I was watching Steve Keene's talks on what's wrong with Neoclassical Economics (one: http://www.youtube.com/watch?v=XZKjQtrgdVY http://www.youtube.com/watch?v=X

I was watching Steve Keene's talks on what's wrong with Neoclassical Economics (one: http://www.youtube.com/watch?v=XZKjQtrgdVY http://www.youtube.com/watch?v=XZKjQtrgdVY) as he shows why economists get all this wrong. Its strange to me that economists make assumptions tat each marginal dollar gets spent the same way regardless of who it is given to....