title: Normal Approximation versus MAP in pymc
body: <p>Can anyone explain to me what does Normal Approximation do over and above what is done by MAP in some easy words?</p>
  
  <p>I have read enough on <a href="http://pymc-devs.github.io/pymc/modelfitting.html#normal-approximations" rel="nofollow">http://pymc-devs.github.io/pymc/modelfitting.html#normal-approximations</a>
  but it is too complicated for me.</p>
  
  <p>An example showing the difference will be very helpful.</p>