What an interesting thread! I admire you philosophers. I took an introduction to philosophy recently as an undergrad, and I loved it thoroughly; found it fascinating. I could tell, though, that I just didn't have enough elasticity to my intellect to really get a grip on the intricacy of things.
I would have to have concepts hammered home again and again--and there doesn't seem to be time for that in philosophy; the mind encompasses so much, it has to keep ranging.
Sorry to hijack--I just wanted to tip my hat!