Every now and then, it is good to pay attention to what those who think differently than you do. David Zervos certainly has a different opinion of quantitative easing and negative rates. I am going to be writing about negative rates in this week's letter, but thought I would let David's tell you why he thinks Japan and Europe should take their rates even further into negative territory. I can guarantee you that type of thinking is quite widespread in policy circles. Just good to know and think about what's out there sometimes, even if you may not agree…