Johann,
You offer some interesting philosophical notes on time. Philosophy is not my long suit, so I look at it as interesting -- unless it is grossly false, such as what the evolutionists come up with.
About the human condition: I believe that time allows us to organize our lives. What would life be like if we could take off for the some distant planet and come back yesterday, last week, etc. Would we then have to live that day, week, etc over again? Or could we then modify our interactions with others? Thus history would be a fluid thing -- being constantly modified.
Material existence, living on this earth, and the laws of gravity and physics help us to organize and keep our things in place. It gives us a work to do. These physical realities are what we see as a "real existence." Will living in the New Earth be a real existence? I believe that the picture we get from the Bible is that we do live real lives. If Eden will be restored, we will have trees, vines, houses, real food, etc. I believe that God "loves material," He made so much of it!
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Hubert F. Sturges