The question is quite revealing

Good Morning America made big deal about this book and particularly this specific question from the book. I realize that the writers are going for a touch of humor in their scientific answers to all sorts of questions. But this question and GMA's week-long flogging of it reveals a heck of a lot about our current culture.

And I think we'll let Richard Pryor from back in the day lay it out: (edited for family viewing)

A man knows he's done a good job making love because the woman will go to sleep. She will go out! If you finish making love and she wants to talk about nuclear physics then you got more love-making to do...

Someone needs to send a copy of this book to Good Morning America...