I actually like "let" to introduce variables, it's what I scratch on paper when doing psuedo-code since before I met Rust or any other functional language. To

I actually like "let" to introduce variables, it's what I scratch on paper when doing psuedo-code since before I met Rust or any other functional language. To omit it (or something like it, e.g. "var" or "val") would be to omit crucial information. It's short, clear, and has a long history in mathematics and logic too.