In "A Vast Machine," Paul N. Edwards masterfully navigates the intricate and captivating history of climate science, unraveling the complex relationship between atmospheric models and the data they produce. Through a compelling narrative, Edwards challenges the skepticism surrounding global warming, revealing that the very essence of understanding our planet's climate hinges on sophisticated modeling techniques. These models are not mere predictions but are foundational to transforming raw signals and observations into coherent, global data about the Earth's atmosphere. Edwards eloquently demonstrates that without these models, our grasp of the climate's past, present, and future remains out of reach, making a compelling case for the significance of simulation in the scientific quest to comprehend global warming. Beyond simply chronicling the evolution of climate science, Edwards delves deep into the societal and technical mechanisms that have allowed us to measure, analyze, and predict climate trends. "A Vast Machine" is more than just a history; it is a profound exploration of the symbiotic relationship between science and technology, illustrating how data models have become indispensable tools in the endeavor to solve one of the most pressing issues of our time. Edwards' work is a testament to the ingenuity and persistence of scientists who, through the lens of models, provide a clearer vision of our planet's climatic future. This book is an essential read for anyone looking to understand the underpinnings of global warming and the pivotal role of scientific modeling in navigating the challenges it poses.