Your Teaching Moment in One Chart of the Day

Via Gizmodo (and Doug Mataconis of Outside The Beltway), we now have the perfect illustration next time you want to teach the concepts of correlation and causation:

Graph superimposing U.S. annual homicide rate and usage share of Internet Explorer, 2006-11.

It might even fit better as an AR(1) process.

Graph originally from Twitter user @altoncf.