This is entirely anecdotal, but I'll jump in on this topic: I have twin sisters (identical). Both of them are highly intelligent (go to Ivy league schools), bu

This is entirely anecdotal, but I'll jump in on this topic: I have twin sisters (identical). Both of them are highly intelligent (go to Ivy league schools), but one has a slight "edge" on the other. Growing up, they did everything together- the only difference between the two is that the slightly "dumber" one, I used to put down a lot more and make fun of (I got along with my other sister a little better). It's funny how the little things you do when you're young (we have a great relationship now) can affect things when you're older.