One other thing - do you remeber the AIG vice preseident who publicly resigned because of the bonus issue - Jake Desantis? Well, his degree was from MIT - in Materials Science. His Linked in profile is here
http://www.linkedin.com/pub/jake-desantis/a/401/b8bIt's him alright - the employment history matches correctly. So this is what he did with his Physical Scince degree - banking. That says it all.