[flavio81]

>How did they adapt to dynamic types?

You mean dynamic typing, I understand.

Clojure (and Common Lisp) is strongly typed, so if you expect type A and you give a value of type B, an error will be raised.

On Common Lisp, which is an interactive development language, you just inspect the stack frame where the error was raised, find the problem, correct the code, recompile your function (while the code is running), and "restart" the stack frame, so the execution continues (without having to restart or redeploy everything and try to replicate the bug). Thus, it is no big deal at all.

On Clojure i'm not so sure how extensive is the interactive support. But there is "spec", which can help.