Aquehonga said:
How come in "Mirror,Mirror" Kirk seems to have forgotten his encounter with the Lazarus TwinsIn "M,M",Kirk acts as though he'd never been to or seen an alternate universe,when he had done both over a year earlier when he met the exisence-threatening Lazaruses.
Kirk actually deduces the situation in "Mirror, Mirror" pretty quickly, almost as soon as his group has privacy to talk about it. He guesses it's a parallel universe, not alien mind control or some kind of kidnapping/brainwashing attempt using illusion as psychological warfare. I'd say it's just as likely he is drawing upon his experience with Lazarus.