One of those books that keeps occupying your mind even after you put it down. Powerful examples illustrate the dominant message that the complexity of our world demands randomized experimentation, rather than fundamental choices that can turn out wrong, just because the world has changed in the mean time or your calculations didn’t include all the right parameters. And if your world is too complex, you need to unbundle it, to make sure that you can fail in one part of the system without making your system collapse. Highly recommendable for anyone. Whether you’re in the medical industry, education sector, high tech or the military. Harford provides powerful insights for organizations, industries and even individuals.