imho, There can be no question that the universe , we, as latecomers in it, has moved from the Big Beginning through time to the now, and is progressing into the empty future. In such movement there is no observed interruption, ratcheting; so how can we experience the zero length, duration "now" moment, the fleeting presence? ( the lag of our nerves of course) but how about inanimate objects? picture please, all objects with spin, from quarks, to rotating galaxies as in a cycloid motion, always touching with zero velocity, but progressing in their movement through time into the future. Photons as in a rotating wave, that does not age, former matter stuck in time, in a deep gravity well BH. a model that fits some situations, but raises questions.