Hard to disagree with Rich Hickey re non-breaking changes. See for yourself the "Fig. 3. Clojure codebase—Introduction and retention of code" chart at page 26

Hard to disagree with Rich Hickey re non-breaking changes. See for yourself the "Fig. 3. Clojure codebase—Introduction and retention of code" chart at page 26 of https://download.clojure.org/papers/clojure-hopl-iv-final.pdf https://download.clojure.org/papers/clojure-hopl-iv-final.pd... Rich Hickey is right and has a track record to show.