Zoe expounded: "No, we shouldn't. That's why Wikipedia is a collaborative effort. Others with more knowledge can add what they know, which we do not. It's not a user's responsibility to cover all material if they don't know it."
This seems to make sense. But examining it logically - ironically, (irologically) this tends to mean that WP becomes a repository of what people do *not know, rather than what they do. -Steve :)