Comment by IshKebab

> Them claiming to have hand-written the code isn’t any better than them claiming to have thoroughly reviewed the code. We can’t know in either case.

It is better, because most people aren't out-right liars. If he said "I hand-wrote the code", sure it doesn't prove it, but I would believe him. When he says "I thoroughly reviewed the code"... yeah maybe. That's the sort of thing people do lie about (even to themselves).