George didn't bother to say anything affirmative, like "Oh, yeah, that is weird," or "Nice catch'; there was no point. It was simply a brute fact of the universe that they had the same opinions about everything, that they tended to think the exact same thoughts when given the same information. The only time they ever needed to talk to each other was if, like a few moments earlier, they were observing different things. (This was why, perhaps, it had been traditional to kill one of a pair of magical twins even as late as the previous century.) Instead George pulled a scrap of parchment from his pocket, and a quill that thankfully still had some ink, and scratched onto it Tom Riddle, so that it could be looked up later.