An interesting book that doesn't quite achieve what it promises (the humble task of resolving the age-old question of what consciousnes is and how it emerges from unconscious matter). The authors seem convinced that it does, and maybe something is lost in the translation from math-heavy research papers to accessible prose, but I don't think I'm any closer to grasping it.

The key chapter on self makes a distinction between consciousness and self-awareness that I'm having a particularly hard time with, essentially saying that many creatures have qualia experiences of the world, but only humans are aware of themselves having them (unless they're actively engaged in something like the mirror test, at which point a self-aware self emerges only to disappear once the mirror is removed). And I just can't grok the concept of consciousness without awareness.

The idea of consciousness as a process, like a basketball game or hurricane, seems accurate but not exactly groundbreaking, and also an oversimplification. After all, a game is only a game because of the conscious actors playing it, and a hurricane is a dramatic example but that comparison relies on the drama of the image; a waterfall is a similarly context-dependent arrangement of water, but you'd be hard-pressed to convince me that saying ""consciousness is like a waterfall"" would tell me anything useful. Game, hurricane, and waterfall are all categories that emerge out of conscious beings assigning names and categories to physical processes; it's hard to see how they can be used to explain the emergence of consciousness itself.

I did find it was wonderfully written, and its descriptions of mental processes were clear and informative. I don't feel much closer to understanding the mystery of the self, but there's plenty to chew on regardless.