Not Just What - But When - Should We Doubt?

For years I have taught a course online for Marist College, called World Views and Values.  It's essentially an Introduction to Philosophy course, with a bit more emphasis set upon the conception of the world, the social and political sphere, and human nature.  Starting out as a 10-week course, in the last year or so, it has been shortened to an 8-week term - so it's a pretty intense experience for students in the school of Professional Studies, who often have had no background in p...