When you look this up there are many versions or interpretations - but they all come back to the same thing; you've misunderstood something. 

Day to day life usually rumbles along happily enough until these tension points : a misunderstanding, a chance to become an email warrior and go at someone full on. 

There are two tension points in this piece, one close to the beginning one near the end - the rest is a doddle, gently meandering along .