-You can't research books when your corresponding skill level is at maximum, it sais; 'your skill is too high to research this book' or something along those lines. Makes sense? Not really, not being able to read a book just because it won't teach you anything new is weird, immersion breaking, takes away an extra thing to do when you have nothing to do, breaks role-playing, prevents player from working towards the 'research bonus thingy' to unlock, etc, etc... -There's many ways to drop do