playing with graphs

Kevin Drum re-posts a chart on wind power made by Stuart Staniford showing that the number of new wind power plants installed in 2010 was way lower than in 2009 or 2008: This is meant as a starting point for discussion about the big economic issues that might've caused this. One of the many, many reasons I'll never make it as a political pundit, though, is that when I see a graph like this, I'm inexorably drawn to speculating about aspects of it that really have nothing to do with the intended point. In this particular case, I look at this graphic and ask myself "Why are there so many wind…