Michael Nielsen explicitly released his work under a Creative Commons (CC BY-NC-SA) license. This means sharing the PDF is legal, provided you don't sell it.
By sunrise, the code on his screen began to shift. It wasn't just data anymore; it was a landscape. He realized that "Deep Learning" wasn't about making machines smarter than humans—it was about teaching a stack of numbers how to "see" the world by breaking it into a million tiny, shimmering pieces. Michael Nielsen explicitly released his work under a