I'm just going to throw another random PS question on this thread. How formal do most people make their essays? An MD who has served on an adcom in the past told me they didn't need to be real formal, so I wrote mine with this in mind. Now a couple of my friends have read it, and they each said it was good, but very informal. So I'm wondering, assuming I use proper grammar and spelling, if its ok to be rather conversational and informal. Thanks!