Your CAD Software Is a Bug Factory. Functional Programming Fixes That.
Traditional CAD software runs on mutable state — the same paradigm that gave us null pointer exceptions. Every broken reference, every collapsed feature tree, every unreproducible model traces back to that root cause. A new Haskell-based CAD environment compiled to WASM and running in the browser proves that functional purity can eliminate entire classes of design bugs, making geometry logical rather than just visual.