Thinking obesity is one number is as dumb as thinking intelligence is one number. Card counting used to be one number, till they realized how much better two numbers did. Yet in this day of smart phones, one still sees geriatricians calculating stroke risk using a rule they can do in their heads. I'd rather trust my health care to prediction markets, if we could work through the data privacy issues.

So where's the BMI table that asks height and "how wide are your shoulders?"

For some of us, "big boned" isn't a euphemism.