(defproject scrabble "0.1.0-SNAPSHOT"
  :dependencies [[org.clojure/clojure "1.6.0"]
                 [thinktopic/cortex "0.1.0-SNAPSHOT"]]
  :main scrabble.core)

(defproject scrabble "0.1.0-SNAPSHOT"
  :dependencies [[org.clojure/clojure "1.8.0"]
                 [thinktopic/cortex "0.1.0-SNAPSHOT"]]
  :main scrabble.core)

Update to newer version of clojure.
[examples/scrabble] Update to newer version of clojure.

thinktopic/cortex,thinktopic/cortex,thinktopic/cortex,thinktopic/cortex