Make invalid states unrepresentable

Some programming languages have really powerful type systems, so we're really leaving money on the table if we don't take full advantage of them. In the case of Rust, I believe the type system has been shown to even be Turing-complete! (That's not an injunction to implement everything at compile-time.)

I know, for myself, coming from a JavaScript background, strict type systems seemed... restrictive, at first, but I've gradually grown to love and even depend on the strong guarantees provided by languages like Rust.

This is a presentation I recently gave at a work conference in article form. I've also recorded a YouTube video version if you prefer that format.