Kimbal Musk

I did a business in a box called College Pro Painters. They taught you how to paint houses, how to hire and fire, how to sell, how to deal with customers. You got a one-year franchise. It was the hardest year of my life in terms of hard work. I won manager of the year. It was very successful.

By irreducibly complex I mean a single system composed of several well-matched, interacting parts that contribute to the basic function, wherein the removal of any one of the parts causes the system to effectively cease functioning.