Tangentially related, but has anyone here read his other book, "Creativity: The Psychology of Discovery and Invention". I loved "Flow" (his main book) so I wanted to read something else from him, but somehow it was just not the same. In the Flow book, I understood which concepts I should understand as a reader and the background of them, including individual stories, was very coherent. I can't really say the same about the other book. I would be interested what others think about this.