Okay something I just realized. I am about to destroy one of your favorite riddles. We are all familiar with the classic two doors, one leads to safety other to death, two guardians, one truthful, the other liar. Think about this is introduced in most movies or shows. In it, both guardians give whoever is answering the riddle the same information. But, if one lies, they can't tell the truth, they would not be able to tell you this. Therefore they either both tell the truth or are both liars, and saying one tells truth and the other lies is a lie, so they BOTH lie. You can't trust either.