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S16g. Physics and experience
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On superficial reasoning, time is only a concept that helps us 
to order our experiences. Thus,
''experience exists; time does not''.

By exactly the same, argument,
''experience exists; space does not''
''experience exists; mass does not''
''experience exists; charge does not''
''experience exists; gravitation does not''
etc. 

Physics is exactly about the concepts that are substituted for
experience to make experience quantitatively predictable.

Therefore, in this deeper sense, time, space, mass, charge, 
gravitation, etc. exist, and are more fundamental than experience.