but we 'd made our target on this one and it was pretty clear that we were n't going to be able to get a penny more . do you need to buy something ? '' `` i can ... but i do n't know what they do . the knock on the door pulls me back to the present , and , one by one , all of my professors filter in . maybe save that for when you guys are alone ? not that he was arrogant , but he always knew things came a bit too easily for him . 