Gammadoodler
Hero
Sure, and if that page number is 11,472 of combined make-believe geography/history/sociology/physics/etc.world-building book, it's going to take quite a lot for a player to get there..or the DM would have to intervene.At odds only if there's a conflict in the playstyle between the DM and players. If they are on the same page, then there is no conflict. That's why it's so important to form a group of like minded individuals.
As for how many "well actually you're character wouldn't/couldn't do that thing because in my world..."s is healthy, I don't know, but I'm gonna go with "not many".