He can come up with Reid and remind him to not get shanked. Or he can read Reid's books when he's done--Reid can get through an average textbook in thirty minutes (literally; I did the math) and he has an eidetic memory, so he will never have to read them again.

Pfff, well, once Reid remembers, they'll be able to compare worlds. And Reid can get more relevant information from the textbooks he'll undoubtedly start lining his room with.