Yeah, I was just going to edit my comment to say "well, at least the author states it is 100% Opinionated View" :) But you could skip that part and have more arguments, although without it you couldn't easily rule out some languages (e.g. LISP). I have to admit I'm also biased as a Clojure fan, and I find Scala too verbose and less functional than Clojure. Oh and btw, I read it all :P