 (1996), p. 77]

1 comentário:

Duarte Gonçalves disse...

In other words: «In economics it takes a theory to kill a theory; facts can only dent the theorist's hide» (Samuelson, 1951)