title: Calculating factorial using Lisp
body: <p>I was reading a code sample that calculates the factorial using Lisp as below: </p>
  
  <pre><code>(defun fatorial (n)
    (cond
      ((= n 1) 1)
      (t (* n (fatorial (- n 1))))))
  </code></pre>
  
  <p>So, I was wondering what is <code>t</code> in this code sample? Does it have any special meaning in Lisp? I searched but couldn't find my answer!</p>