What is skepticism for Descartes, and what do we gain from pursuing doubt in the very thorough way that Descartes pursues it in the Meditations?

This is the material provided by the instructor to answer the discussion question.

and youtube video.

No required minimum as this is a weekly discussion topic. As long as the question is answered by using the provided material and citing them.

This is due by next Thursday, April 12th but of course I can turn it in sooner.