I read that article, and I have absolutely no idea if they are just talking so far over my head that I feel stupid, or they have no fucking idea what they are saying either. Normally I'd lean toward my stupidity, and that is still likely the case, but man, I honestly didn't catch even one iota of evidence that anything they did relates to why time appears to move only forward for us. I'm sure it is buried in the actual paper itself, but it almost sounded like trying to prove that 1+1=2 by analyzing the smell of my farts. Seems completely unrelated, at least to an idiot like myself.