School is wasted on the young

When I was in school, I hated stuff like this.  Now that I'm older, I guess I like it.  I'm 50% through lecture #4.  That's 3.5 hours in!  It's a Philosophy course recorded at Harvard.  (I'm not sure when, but the references make me think it was several years ago.)  My plan is to watch all 12 parts (almost 12 hours).