I have had a series of ideas, all buiding on each other, for some time. It was in the pursuit of defining the dual nature of light as exhibited in the two-slit experiment, that I came upon the conclusion that light (photon) is not a particle. My thoughts lie much more along the lines that only waves exist in the transfer of energy. Real physical particles, like stars, planets and people do have real mass. This is in my mind not just an alternative interpretation. It is real. However, the transfer of energy requires an inherent imbalance somewhere along the line. The flow of energy is always to the end of achieving equilibrium. I believe that matter behaves, in all aspects, as if hit by mass when a "photon" impacts it. But I believe that is a product of our limitations in sensing anything of a qauntum nature. If we could see a wave, impacting us head-on, because of the relativistic effects of an object coming at us at the speed of light, it would be indistinguishable from a particle. To see it in any direction other than precicely it`s point of origin would be impossible. When an object is hit by a light wave, there is no way to tell it apart from a photon impact. I am thinking along the lines of the now-speculated "Higgs" particles as playing a role in "torquing" energy from a wave into the quantum field of the electron cloud in an atom. Enough "torquing", or "pumping" of energy into this cloud and the electron jumps. There`s more I`m in the process of reconciling in my mind. I think I may have something of a lead on unifying a few theories. More later. Kev.