cognitive psychology. PhD 
I used to be skeptical of Rust as a shading language because I felt the abstraction features were overkill, but then I read Unity's HLSL includes. That's a lot of... creative C preprocessor use.
You might be interested in Slang, which shows how Rustic generics/traits are useful for a zero-cost + modular representation of shader abstractions. https://dl.acm.org/doi/pdf/10.1145/3197517.3201380 …
(cc @TangentVector)
