Originally Posted By: Finiter
I would ask you the reverse question: Why do you perceive that there should be energy transfer just because a force exists?


Force is, simply, a name we give to a transfer of energy. Without energy, of some kind, there could be no force.

Quote:
What happens when gravitational force exists between earth and moon?


This is probably the point at which a physicist would say "...but gravity is not a force." I'm not a physicist, so I'm inclined to regard this as a bit of a cop-out.

as far as the graviton is concerned; it is still only hypothetical.

There never was nothing.