Sean Carrol tries to explain this here, at about 30 minutes in:????
Great bubblegum for the brain there.? I think he is saying position is a special limit that produces our classical interpretation of reality. Maybe reality is where the limit takes us into a linear region of the solution space, very much like the way LTspice linearizes our circuits to solve the differentials
Just keeping on topic here.? :-)
Tim
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Tim Hutcheson