Quote:
Originally Posted by sjastro
The question as to why mass bends space-time is totally meaningless if
you notice that (3) and (4) are the same statements. This is the equivalence principle of GR at work.
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Hi Steven;
Great to have you 'back on the job' !
This is interesting for me.
I get that the question is not relevant in GR, however, when one attempts to ponder gravity from a quantum perspective, gravitons seem to appear. I think most would also be aware that attempting to incorporate gravity into the quantum world, then results in all of those famous problems which ultimately results in Grand Unification Theories (GUTs).
I find it fascinating that the various theories beyond GR, have been framed around attempting to address these problems in such a way as to explain everything from the quantum level up to, and including the bigger things more influenced by gravity. Field theories seem to also fall into a similar category. (I'm not quite not sure about this, yet).
I wonder about the influences this approach might have in shaping the initial foundations of the GUTs. It seems that there may well be artefacts lurking in these theories, originating from their initial premises.
I guess this is more a philosophical issue about the science theory creation process, as opposed to a technical one.
Interesting.
Cheers