Reasoning is the critical thinking skill concerned with the production of arguments: making them coherent, consistent, and well-supported; and responding to opposing positions where necessary. The Better Angels of Our Nature offers a step-by-step class in precisely these skills. Author Steven Pinker's central thesis is simple: mankind has become increasingly less violent over the centuries, and will continue to do so. Pinker is aware, though, that many people instinctively believe the opposite, and Better Angels is devoted to marshalling data to support and illustrate this central...