ok, I have this friend, he's smart but not like genius smart, but he knows a lot about everything he knows the history of every product that he buys and what's in it when it started. Like I say something about salt and pepper and he'll tell me how it came to be that we use it and why we do and go into every little detail about it. Later we could be having a conversation about paper and he can tell me all the different kinds of paper that there is and how they make it and everything about it. If he doesn't know about something he'll research it on the internet or books, he doesn't come off as a Mr. know it all, but he can't seem to talk about something without going on about where it came from and how it was made etc. He also knows a lot about statistics and like test that companies do and goes on about them too. My question is, is this normal or an obsession that's running he's life?