Radical skepticism

{{Short description|Philosophical position that knowledge is most likely impossible}}

{{Use American English|date=April 2021}}

{{Use dmy dates|date=November 2021}}

{{Epistemology sidebar}}

Radical skepticism (or radical scepticism in British English) is the philosophical position that knowledge is most likely impossible.{{Cite book |last=Feyerabend |first=Paul |title=For and against Method |publisher=University of Chicago Press |year=1999 |isbn=0-226-46775-9 |location=Chicago |pages=395}} Radical skeptics hold that doubt exists as to the veracity of every belief and that certainty is therefore never justified. To determine the extent to which it is possible to respond to radical skeptical challenges is the task of epistemology or "the theory of knowledge".{{Cite book |last=Dancy |first=Jonathan |title=A Companion to Epistemology |publisher=Blackwell |year=1993 |isbn=0-631-19258-1 |location=Oxford |pages=89}}