Wednesday, March 17, 2010

Why they should teach logic in schools:

Class, repeat after me: Correlation does not imply causation.

Every time I re-read this article, the stupider it seems.

Take this bit:
Another U.S. study found the employment rate for car owners was 80 per cent; for those without a car, it was 53 per cent. And there is a clear causal link at work: having a car increases your chances of finding a job.


Allow me to formulate an alternative hypothesis for the same data: "Having a job increases the likeliness you will own a car." Both logical and compelling eh? Have a job, get paid, and suddenly you can afford a car!

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