The armed forces (with the exception of the Navy, which just uses body fat percentage) also use BMI to determine if a recruit is fit to serve, with the minimum BMI being between 17 and 19 (depending on the branch) and the maximum being 27.5 (except for the Marines, who are more liberal in this regard).
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Insurance companies still use the BMI to determine insurance rates, with people on the high end being monetarily penalized because they stand a better chance of dying early and costing insurance companies a giant gravy boat full of money. The BMI supposedly tells us if the individual is underweight, normal weight, overweight, or obese. At the very least, that "crowd wisdom" method would probably be more accurate than the widely-used body mass index (BMI), which is a value derived by dividing someone's weight by the square of their height and expressed in units of kg/m2. Sure, just have some fat bastard stand naked on a platform while passersby guess how much fat he's carrying.
It makes me wonder if the same approach could be used to determine someone's body fat percentage.
This phenomenon was later coined "the wisdom of crowds," after the title of a book that described Galton's findings. Just for grins, statistician Francis Galton ran an analysis of the numbers and discovered that the average guess of the ox's weight was 1,197 pounds, which, amazingly, was only one pound off the actual weight (1,198 pounds). In 1906, eight hundred people tried to guess the weight of an ox at a county fair in Plymouth, England.
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