The researchers behind the original . Neat and tidy, the pie chart—originally proposed in a 2005 paper by researchers Sonja Lyubomirsky, Kennon M. Sheldon, and David Schkade—painted a clear picture of ...

While pie charts appear to be simple, sometimes they can go wrong. Really, really wrong. And, if you love pie charts just a bit too much, you might end up in need of a pie chart intervention.