Some theories are more falsifiable than others. The theory that there was fraud on a scale large enough to swing this election should be falsifiable in any sane, working electoral system. In parts of the US, however, I'm less confident, since in some cases it doesn't seem possible to disprove the theory that an individual vote was fraudulent. Hence the problem: anyone saying it's impossible is just as deluded as the person saying the election was stolen. The system is broken.