His eyes narrowed through the other man's explanation. Partly because he was listening and taking it in, not wanting to miss any part of what might be a clue as to how he'd gotten there. But the more the other Kirk talked, the more Jim realized the amount of information, of certainty, was suspect. Not in the nefarious sense, but simply because it suggested a greater familiarity with this type of thing than he would have expected.

From, well. Himself.

He was going to need medical treatment in a minute, if this kept up. And a drink.

Speaking of which, he hadn't missed the lip thing, and he hadn't really meant all hydration or anything, so he moved over to the synthesizer to get a cup of water which he brought back and handed to Kirk.

"I know we're taught about the possibility of other universes at the Academy," he says after a moment. "And I know I've seen enough out here to make me believe... well, just about anything. But am I wrong in thinking you've seen something like this before?"