Okay, I was reading another post on PF about the expansion of time and most of the detractors stated things like "time equals itself" so there can be no "expansion" of time. The proponents tended to say things like "if space can expand and we can relate the expansion of space to time, why can't time expand and we relate the expansion of time to space?" I sort of agree with the second point, at least to the extent that I have grossly generalized it. My question about the expansion of time is slightly different though. Doesn't the concept of expanding time dovetail nicely with the whole 'arrow of time' concept? While theoretically possible to move forward and backward in time, empirical evidence shows us that we cannot move backward in time. If time is expanding right along with space though, it makes perfect sense that we cannot move 'backward' in time, right? Because time has 'expanded' past the point at which you dropped your coffee or were dumped by your girlfriend. Time follows the arrow of time because it is expanding right along with space, in all directions, all the time.