manfermef, in his second posting, Johnny Boy is again playing his usual role in this forum, i.e. to write about his personal theories.

Joohnny Boy somehow deduced that the photon must be massless, but he didn't use any of the photon's properties in his reasoning. So, his argument must be wrong, because you could replace ''photon'' by any other particle in his argument and then you would have to conclude that all particles are massless.

The Z-boson is a particle that is very similar to the photon. But it is very massive. Special relativity just states that theories must be symmetrical under so-called Lorentz transformation. A massive photon would not violate special relativity at all.