The author does not claim to be a trained PhD in neuroscience. But he does claim to know about neuroscience, to have worked with neuroscientists and to have published papers on neuroscience. I think I have caught a few minor (and largely irrelevant) mistakes. I found the book extremely thought provoking. He approaches neuroscience in a way that seems novel. He attempts to understand how the brain works based on insights from evolution and comparative anatomy and from his experience with artificial intelligence. He discussed 5 breakthroughs that occurred along the evolutionary path that led to the development of human intelligence in light of the progress that has been made in artificial intelligence. To me, the approach seems quite sensible. I am about half-way through the book. I also listened to an interview he gave on the podcast "brain inspired". My assessment is that this is a very serious book that is relatively easy to read. I am not a neuroscientist, so perhaps his thoughts are not as novel as they appeared to me to be. I feel, however, that I am getting more from the book than from most of the more philosophical books that I have read (or tried to read) on the subject.