Hi,
I was most interested in this doco because it looked likely to address the question: what is the basic nature of time?
We can think about minutes and seconds and so forth, which are just a convenient division of the time (the passage of "something") from sunrise to sunset, but all that is just a label related to how we think. I mean, we can count, and we want to count, and get very clever at it.
A "day" isn't even constant from place to place on earth, or within our own solar system, so there is a remaining question.... what is the cause?
If time (whatever it is) could be frozen, what would we see? Probably nothing, because we would not be functioning. No nerve impulses etc, no heartbeat. But what would be observable? ......no changes of any kind.
So is time really just change (and decay, if we are right about entropy increasing)? If change accelerates, should we say that time has altered? Of course we believe space and time are possibly a continuum, so the perceived changes ought to work the other way.
I lose the plot about there, and wanted to hear more about Planck Time. The doco did refer to the possibility that time is granular, and so, is it built from billions of Planck grains?
I must look into this more in the time I have left
Cheers