Waveguides Are Just a Flat Plane, Right?

Hollow lens has been aroundikwith its whacky wave guides, with an l c d like, ok, get better at the manufacturing process. My understanding is these things are constrained by size and battery and like thermo dynamics more than anything,. There's a reason magically raised two billion dollars. It's because they had people look into a thing called the beast that was the size of a closet. And what what he meant was there going to send light into your eyes in a way that mimics reality - not just an amissive, flat plane.