> He also recognized the fallacies that improper statistical reasoning could propagate, noting that the numbers said nothing about any individual, but that nonetheless the statistical construction of an “average man” could reveal much about society as a whole. Also, to the benefit (or annoyance) of many dieters, he developed the formula for Body Mass Index, so that you can properly quantify how overweight you are.
Second sentence falls prey to the fallacy described in the sentence immediately preceding it.