Ever since it was first formulated a century and a half ago, the Second Law of thermodynamics (also known as the "law of entropy increase") has had an air of mystery about it. Why is it true? Is it even always true? In this book, Stephen Wolfram builds on his recent breakthroughs work in the foundations of physics to finally deliver a satisfying resolution to the central mystery of the Second Law, elegantly showing how it emerges as a general feature of processes that can be described computationally and their interplay with our computational characteristics as observers. The effort to understand the Second Law has been for Wolfram a 50-year quest, beginning when he was just 12 years old. This book tells the story of that quest, as well as traces the whole remarkable history of the Second Law. Written with great clarity and richly illustrated with both striking computational diagrams and extensive historical material, this book will be of interest to anyone who wants to understand the foundations and origins of one of the most important and widely applied principles of modern science.
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