Someone in my group wanted to make a neon sign for their bar, which kicked off a whole debate on "if it's not paizo published, it's not real" regarding the laws of physics and if people are actually made out of "real-world" atoms and if oxygen, helium, neon, etc actually exist in pathfinder. Arguments thrown up were "what if everything's made of anti-oxygen," etc. Super dumb. I'm saying that at some level, everything in pathfinder has to follow at least some laws of physics and be made of atoms or else we wouldn't be able to comprehend the game, at least not without a really odd ruleset.
