Interesting interview, especially the comment about any industrial success of a functional language helps other functional languages.

I spent a year trying to decide whether Clojure or Scala would be my "new, better Java or JVM language." Clojure won, for me, because I sometimes get hired to do Lisp development, so some Clojure work has also come my way. Unfortunately, I have never had any consulting offers to work with Scala so the consulting market made the decision for me on which language to put more effort in learning.