This link may be of some help. :-)
http://math.ucr.edu/home/baez/RelWWW/wrong.html
and here:
http://math.ucr.edu/home/baez/RelWWW/wrong.html#speed
Sorry for not taking more time this morning, but I will be terribly busy today. Sigh!
Aw Man! I can't believe I read that entire paper and believed it! Crap! I am now officially pissed off!
Thank you RadioAstronomer for pointing out the crank.
Your links are most enlightening.
I know, being a electrician and working with magnetic fields that they are certainly not instantaneous. In fact we can see the field collapse and expand and see it propagate.
I don't think we have this visibility into gravity however.
It could be our math. Not being well versed in mathematics, I cannot say for sure, but we seem lacking in gravitational math that transcends and fits well with other math disciplines.
I really don't know what gravity is, exactly. And I don't think we can explain it with "dark matter", "Aether, or whatever, which breeds these off the wall theories.
I do believe that when we do....it will mean a huge change in possibilities for interstellar travel. At present we are only playing with the effects of gravity and seem to have a good handle on that.
But we are like infants play in the tub with our rubber ducky's at present.IMHO.:-)