Trained in political science, Simon became one of the founding fathers of artificial intelligence, computing, and cognitive science during the 1950s and 60s. This is a relatively informal collection of essays that has been widely, and justly, influential. From the preface (xi): “Engineering, medicine, business, architecture, and painting are concerned, not with how things are but with how they might be—in short, with design. . . . These essays then attempt to explain how a science of the artificial is possible and to illustrate its nature. I have taken as my main examples the fields of economics (chapter 2), the psychology of cognition (chapters 3 and 4), and planning and engineering design (chapters 5 and 6).” Chapter 7 is entitled “The Architecture of Complexity” (originally published in 1962) and takes up the problem of biological evolution. The bonus section of this post is based on a thought experiment or parable from chapter 3, “The Psychology of Thinking: Embedding Artifice in Nature.”