Sherlock blinked a few times, looking at John in shock. He had to be joking. That wasn't how people reacted. He felt strangely... Pleased. Someone other than his mother or father had praised his abilities. It felt good. "No, not all people can do it," Sherlock scoffed, though there was a small smile on his lips. "It's nothing to do with magic. And I just... Took in the way you dress, the way you act, minute details that other people miss. I can't completely explain, but to me it was all obvious. It's kind of science... The science of deduction I like to call it. My brother can do it too." Sherlock made a slight face, eyes still fixed on John. They hadn't moved since he had entered the carriage. "Do you really mean it when you say it was amazing?" He ventured quietly, almost nervously. He was just waiting for it to be some kind of sick joke. Sherlock was... reasonably well known among other pureblood families. The Holmes were quite important and as such their children were known of. For Mycroft it was perfect. He had all the contacts and followers he needed. It wasn't so good for Sherlock.