- using ‘[S] forbids [x]’ to mean [S] doesn't encourage [x] by default
- confusion of internal syntax and external meaning
- variance issues
- pretending the left of an implication is covariant
- pretending the index of a universal is covariant

imprisoned in the computer for being too beautiful. sideblog for smaller thoughts (on computers, math, weeb shit, and more). all original work here is released under CC0.