McCoy would have been surprisingly understanding with Peter's story. He'd certainly seen stuff that was at least that odd. He listened with real interest as Peter talked about the people he knew who had traveled in time, "How did they do it? I mean, how did they go back and return home? And how did takin stuff from the past not mess up the future?"

He lit right up when Peter mentioned chemistry, "I love chemistry! And all science really. Doctor and all that, but science is just the best! You plan to be a chemist when you grow up?" It wasn't meant to be insulting, but it might come across that way. McCoy would apologize if it did insult the kid.