What can we know if we take sceptical worries such as the Münchhausen trilemma seriously? Quite a lot, actually - if the world is a certain way, namely if transcendent mediocrity is the case.

The article analyses the meta- epistemological problem of the justification of a theory of knowledge. The first section is dedicated to the morphological reconstruction of the problem, the second presents a diagnosis of the problem in terms of a metatheoretical and logically non- contradictory "petitio principii" and the third delineates the limits within which strategies for the treatment of the problem could be elaborated.

本文供中华人民共和国内使用，其中某些主题不能完全直接解释或解决。 -/- The English version is available as "Fundamentals of Philosophy - an introduction", philpapers rec DURFOP-2.

The article concerns the meta-epistemological problem of the justification of a theory of knowledge and provides a reconstruction of the history of its formulations. In the first section, I analyse the connections between Sextus Empiricus' diallelus, Montaigne's rouet and Chisholm's problem of criterion; in the second section I focus on the link between thediallelus and the Cartesian circle; in the third section I reconstruct the origin of Fries' trilemma; finally, in the last section I draw some general conclusions about (...) the issue qua a general problem for a theory of knowledge. (shrink)

A very basic introduction meant for Chinese lay people, who only have a background in the official historic-materialist worldview. -/- A version in Chinese is available as 基础哲学 ― 概论, philpapers rec DUR-4.