> If you merely take a disordered system and throw it into reverse, you will still just see a disordered system becoming more disordered, because there was nev

> If you merely take a disordered system and throw it into reverse, you will still just see a disordered system becoming more disordered, because there was never any surprising ordered state built in to be uncovered later. This is circular. If the system is becoming more disordered, it follows that playing it in reverse will make it less disordered. Sure, if the initial state wasn't very ordered to begin with, this won't look very different, but that's entirely irrelevant: as long as we accept that "disorder" is a measurable objective property of a system, then there is a quantifiable difference between moving forward and backward in time. And this doesn't match either a deterministic time-reversal symmetric theory like classical mechanics, nor a deterministic CPT-reversal symmetric theory like QFT.