I saw a blog post about Godot adding OpenSimplex noise generation so users can do procedural generation. I thought I should add noise to Chickadee so I began reading the third-party C lib Godot includes and found the following comment:
"Gradients for 4D. They approximate the directions to the vertices of a disprismatotesseractihexadecachoron from the center, skewed so that the tetrahedral and cubic facets can be inscribed inside spheres of the same radius."
guess I'm not gonna do that.