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Obviously. It's never suggested as an in character mechanic. Neither is picking up a d20.
Right. What I don't understand about this entire discussion is the sort of hidden assumption that "The DM rolling a die to look up something on a loot table" is somehow less metagamey than the player and the DM collaborating to come up with a plausible continuation to the story they are collaborating on. In other words, I agree that 4e uses a different method to resolve questions like this, but I don't accept the idea that it's somehow morally impure / less RPG-ish than any other system that has been used since 1e.