The book covers how quality (subjective experience) arises from quantity (# of neurons)? Could you point me to a section please? I'm super intrigued.
It’s also possible you’re less interested in the brain per se, and more interested in “emergence” in the abstract. If that’s the case, there is no shortage of good books and resources you can turn to.
Look up “emergence science” and “complexity science” and go from there: it’s not an easy topic, it’s very cross-disciplinary, and to really understand it requires a fair amount of maths (imo).