@arfa brane --
What if it isn't talking about photons?
Photons are light, light is photons. Light is nothing but photons and photons are the smallest packets of light. To say anything else is simply incorrect, no matter how it's phrased.
What if it's talking about a phenomenon that has nothing to do with vision?
You're putting the cart before the horse here. Light has nothing to do with vision, it would be the way that it is even if no one were here to see it, vision is a phenomenon based on light. Light does far more than just allow us to see, the photon is the carrier particle for the electromagnetic force, but it's still just photons.
Again, if god is photons then the bible is false as are Christianity and Judaism. This is the only possible conclusion to such a premise.
About that empirical evidence, doctor-patient wise.
Oh you mean that red herring which has nothing to do with any of the topics at hand? Yeah, I'm not going to waste my time in indulging in this fallacy you seem so enamored with.
Can doctor detemine empirically if a patient is really experiencing pain, or just imagining pain? Would fMRI be able to detect this?
Theoretically yes it could if you introduced the proper controls. If you put the person under and stimulate the area where pain is supposed to originate the pain centers of the brain should light up. If they don't then the most parsimonious explanation would be that the patient was imagining it. But you don't even have to use an fMRI to do that, all you have to do is poke the area when the patient isn't paying attention(i.e. either distracted by the hot nurse or asleep), if they react then the pain is real, if they don't then it's not. Simple.
By the way, this bit was a fallacy called "moving the goalposts". I answered your original question in a satisfactory manner and you then changed the mark I had to meet(originally it was light, which I showed was possible, then you changed it to pain in the hopes that
that would stump me) in order to answer your question. This is not the tactic of a person who is winning an argument, it's the tactic of the man who knows he's got nothing but is desperate to win anyways.
Look, I know that you're trying to come up with some truly difficult, knock-down questions which you think I can't answer(perhaps I should nominate you for Potholer54's QQOQQ award), but the simple fact of the matter is that you don't know enough to keep up with me on this topic. I've kept up with the science, you haven't, it really is just that simple.
Sorry to burst your bubble, but I haven't even
started trying. Your arguments and your questions are child's play for me, I've seen them a hundred times before. You could at least try to come up with something new.