Kyle Stanford from UC-Irvine was here for a visit this past weekend, and talked about his novel argument against scientific realism. I thought there was a problem with the argument, but I now think maybe not.
Realism, here, is the epistemic thesis that we have good reason to think that the our present theories in the more mature sciences are true (or, at least, that the terms for unobservables in such theories succeed in referring). Kyle’s concern about this thesis derives from the fact that scientists are not that good at conceiving of all the alternatives to the theories that they propose.
On one level, this point is obvious: Newton didn’t, and in some interesting way, couldn’t conceive of quantum mechanics. The realist has a rejoinder that Kyle was willing to grant: exceptionalism. The exceptionalism response says that we now have a mature science and that the explanatory successes are sufficient to undermine the inductive argument from past failures to conceive of alternatives. In short, our situation is different from the situation of past great scientists, and so the induction fails.
Kyle’s response is to consider what he calls “close call” situations–cases where the alternative theories are readily available and well-confirmed by the evidence. So what he’s looking for are historical cases where a famous theorist seems incapable of formulating an alternative to their present approach to a problem.
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