title: Why gesture recognizer outlets are strong by default
body: <p>When you create an outlet for a control by Ctrl-dragging in Interface Builder it usually suggests to make the outlet weak. </p>
  
  <p>But if you create an outlet for a gesture recognizer the suggestion is to make it strong.  I am curious what is the reason behind of this, what is wrong with making gesture recognizer outlets weak too?</p>