That's when doing these types of tests enters a new realm. That's classic personalized medicine.

Most likely what's going to evolve is a panel of genetic tests that will allow us to predict risk of heart attack. I think it's going to happen in five years.

At the office I worked in before that, my boss required all employees to take a personality test that divided us neatly into one of four quadrants: Doers, Creators, Deciders, or Thinkers, categories that would then define our roles in the department. Most of the others were Doers; there were a couple of Deciders, too. I was the only Thinker. My first thought was, I think I need to get out of here.

At the office I worked in before that, my required all employees to take a personality test that divided us neatly into one of four quadrants: Doers, Creators, Deciders, or Thinkers, categories that would then define our roles in the department. Most of the others were Doers; there were a couple of Deciders, too. I was the only Thinker. My first thought was, I think I need to get out of here.

An awful lot of people who are walking around, seemingly healthy, drop dead of heart attack at 45 or 50. If we were better at identifying who those people are ahead of time, we could act aggressively to, for example, lower their cholesterol.

And we're trying to ask them to cut the hamburgers in half for kids who don't eat so much. If you're still hungry, you can go back for more.