I see.

But what about things like explosions, the force of an explosion, which affect matter but are not really matter in themselves? Is that sound at work or heat or something else?

And what about God who can harness the wind and whose anger is like a mighty explosion, who decides what lives and what dies, are the things he does imaginary just because we cannot observe them with our eyes from here?

And what about life, the energy that is life, which occupies this space and gives breath to a physical body, yet altogether is immaterial in itself? How is it on one day you feel zapped and lifeless and on another you feel brand new and ready to take on the world, yet your physical body has not changed an iota in the meantime?

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Light & sound, regardless of wavelength still operate 3 dimensionally.

as far as we can tell anyway.