There is a saying that "
the only constant is change".
This is often attributed to
Heraclitus of Ephesus (Ancient Greek philosopher) (from Plato) as "
everything changes and nothing remains stil,2l; and you cannot step twice into the same stream."Saying:
No man ever steps in the same river twice, for it's not the same river and he's not the same man.
When, exactly, are two things "
equal"?
Example paradox: ship of Theseus
What about digital copies? What about military units and soldiers, naval ships and crews, sports teams and players, etc.?