16 Jan '17 04:30>4 edits
Originally posted by sonhouseI'm sure he knows time flow is variable. His point however seems to be our concept of 'time' (how we understand it) comes from the observation and understanding* of 'change'... or we could call it motion, same difference.
You do know, I hope, that time flow is a variable, first depending on how deep you are into a gravity well and second how much velocity you have relative to other objects so if you manage to go say at 99% of c, and you journey 7 light years away, only one year passes in your spacecraft but 7 years goes by on Earth. That is a fact.
Basically flow of 'time' means positions are never static, and this is true whether we're looking at objects such as asteroids or considering the motion of (what appears to be) a motionless rock at the atomic level.
( Robert Heinlein, Stranger in a Strange Land )