How so? Anyone who sincerely asks a question wants the answer to be 100% correct, or the person answering to make it clear that they have a low confidence or don't really know. If the answer is false but stated with certainty, it is not only useless, it can even be worse than useless. There are other quality dimensions for answers, of course, such as the right level of detail and comprehensibility for the person asking, but these are all useless if the answer is false in the first place.