To me the science (in the sense you are speaking of) strictly means the study of cause and effect. In this case the cause being the mushrooms and the visuals are the effect. Sure science maybe can't explain WHY you see that stuff and maybe it could, psychology is a science too. They can tell you how, and that is just half of understanding. To me the psychedelic is almost purely scientific in a spiritual sense. The best way for me to get meaning out of a trip is to almost approach it from an almost pragmatic standpoint. This to me is science, the cause is the trip and the effect is what I make out of it.

You cannot deny the existence of the physical world, it holds many meanings. Even if you might not like what it has to say. Measuring your blood chemistry and sticking you in a MRI scanner might actually help you understand your trip better if you are aware of what happening to your body. See if certain physical reactions correspond with moments in your trip.

I can see where you are coming from, but I do not think science should be so easily blown off in the face of spiritual and psychedelic experiences.