if Kevin really manages to be wrong about everything, you’d be able to get the right answer just by taking his conclusions and inverting them
That only works for true-or-false questions. In larger answer spaces, he’d need to be wrong in some specific way such that there exists some simple algorithm (the analogue of “inverting”) to compute the right answers from those wrong ones.
That only works for true-or-false questions. In larger answer spaces, he’d need to be wrong in some specific way such that there exists some simple algorithm (the analogue of “inverting”) to compute the right answers from those wrong ones.