Whoever has undergone a medical examination for disability knows what a hassle it is, how much time and nerves it requires. (Whoever doesn’t know, let him ask those who know). And when you waste time and nerves, and the result is negative (i.e., time and nerves were wasted), of course, you want to come up with a non-standard way to still pass it... Or - use a hint, even a dubious one. Yes, even if it’s a shaman.