Ah, this famous REPL driven development. After which we are left with highly coupled codebase that has almost no tests. After doing clojure for 6+ years I forced myself at some point to disable REPL, it allows one to go fast in short term and creates way too much debt long term.

Nowadays I find repl driven approach to be not so sustainable for mid to large sizes of teams.

It is fun on small/personal projects though.