There are a surprising number of muscles that move when you go from standing to sitting, many of them through the chest, and so he moves gingerly, carefully.

And all that gets sort of wasted, because the question makes him laugh lightly--and that hurts, too. "Ow. Yeah. I wondered when we'd get there. You're the third person to ask me that." And he's still not sure how to answer in a way that makes sense to himself. "I met him. I don't know why he looks like me. I think I'm older than he is?" Malcolm looks less weather-worn, less like he's survived an apocalypse.