This book presents the most compelling arguments for and against implementing a basic income guarantee today, in the voice of proponents and critics, in alternating chapters. Tables, figures, and pictures illustrate the key concepts and evidence, which include benefit cliffs and disincentive deserts, time series macroeconomic data, business, economic, and technological change (BETC), artificial intelligence and other general purpose technologies, along with advanced robotics, the environmental Kuznets Curve, income distributions, democracy, social justice, dependence, autonomy, and economic freedom. A neutral, non-partisan tone introduction defines UBI and covers the history of universal income plans, while the conclusion summarizes the main arguments for and against UBI before surveying alternative policies, including universal basic asset, credit, service, job, and training plans.