The tribunal uses the test of "what would a reasonable player do" in a particular situation, eg. the way the player executes the tackle. But they are lawyers, not former players, so they don't grasp what's in the mind of the tackler or his role in the game. I applaud the banning of the dangerous sling tackle but if we are going to avoid accidental head impact in tackles then the knee up going for a high mark will be the next feature of our game to be looked at. Raising the knee is a natural part of jumping off the ground to get more height but the lawyers could say "a reasonable player would know that putting your knee up may impact the head of the player in front of you". That's clearly not what we want the Tribunal to say, so where does it end?