"The weather? Physics? Biology? I've always been fond of anatomy - I blame the Doctor. Did you know that blood makes up seven percent of the body's total weight?"
That? That's why Elliot didn't get much social interaction. If the twitch at the edge of his mouth were a hint, he was actually joking, but he delivered the line completely deadpan. "Or do randomly selected bits of trivia not count as small-talk?"