On Thursday, July 17, 2014 3:45:38 PM UTC-7, Double-A wrote:

Every other particle has mass, so why not the photon. I came to that conclusion after reading Feynman's book on QED. As far as quantum properties are concerned, there is nothing special about the photon. Only a matter of degree.

Double-A

That's very sensible. After all, something has to be making up the mass of an electron. I like the interpretations by mpc755, as to everything (including photons) displacing aether.