Ogre, your example is horribly screwed because of the stack sizes.

This is a push-or-fold situation and with the stacks as it is, it's a clear fold. Opp obviously has a hand. You have a negative expectation against ANY pair - the only things you're beating are AQ and AJ which is only being raised for 60% of buyin (!) by a maniac.

Screw it. Don't gamble. Play some solid cards (or poker...).

Put it this way - you have a stack of $50,000. Do you push AI with AK against an opponent who just raised preflop $30k?