I think I can explain them...
Perspectives: each class section has a different topic that they study, look at from different perspectives (hense the name), write papers about and give speeches about. I think the point is to get you to take a complete view on topics. The class was pointless for me, because my section was taught by a crazy old yooper woman who should have been committed several years prior.
Revisions: All about writing and presentations and such. Learn how to write papers and give presentations. Basically stuff that any high school graduate should have mastered long ago.
Institutions: Covered stuff on how economics worked and also touched on how government and education work. Generally, also stuff that should be taught in high school.
These, along with World Cultures, were essentially the most pointless classes I had to take at Tech.