“Algorithms in business appear to be magical, because they allow you to be smart about problems you haven’t seen before. The ‘angry customer’ algorithm or the ‘promote a book’ algorithm don’t always work, but they are approaches that work on a huge range of problems. All of which is a long way to wish Charles Darwin a happy birthday. The simple algorithm he described is often misunderstood but is robust and flexible and powerful, and it works for ideas and businesses as well as fruit flies and turtles. Ideas that spread, win. Sometimes ideas get changed in transmission, and sometimes those changed ideas spread even farther and with more impact than the ideas that came before them.”