If nothing changes, does it happen in time?
The concept of change effectively defines what is meant by identity. More specifically, for something to have a distinct identity it must exhibit resistance to change.
For example, pick up and try biting a rock. What you immediately discover is that it likes being what it is, and isn’t terribly interested in changing either its position or size. Yet, over time, it will inevitably do both…when it comes into direct contact with another, equally resistant identity. Of course if it is floating in space, unless it strikes another rock it will likely retain its unique ‘state of being’ for a very long time. But if it resides at the bottom of a stream, or the edge of a river, it will inevitably be reduced over time to bits of sand, and then be further reduced to smaller particles (e.g., molecules) which will eventually dissolve and become part of the surrounding water. So…first rock, then water.*
And thus it is ‘change’ (in terms of ‘identity’) that defines time. So…slow change, slow time. Fast change, fast time. No change, no time. (If you wonder about the difference between fast and slow time, in terms of change…imagine being an electron in the middle of a nuclear explosion. Then imagine that same electron residing deep in an iceberg. ;-)
*Which then eventually evaporates and separates into air and sand…and may again become a rock, given enough time. (But that’s another story.)
Quiz: If you take a picture of a rock, develop and frame it, then hang it on your wall…will the photo of that rock never change? Or is it now an ‘identity’ (independent of the rock it depicts) who’s time has just begun…changing, as it slowly fades away in the light of day?