Do we need quantum time, Big Bang, etc.?
"Quantum time is reversible and so past and future are equally probable. What sets quantum time's arrow is not clear since a quantum clock ticks equally in both directions."
I tend to distrust any belief that orients itself on pattern of human experience like "conscious", "made", designed", "created", or "purpose". Accordingly I don't expect progress from someone who is thinking in terms of a model like quantum physics.
It was Weyl who admitted that there is at the time being (1932?) no explanation for the symmetry of time (in QM). Schulman even suspected a hypothetical border between the micro world and the macroscopic one. Did really nobody admit that a model is fundamentally different from reality? Who dealt with even more obvious mistakes of the fathers of QM?
To me, reality is the conjecture of something that is not just subjective but entirely independent from any observer. Being aware of coherence length, I like Steve Agnew's argument:
"how can time decay in time?"
The most appealing to me notion of time is something that doesn't decay in time.
Any spin is at best an approximate measure of the reality called time.
Eckard Blumschein