Jim murphy asks whether the order of moments in time is necessarily fundamental. I imagine the universe existing as a mathematical set of possible states, and time emerges from the fact that some states contain references to other states. For example, my brain right now contains memories of a brain a few seconds ago. This seems similar to your ation for our perception of the flow of time. But your explanation still assumes a block universe, rather than a collection of unconnected moments. Could all moments of time exist independently, without reference to moments before and after? i'm just not sure what it would mean if there are an infinite number of them,. which i think there probably are, but we don't