Originally Posted by Pladio 
I don't think people who replay games mind knowing where some of the stuff is. People like Wulf and Uriziel on this forum have played Gothic I a zillion times and know every single spot on the map. Knowing where things are does not necessarily mean a degradation in enjoyment of a game.
No but I'm talking about skills that are made useless because of metagaming. If you have a skill to spend points on to detect secret doors/traps, but the locations of secret doors and traps are fixed, why would you spend points on that skill on a second playthrough (if you the player have a good memory)?