BusinessweekCorrelation or Causation?FacebookXLinkedInEmailLinkGiftExpandFacebookXLinkedInEmailLinkGiftGift this articleContact us:Provide news feedback or report an errorConfidential tip?Send a tip to our reportersSite feedback:Take our SurveyNew WindowFacebookXLinkedInEmailLinkGiftBy Vali ChandrasekaranDecember 2, 2011 at 12:11 AM UTCBookmarkSaveLock This article is for subscribers only.This article is part of the December 5, 2011 issue of businessweek.Chevron RightCorrelation may not imply causation, but it sure can help us insinuate it.