In his book The Retreat to Commitment Professor Bartley raised an important problem: can rationalism can rationalism be held in a rational way, that is, in a way that complies with its own requirements? Or is there bound to be something irrational in the rationalist's position? Briefly, Hartley's answer was that an element of irrationalism is involved in extant versions of rationalism; however, Bartley proposed a new version of rationalism that can, he claimed, be held in a way that is (...) rational according to its own account of rationality. Bartley called this ‘Comprehensively Critical Rationalism’. (shrink)

This work opens with a development of the notion of Unfathomed Knowledge, which Bartley makes clear by using it to explain such recent scientific advances as the development of drugs for the treatment of AIDS, and by showing its implications for such far-flung fields as the Marxist theory of alienation, the sociology of knowledge, patent law, and morality.

"Bartley and Radnitzky have done the philosophy of knowledge a tremendous service. Scholars now have a superb and up-to-date presentation of the fundamental ideas of evolutionary epistemology." --Philosophical Books.

Popper formulates and explains his non-justificationist theory of knowledge. Science--empirical science--aims at true explanatory theories, yet it can never prove, finally establish, or justify any of its theories as true, not even if it is in fact a true theory. Science must continue to question and criticize all its theories, even those which happen to be true.