@Emrakul, no. I do not have any "evidence".:) Therefore I ask "Is it correct?", so people can tell "Yes, I do it". If nobody tells this the other part of the question can be answer as hypothetical - "If it is true, is there a good reason for this?"
(Quoting a comment by the OP)
Yes, I do this.
An example would be Suicide Mystery (since deleted):
Someone either jumped or fell to their death from a multistory buidling. The detective in charge went into each room facing the dead body and looked out of the window. After having done this, it was ruled a suicide. Why?
He found an unlocked window.
Note that the answer was accepted as being the correct answer, which probably means it was the answer the OP had in mind when asking the question.
I find the accepted answer a bad answer (finding an opened window still doesn't rule out murder, or an accident)†, but I can't fault the answerer for that, since it was the answer the OP wanted. So I don't punish the answerer, but I do punish the OP for asking a bad question.
†: There's a better answer possible and there's also a better alternative question — finding a window locked from the outside (as far as that's possible) and ruling it a suicide, or only finding locked windows and ruling it a homicide.
This stack is unique in a way, as it's the only stack where questions are asked where the OP knows the answer, but does not give it as they want others to figure it out. Usually, when the OP knows the answer, they self-answer to spread knowledge. On CodeGolf, challenges are issued, but usually there is no single correct answer that the OP already has. This stack is unique in that respect.
I consider the answer a part of the question. But the answer isn't given by the OP, it is revealed by accepting an answer (or commenting on answers that they're in the right direction). So I'm only able to vote on questions like these after learning the full question through the answers.