How is a thought a photon?
"Could" be a photon(s) or any other virtual particle. Thoughts pop/manifest in and out of existence just as a photon and/or virtual particles do. The thought(information/instruction) is in the light. Light that thinks. Light that contains quanta of information/instruction. Just as knowledge isn't stored in the brain. It's stored in light. Knowledge itself is light.
Light thinks by bending, refracting, reflecting, vibrating, and all sorts of ways. (This is the action/motion.) A thought and thinking would be different. The more thinking, the more forced action/motion. When the mind is stilled and no thoughts are taken, it is at more of a rest state. But is the mind at a rest state or is it the waves of energy and/or particles at a rest state?
Wave-particle. It's not the particle that thinks, it's the wave. But particles have mass so a photon would be just "wave." Researchers have observed that a single photon is not wave-particle. It is just wave. That the wave-particle duality of the photon is misleading. It's more like "wave-unity" rather than "wave-particle duality."
Last time we went over this, I had asked that if a thought isn't a very complex interaction of energy and/or particle... what else could it be? Your answer was "consciousness."
Perhaps pure thoughts are photon's whereas all sorts of other thoughts are a variety of other virtual particles and energies. The photon being pure energy.
If the thought of punching someone came into my mind, it would not be a "pure" thought.