Re: Pocket AA
 

Well for one thing, when the flop was capped I felt that it was fairly likely I was up against 2 pair or a set. (66, 77, or 67 being the most likely hands). A very strong draw was also possible, but IMO less likely. When the 7 fell on the turn, I hardly considered that a safe card.

I actually considered folding.

Re: Pocket AA
 

I'd call down after the flop cap. People don't usually cap with less than two pair, but I will call the river bet unimproved just in case.