hi. so if a photon doesnt have a mass why can you attract it with gravity as in the case of gravity lensing. does some quality of the photon allows it not to be affected by the higgs field and therefore has no mass and travel at the speed of light.? and having said that. in degenerate matter light slows down, would you say that since superluminal travel requires no mass, if you slowed down light the photon would gain mass and interect with the higgs field. or would you say that the higgs field and electromag field are at right angles in a vector sence and never interact.... or both and the universe freaks out and turns off the higgs field.. just joking??