The Crimson Binome
Hero
Fair enough, but that's really more of an issue for pick-up and convention games. Once you've played under a given GM for a couple dozen hours, a player should be able to get on the same page about how things work in this world.The NPCs will be priviledged to construe it the "correct" way, or the way the world "really is", because they have the immense advantage of sharing the perceptions and world-model of the individual who is actually deciding how the game world "really is".
I mean, unless the GM is intentionally being obtuse and hiding their experimental results from the players, but nothing can stop a dishonest GM from running a game poorly.