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We have had grey areas in the game for as long as we have had the game. This isn't cricket, where the ball either hit the bat or it didn't, or it was going on to hit the stumps or it wasn't. It's football, which is dynamic, evolving, and complex to adjudicate. I don't think the AFL needs to eliminate all grey area, just work on the 99% of cases.The problem i see is that as soon as there is any grey area, it can be contested and thats what the afl will eventually need to eliminate. The o ly way to eliminate any argument about whether a player is at fault, is to remove the grey area to a simple yes/no equation.