Why Machines Learn by Anil Ananthaswamy offers a profound exploration into the mathematics that underpins the remarkable advancements in machine learning and artificial intelligence. Through a rich narrative, Ananthaswamy demystifies the complex algorithms that are increasingly shaping our world. In this enlightening book, readers are taken on a journey through the historical roots and modern-day marvels of AI. From the mathematical foundations laid centuries ago to the cutting-edge developments of the 21st century, Ananthaswamy sheds light on how simple mathematical principles, such as linear algebra and calculus, evolved to create the sophisticated machine-learning systems of today. These systems are now integral to various aspects of life, making decisions that were once the preserve of human experts. Whether it's approving mortgage loans, diagnosing cancerous tumours, or determining bail eligibility, machine learning is increasingly trusted to make life-altering decisions. Moreover, AI is revolutionising scientific fields, aiding in the study of genomes, the search for extra-solar planets, and even the complexities of quantum systems. At the heart of this revolution is the newfound synergy between mathematical theory and computer innovation. Ananthaswamy eloquently explains how 18th and 19th-century mathematical concepts came to life with the advent of computer science and the powerful chips designed initially for video games in the 1990s, igniting the AI explosion we witness today. Ananthaswamy provides not just a deep understanding of the core mathematical principles behind artificial intelligence but also delves into the ethical and philosophical questions these technologies raise. He argues that to fully harness and responsibly deploy our wondrous technologies, we must comprehend their inherent limitations—insights that are deeply embedded in the mathematics making AI possible. Why Machines Learn is a compelling read for anyone intrigued by the interface of mathematics, technology, and their profound impact on the modern world. Ananthaswamy's lucid prose ensures that even complex concepts are accessible, making this book a must-read for both novices and experts eager to understand the forces driving the AI revolution.