Defining Skepticism

Source

Skepticism

Standard definition:
A skeptic about subject matter 'S' = One who denies that knowledge is possible about subject matter 'S'.
But, if 'S' represents everything, does the skeptic claim to know that their skeptical claim is true - that no knowledge can be claimed about 'S'? Is that not dogmatism?


Fallibilism

The fallibilist claims that no matter how confidently held, a belief could always be false - that we might not know what we think we know.

Why?
Because knowledge is FACTIVE. That is, you cannot know that P (for any proposition P) unless P is true. You can think you know that P, but once you discover P is false you have to withdraw your knowledge claim.

(Taken from the University of Melbourne philosophy lecture - Dr Karen Jones)