How do we handle questions based on incorrect premise?
E.g. questions asks "Why did X happen in work Y", when in fact X never happened in work Y.
Specific example is Where did Doc Brown get plutonium from?
While I can fully get on board with the notion that such a question is not a GREAT question, I don't see it as a BAD question merely because its premise is wrong (in this case, since Doc Brown didn't steal it, terrorists did, as the answer pointed out).
Please note that the example-specific issue of "that question is bad because it may be General Reference" is OUTSIDE the scope of this discussion - pretend that there is no Wikipedia page clearly outlining the plot of BTTF.