Hold on, did someone copy K. Anders Ericsson and Robert Pool's homework?

I swear I have already read this book, and it was called "Peak" by K. Anders Ericsson and Robert Pool. The chapter outline is so similar, I must be having deja vu. What else could he have possibly uncovered on the topic? Peak was so in-depth, I am not sure this book is necessary. Chunking, learning styles, the 10,000 Hour Rule, various Memory topics, and, of course, Deliberate Practice. I mean... I have read a book multiple times before, but I am not sure this would be one of them.