It seems crazy to me to not filter the order through a "reasonableness check", and if it fails that, a human is brought into the transaction.

When I was at Caltech, institute policy was that if you solved an exam problem, and came up with not just a wrong answer but an absurd answer, you would get negative credit rather than a zero.

The way to get just a zero is to annotate with "I know the answer is absurd, but I cannot find the mistake".