This book is more about the ethics of mental manipulation/influence than it is about the ethics of neurotechnology, and viewed from that lens Farahany gives a good overview of this topic. IMO there's too much credulity given to statements from industry and researchers rather than interrogation of their results, and there's more speculation than I'd like about what might be possible rather than what is truly possible in general circumstances today.

This book is strongest when examining legal and philosophical issues, and the insight Farahany gives on these topics are extremely valuable.