I've had a suspicion for awhile that quantum computers are empty boxes (read: scams) that appear to yield eerily slightly higher than 50% accurate results as long as they're observed by someone who wants to see accuracy and the results are post-processed by a machine that requires far more power and time. I know the conundrum is how to verify results without actually using the extreme error-checking to classically verify them, but, not as a philosophical question, but as a physical one: Isn't any error-checking you do after a quantum calculation dependent on the wave collapse when you observe that empty box, and therefore subject to your own observation? Is there any reason at all to believe that such a thing is more accurate than the expectations of the majority of people observing it?