That's an interesting idea, and I've been playing with the idea of a reality we are incapable of sensing since I took my first mushroom dose. It came out at the time as something like "What if music is.........what if music is like...the sound waves, you know? What if they like are actually a like a solid, defined medium to other beings, who are made out of sound, and like they....like...live in a world of sound, ya know?". Forgot about the idea after the trip until a DXM trip after, where while floating through space the idea reemerged. It made perfect sense that the senses of my flesh bag (it's not my body on DXM, merely a suit that I pilot) were not all-sensing, that there could be other types of waves or matter making up entire other universes that may inhabit the same space as our own on a different wavelength or something. The idea of multiple dimensions doesn't have to be something separated by a barrier of time and space or something like that, but merely matter we are incapable of sensing. Hell, we may even be multidimensional beings ourselves, have extensions or perhaps entire bodies in the other dimensions. Maybe the human body acts as an organ of multidimensional creatures, and we don't realize it? There is so much we'll never know, and I kind of enjoy that I won't live long enough to see it all be understood, because speculating about the mysteries of the universe is really fun, and I could do it for days.