What if we could give photons some mass? I was reading an article and these paragraphs got me wondering...

Before I list the replies, here is some background. The Higgs mechanism describes an invisible field that, it is argued, split one
  force into two soon after the birth of the universe. Specifically, it
  divided an ancient "electroweak" force into the electromagnetic and
  weak forces we see at work today. The latter is seen in some
  radioactive decay processes, and is involved in creating sunshine.
The Higgs field splits the electroweak force by giving mass to the
  particles that carry the weak force (the W & Z bosons) and leaving the
  particle that carries the electromagnetic force (the photon) massless.
  The Higgs boson is the quantum particle associated with the Higgs
  field.

What I'm wondering is... can anyone hazard a guess as to the possibility at some point in the future of humans being able to manipulate the Higgs mechanism so as to give photons some kind of mass? I'm thinking they obviously couldn't go at the speed of light anymore, so could we make 'slow light'?
 A: It would be a neat idea, but as far as current (or foreseeable future) physics is concerned, it's pretty much flat-out impossible.
Basically, the Higgs mechanism works on a very fundamental level. If we are ever to be able to manipulate it, it will have to turn out that the Higgs mechanism (and the standard model as a whole) is not a fundamental theory, but just a consequence of some even more fundamental theory, which we will then have to discover and understand. The thing is, in general, "more fundamental" theories tend to involve processes that happen at progressively higher and higher energies, which makes them very hard to even observe, much less control. If you think about it, we needed a major international collaboration (the LHC) to simply see any nontrivial consequence of the Higgs mechanism. How much more complicated and expensive would it be to get access to whatever theory may underlie the standard model? I doubt that is something we can expect to see any time soon.
A: We already can do this in materials--- it is called "superconductivity". The phenomenon for photons was understood before the phenomenon in the weak interactions, and the description of superconductivity by Landau, and the Bardeen Cooper Schriefer model for fermionic paired condensates, was the inspiration for Nambu's fermion vacuum condensate idea, and Brout and Englert's later point-particle superconducting Higgs mechanism.
Photons do not go slower in a superconductor, they do not go at all. Superconductors don't have photon excitations at all, and if you have an electric and magnetic field in the superconductor trying to propagate, the fields decay away exponentially.
It is certain that we won't be able to do this in vacuum, because we know all the fields around us are stable. In order to make an instability in the field, we have to alter the fundamental constants in such a way that a charged field makes a superconducting condensate. In order to alter the constants, we would need a certain energy density per unit volume which is going to be practically infinite for the purposes of engineering.
But the condensed matter analog, the superconductor, is a perfect analog, and we understand the dynamics of what would happen in this situation simply by examining what happens in a superconductor, and extrapolating to the situation where the material doesn't break Einstein's relativity invariance with respect to constant motion.
A: I am not completely sure, but if photon had mass, $W^+$ and $W^-$ bosons would have different masses which is impossible for a particle and antiparticle.
If I am wrong please correct me.
