[richie_adler]

> And strings are lists

Eh, not really. Lists are mutable, strings are not.

Strings are iterable and sliceable, which makes them usable in many similar ways to lists, but they're not lists.

[volemo]

Afaik, in Clojure lists are immutable by default, and strings (not literal ones) are mutable in Common Lisp. So I'd say depends on the flavour of your Lisp.