Do you believe in god or math?

[Autumnlicious]

Last point first. I should have said energy or mass. But there is no experiment we can yet devise that can prove this. If we could create in the lab (an exotic type of machine,)
the conditions of absolute zero, the photon would be at rest, and we could see if it has mass. We remain in limbo.
Big problems testing this here: http://math.ucr.edu/home/baez/physics/Pa..._mass.html

Had you read your own link:
"If the rest mass of the photon were non-zero, the theory of quantum electrodynamics would be "in trouble" primarily through loss of gauge invariance, which would make it non-renormalisable; also, charge conservation would no longer be absolutely guaranteed, as it is if photons have zero rest mass."

Congratulations, you just broke E/M, general relativity and violated gauge invariance.

Last one's a killer though.

How do you plan to not violate gauge invariance while maintaining that light has mass? Or would you hold that the laws of physics are not uniform?


For others:
What is Gauge Invariance?
http://www.vttoth.com/gauge.htm