Professor Josephson,
You present two essential and complementary, but oppositional concepts, with meaning and circularity, given that meaning is goal oriented and thus linear.
Linearity is temporal and circularity is thermodynamic.
I think our big problem with understanding time is that since thought functions as flashes of perception, we experience time as the present "flowing" from past to future. Which physics codifies as measures of duration between such events. Yet the underlaying reality is that it is change turning future to past. As in tomorrow becomes yesterday because the earth turns.
This makes time an effect of action, just like temperature. We could use ideal gas laws to correlate measures of temperature and volume, like C is used to correlate distance and duration.
Our linear, rational, left hemisphere of the brain is temporal, while our right, emotional hemisphere is thermodynamic. It is not so much our goals that motivate us, as that we are goal driven.
The block time, eternalist view has trouble explaining why time is asymmetric and defers to entropy, but as a measure of action, time is asymmetric because action is inertial. The earth turns one direction, not both.
Different clocks can run at different rates because they are separate actions. A faster clock will use energy quicker, like an animal with high metabolism will age faster than one with a slower rate. Yet remain in the same present.
One might view reality as a dichotomy of energy and form. As energy is "conserved" and dynamic, it is always and only present, but constantly changing form. Thus creating the effect of time.
As organisms, we evolved a central nervous system to process form/information and the digestive, respiratory and circulatory systems to process energy. Hence our tendency to try distilling energy down to its most minute amounts, but in doing so, find other parameters become blurry. Even a moving car doesn't have an exact location.
As to the existence of consciousness, the logical fallacy of our current spiritual theory, monotheism, is that a spiritual absolute would necessarily be the essence of sentence, from which biology rises, not an ideal form from which it fell. Religion though, is more about social order, than spiritual insight, so it is better built around wisdom, than raw consciousness. The wise old man, rather then the new born babe. Consciousness then acts like an energy, always and only present, as the forms it manifests come and go.
Regards,
John Merryman