I am new here, but I am curious as to why raising the flop, even if it is somewhat of a feeler bet, is so wrong? It seems to me that if he doesn't raise w/that flop than he will have zero information to go on. Why would it be so bad to throw out 1k rather than shoving? If he really lasted another 10 hours it seems like he was ok to try and fight his way back w/half of his stack still in tact rather than going ahead and getting it all in even when it seems like the guy definitely could have AA.