Fast-iterating is only useful when you have a small team and are getting off the ground. Every project spends 90% of it&#x27;s life in maintenance and will be handed off between dozens of developers who will just ask &quot;WTF is this?&quot; no matter what you do. Java provides a lot more traceability and determinism as well as verbose idioms that make it easier to deal with. Like I&#x27;ve said many times, Java doesn&#x27;t solve programming problems, it solves organizational problems.