I can forgive a book for having a more popular orientation if it at least gets the facts right - this one often doesn't (the less said about the brain chapter, the better but egregious errors also are rife in the chapters on voice and menstruation). The overly popular tone of the book was also grating - rather than call species by their names, Bohannon refers to them as a single individual with a nickname. She also often throws in extraneous sentences to make the tone more cutesy but in ways that don't add any information. You're better off going nearly anywhere else for your human biology information