Re: Creates more problems than it solves?
"the probability that Einstein had it all figured it is....well...vanishingly small. We're just waiting for the next step."
The probability that he had it all figured out is precisely zero. Many more advances in cosmology and quantum physics have been made since his days. But of course, many widely studied theories are still untested and therefore not accepted a\s fact. The idea of a different speed of light at the birth of the universe as an alternative to the theory of rapid inflation to explain what we observe in the cosmic microwave background radiation is an interesting one. If it could be proved or disproved by the proposed experiment then that would be a great step in the progress of physics. But it wouldn't invalidate general relativity, my guess is that it would mean that the cosmological constant may not have been constant after all. I for one hope that we'll see an answer to this soon(ish).