>> But afaik most immutable, persistent data structure libraries in other lisps either (1) had poor performance or (2) were developed after clojure and borrowe

>> But afaik most immutable, persistent data structure libraries in other lisps either (1) had poor performance or (2) were developed after clojure and borrowed from clojure. >> only abstraction is a linked list > What language are you referencing here? They are referring to Lisp.