[Profpat]

I agree Allen does have a good "point". I have entertained the thought that a string is a highly enenergetic very,very small vortex.

Every massive entity has a center point of gravity, but this is a conceptual point. I can't imagine an electron or photon itself being a dimensionless point particle and existing in our reality. It's OK for physicist to discuss it as a point particle conceptually, but not really. There I believe for it to actually exist it has to have at least ONE dimension.

More on this subject later.

Best to all,

Pat