[vitno]

This person is getting downvoted... but it isn't.

Lisp, especially in it's early implementations is highly imperative. This is why when people talk about Clojure they always talk about Immutability, it's part of what forces a functional style on the language.

[catnaroek]

Immutable data structures don't “force” a functional style, cf. Prolog.

And Lisp is highly imperative even today.

[pjmlp]

They talk about Clojure because they weren't even born when we were using Lisp systems.