Change is not identical to time. Time is a mathematical structure invented to categorize change.
Is time analog or digital?
“Time is a mathematical structure invented to categorize change.”
I’ll agree that the language, terms, units and tools we use to measure time are mathematical structures invented to categorize change.
We started out by dividing known astronomical cycles of change into units of time. Earth’s orbit around the sun, earth’s rotation (the sun’s position in the sky).
Then we refined these units by inventing machines that measured time (change) in smaller increments - hourglasses, mechanical clocks, electrical clocks, digital clocks.
Note that in all of these, something is changing: the sand is flowing into the lower chamber, the spring is unwinding, gears are turning - even in the electric and digital clocks there is change - electrical pulses throw micro switches to advance the seconds, minutes and hours being displayed.
But time itself is not a man-made mathematical structure - only the tools and language we have invented to measure it.