This nails it for me. Clojure has unique advantages over other, less composable languages and the design of clojure.spec is where you see it most clearly. Rich

This nails it for me. Clojure has unique advantages over other, less composable languages and the design of clojure.spec is where you see it most clearly. Rich Hickey's presentation on clojure.spec demonstrates how you can define contracts for your functions which go well beyond what type systems have to offer.