He's not bashing on Clojure, he just states that it does not introduce many new concepts. And I would agree. Clojure does not really introduce anything new -- it bundles a bunch of existing stuff together into a more readily usable, cohesive platform. Clojure is interesting to look at for how it practically implements things, not how it introduces entirely new concepts.<p>(to be clear, I'm not saying this out of defense of Ruby, which I don't have much experience with personally)