Something for me to think about for Bedine, literacy.
No, not among the players. I assume players can read :-)
Instead I'm talking about the pc. I think just about every rpg ever assumes the pc can read. While a universal literacy assumption is reasonable in a modern day/future setting, historical/fantasy rpgs also assume pc literacy. The data dump to the player by reading books is an old, old trope.
In the real world, literacy rates were low, even among the upper classes/elites of society. Scribes were a well paid profession in the real world for a reason. Old versions of the Dungeon Masters Guide only obliquely reference the literacy issue in their tables of wages for common professions when they listed wages for a scribe (scribes are among the better paid of the commoner professions).
In Baldur's Gate it's entirely reasonable the player can read, after all they did grow up in Candlekeep! In NWN1 the player is attending an hero school at the beginning of the game. It's reasonable that at least basic literacy would be taught to a would be hero, knowing which book on the evil wizard's shelf is the one that has his plans is a useful skill in the hero trade. In NWN2 Daeghun could reasonably teach the pc to read given his knowledge of the pc as carrying the shard, and there are bookshelves in the players house so there are certainly books around.
On the other hand fantasy worlds are full of barbarians, nomads, tribal groups and other such societies where learning is an oral process, possibly supplemented with pictures or pictographic representations. What about a pc from these groups? They can be highly intelligent, yet illiterate. Back to the example of the evil wizard's shelf, how does the nomad know which book to take? How do you give them information while in the dungeon, so often done with a reading data dump?