most physicists seem to be in a compartment separate from engineers, but engineers use i all the time. signal processing, energy transformation systems, these all have use for the imaginary constant i = sqrt(-1) in that text you can see mention of a concept that i have been working on since about 2001 - spacetime expansion as a fundamental fabric, not some real/integer numbers only "aether" but something that is right there staring you in the face as soon as you realise that imaginary numbers have a place in physics, and completely eradicate the need for dark matter, dark energy and quantum physics. Einstein was very hostile to quantum physics. Lewis Carroll's book "Alice in Wonderland" is actually an allegory of the absurdity of quantum physics. What is correct about quantum physics is that you can do all of the math with integers if you add imaginary numbers. This is my personal pet subject, but i have to work on simpler stuff like distributed systems and nostr to earn a crust, but once i've built stuff that gets a community rolling, i'm going all in on the physics. If you have some grasp of even just the relativity formula described above, with the addition of the imaginary field, you will understand that this makes a lot of technologies possible that currently are relegated to science fiction or teh cult of aliens. It's literally the lack of imaginary part that stops us teleporting or communicating with zero time of travel. Imaginary is at least better than "irrational" but stil sounds like a perjorative. I think they should be called something like "information field" or something, because that is what they are.