[LittleTimothy]

Oh it's a totally different issue on the quantum side that leads to the same issue with difficulty verifying. There, the algorithms that Google for example is using today, aren't like prime factorization, they're not easy to directly verify with traditional computers, so as far as I'm aware they kind of check the result for a suitably small run, and then do the performance metrics on a large run that they hope gave a correct answer but aren't able to directly verify.