4,5/5. Factual, informative, straight to the point, the exact thing I was looking for a while, concerning octopus. Not just about octopus but mostly. There is a strong scientific aspect to it, a bit of philosophical thinking about consciousness and what we think, but can't really prove 100% sure in a scientific way and an overall very well done read if you're interest in octopus, origin of consciousness, evolution and stuff like that. I like it a lot!