I already know that I don't understand this. I think I had about 5 lectures on special relativity, by a physicist who probably didn't understand the maths either
I was recently told off by a mathematician for talking about negative entropy because there's no such thing. I used negative time as my counter-argument. No-one is going to tell me that yesterday isn't 'today - 1 day'.
I very much accept that time is one-way but I'm unconvinced by the lack of evidence that it's linear. I thought I was on shaky ground but I recently heard Prof. Brian Cox say that time is one of the least understood things in physics.
Learning about Clojure's immutability, I played with the idea that time is a consequence of state change in the universe (or multiverse.) If you consider the multiverse as all things that might happen in the future of this universe, rather than that all things do happen in multiple universes, then the present is a wave of 'decisions', wiping out future possibilities. Even if it isn't true, it fits nicely with Agile theory: make decisions as late as possible to keep more of the future alive.