Three Dollar Quill

I got distracted working on other stuff, but I did do some stuff with the 4D worldbuilding just now. I think I'm good with basic energy-momentum stuff, and now I need to take a look at waves, which is going to be interesting, because I haven't yet found an easily digestible explanation of what it means for Huygens' principle not to apply in an even number of spatial dimensions. I'm sure this will have numerous consequences, I'm just not sure what they are yet. Hopefully I'll be able to explain them once I understand for myself. Anyway, that's not happening right now.

Good night.