We've never had to deal with traps much in our games but the dm has been ousted (long story) and I've been thinking of starting a game. Looking at the CR's for traps....whats it for? to judge the exp. you get from survivoring the trap? (as an old dm told me...don't think this is it) Just to give the DM an idea what traps to use with PC's (as the monsters CR's) Or something else?