Twowolves said:
No, it's not literature, it was once based upon literature. Now it's based on Gauntlet and Diablo.
Ah, yes. The imaginary past.
Whether or not D&D made claims to be based on fantasy literature, it has never modeled that literature well from Day One, with the possible exception of Vance's stories (and even then, Vance's casters aren't exactly like D&D wizards). Look at how much adaptation was needed to make D&D work with the Hyboria or Lankhmar settings (starting with the 1e modules), despite the fact that those settings are presumably part of its inspiration.
If anything, thanks to the OGL, d20 (if not D&D) is being used to increasingly model S&S and high fantasy much better than previous versions of D&D. The Black Company and Conan magic systems are excellent reflections of their inspirations, and the BCCS system (or Elements of Magic) works pretty well for a Lord of the Rings or Earthsea setting (where magic is physically taxing and must be used with great restraint) as well.
If anything, I'd argue that the warlock, reserve feats, and similar mechanics adhere MORE to classic fantasy paradigms than do the fire-and-forget spell memorization/preparation system. Did Thoth-Amon sit down with the Book of Skelos for an hour every morning getting his demon-summoning rituals imprinted on his mind? Do Gandalf or Galadriel even
have spellbooks? Hard to imagine the Lady of Light even being forced to rest eight hours to prepare or restore her powers. OTOH, the ability to exercise a narrow range of powers in a fashion that isn't about a per day mechanic is common to fictional wizards from Morgan Le Fay to Doctor Strange.