title: Why are the two sets not equal?
body: <p>The question is about <code>not=</code>:</p>
  
  <pre><code>Clojure&gt; (doc not=)
  ---------------------
  Cloure.core/not=
      ([x] [x y] [x y &amp; more])
      Same as (not (= obj1 obj2))
  
  Clojure&gt; (not= [1 2 3] [1 2 3])
  false
  Clojure&gt; (not= '(1 2 3) '(1 2 3))
  false
  Clojure&gt; (not= #(1 2 3) #(1 2 3))
  true
  </code></pre>
  
  <p>Any suggestion is appreciated!</p>