Friday, February 25, 2011

Cum Hoc, Ergo Propter Hoc

Near-perfect correlations exist between the death rate in Hyderabad, India, from 1911 to 1919, and variations in the membership of the International Association of Machinists during the same period. Nobody seriously believes that there is anything more than a coincidence in that odd and insignificant fact.

-David Hackett Fisher

 

That cycle training may be offered more in environments that are hostile to cyclists does not mean that cycle training is the cause of that hostility, or reinforces it in some ill defined way.

Here endeth, &c.

Posted via email from monkeyphoto's posterous

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