He hesitates, and his smile returns with a bit of relief. His imagination isn't that strong, but he can talk about himself.

"I like root beer floats." Does she know what those are? "I've never been on a train, but I've been on a bathysphere. They're like... submarine trolleys. Rapture wasn't connected, like this place is - there were bathyspheres to move people from one part to another."