Problem scenario
Your gym has hexagonal plates. When you deadlift the weight rocks in unpredictable ways when you put it down. Deadlifts necessarily require you to pick up the weight from the floor (supported only by the ground, hence the term "dead"). It could hurt you if you place the weight down and the bar moves toward your shins. How do you deadlift with hexagonal plates?
Solution
Buy HexBumper plastic adapters for every 45 pound weight you use.