Why I do not consider the metaphysical immaterial

[anagogy]

Because it is all in the UV light spectrum. Without this sight, this ability to see this light, we are convinced that this light is beyond us. Little of it is such. In fact, if only we used our instrumentation in such a way, it would all be visible. That is why I do not consider the metaphysical something truly paranormal. To me it is a fringe science that is not yet discovered. This is not truly an illusion but simply a heavily abstracted reality.

I have a slightly different understanding.

The upper frequencies of the electromagnetic spectrum are still very much space/time, or physical, phenomena in my opinion. There is a time/space component of what we call "electromagnetism" which is, in fact, "immaterial" though. Anything perceivable via the physical senses, or physical instrumentation, is physical. The metaphysical part of things is the non-local "mind" aspect, which is not only intangible, and nonphysical, but not accurately quantifiable by any physical means. However, physical manifestations reflect this aspect to varying degrees, depending on where or how the energy is being focused.