If you'd say "you can't even be sure you have the parts you have", it kind of makes sense, but the way we (Clojure devs) commonly use the REPL-in-editor kind of

If you'd say "you can't even be sure you have the parts you have", it kind of makes sense, but the way we (Clojure devs) commonly use the REPL-in-editor kind of makes that moot. But as it stands, I'm not sure I understand what you mean?