Quadrays and Synergetics: More Background (School of Tomorrow)

Given the recent spate of interest in Quadrays, lets talk more about how they might be used.

https://groups.io/g/synergeo/message/2387 (IVM 4D -- XYZ 3D)
https://www.youtube.com/watch?v=LKcYqMY234I (John Baez talk)