Exception
"There was ONE exception, a guy who could tell what is what above statistical error: he was deaf on one ear and his hearing on the other ear was severely limited (due to an explosion, IIRC)"
That would make some sense. ISTR that MP3 considered what to leave out by how our ears and brains process sounds. Someone whose physiology is substantially different would violate some of the assumptions about what can be left out of the audio.
Biting the hand that feeds IT
