I once had a conversation with a coach (not in a gym setting) where we were discussing basketball and I mentionned adv/disadv. He interrupted me and said that was part of the trouble with officials is that we took concepts like A/D that were not in the rulebook and applied them to game situations. I told him that A/D is actually in the rulebook and that it is our job to use it as a way of determing incidental versus illegal. He did not believe me. I had to show him the rulebook before he believed me. This was a long time coach who had been under the impression that A/D was an invention of officials.
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