Many health care experts think BMI is a useful tool to measure weight and health risks, but others question its accuracy. Some believe a better way might be to take out the tape measure and check your waist circumference. Your BMI is calculated using height and weight. The Nurses? Health Study II, which followed 116,000 nurses over a 15-year period, indicated that the lowest mortality rates were found in women with a BMI of 19 or less. Gold says, correctly, that the Basic Metaphor of Infinity (BMI) is the most important metaphor in the book, and she points out (also correctly) that the BMI is not an isomorphism (that's right!). Gold accurately observes that the Basic Metaphor of Infinity characterizes "something genuinely new" (i.e., an end to an unending process: actual infinity).
