This is why statistics get people in trouble (and are only really useful for quantum physics and propaganda). He is measuring his certainty, you're measuring od

This is why statistics get people in trouble (and are only really useful for quantum physics and propaganda). He is measuring his certainty, you're measuring odds of interference, on top of which both are conjecture. Regardless I am quite sure that he is far better 'equipped' to decide his own certainty, just as you are yours.