[kenjackson]

This does make one inquire -- is there nothing to learn about business? Or is it impossible to teach business in a school setting?

I'd find it odd to hear doctors say the same thing about medical school, or even lawyers about law school.

[moomba]

I think nobody disagrees with the idea that you will learn some stuff while getting your MBA. What people disagree with is the idea that you will learn more getting an MBA at a lower tier school than you will working at a startup. MBA's are great for opening doors, you will get more doors opened working at a startup or going to an Ivy League school than getting an MBA at a lower tiered school.