Improvement Insights Blog
Confused about causation and correlation (from Seth Godin’s blog)
Have you noticed that in most cities, every time there are lots of umbrellas, it’s raining?
From this analysis, the obvious way to make it rain is to be sure that everyone has an umbrella, preferably a black one, since that seems to be the kind that’s most visible during big storms.
http://sethgodin.typepad.com/
