Jeff Hawkins is a big time technologist and entrepreneur. This book talks about his research on how human brain works. This book (and a followup whitepaper) forms the basis of research being done at Numenta - headed by Jeff himself. The book shows how our brain uses a hierarchical approach to be in “always predicting” mode. In one of the examples, Jeff mentions that when you come back home and the door knob is moved by an inch you would still notice. Another one is when you are climbing stairs and you miss one step your brain realized it right away and tried to rebalance your body. The concepts in this book have lead to “Hierarchical Temporal Memory” which is one of the most successful algorithms for anomaly detection.