This paper first explains why the charge of self-refutation against extreme relativism is so important and then defends extreme relativism against two of the most recent and most sophisticated accusations of self-refutation. It is shown that these accusations seem plausible only because they illicitly employ principles appropriate only to absolute truth; hence these accusations are unsound. One central topic of discussion in the paper is the relation between "a believes that p" and "p is true for a".

Recent work in the philosophy of science has taken a decidedly historicist turn. A number of writers have rejected the traditional thesis that science develops through the accumulation of firmly established truths, maintaining instead that scientific research is founded on beliefs which are presupposed without having been proven. Since these presuppositions are not established truths they are subject to revision, and a change in the presuppositions of a discipline results in a fundamental restructuring of that discipline, i.e., a scientific revolution. (...) There are a number of versions of this general approach currently under debate, and there is considerable disagreement on how the various versions are to be interpreted. The central issue of this debate is the nature of scientific revolutions and it will be useful for our purposes to establish a point of reference by sketching an extreme view of scientific revolutions, a view which is often attributed to Kuhn and Feyerabend. (shrink)