For everyone who believes that "one man, one woman" is a simple statement, I wish there were a requirement to read the first sections of this book. For everyone who thinks that pregnancy is nothing but a woman carrying a fetus around in her abdomen for nine months, I wish there were a requirement to read this book.
I confess I would not pass a test on its contents. Maybe the very fact that it is laden with complicated, detailed, though fascinating information has something to do with the fact that I am the first to write a review. Nonetheless, I think reading, or at least scanning, it would profit anyone who has an opinion about sex, whether it applies to choices on the abortion issue or attitudes about homosexuality, or even just why we do it. If nothing else, it would force one to be aware of the complexities of fetal development, pregnancy, childbirth, and gender determination. Knowledge has taken us way beyond dichotomous thinking.
In many ways, even though it's not obviously the intent of the author, it is a demonstration of the extent to which we resist scientific evidence which contrasts with what we would like to believe. Fortunately, when facts do break through and evidence is accepted, it leads to additional - in this case fascinating - discoveries.
I would warn any potential reader who follows through to the end, however, that a strong willingness to accept ambiguity is essential, as it is for any scientific report. That's the exciting thing about science. Rarely, if it ever happens, does one arrive at a final answer. The excitement lies primarily in the questions and possibilities raised.
You might want to avoid reading through to the end if you have a hard time tolerating change, because the book heads in the direction of gestation outside the female body. It seems like science fiction but it is presented as serious business. To the extent that the content is ultimately validated and expanded, I have no doubt the impact of the discoveries he describes would lead to active and heated discussions regarding ethics and future research. As a psychologist I'd want to see many questions raised, explored, and studied.
As for the content, it was somewhere around 1827, with the discovery of human eggs, that old beliefs about the father's contribution were abandoned - and then only with difficulty. The view until that time was that the sperm implanted a fully formed embryo into the womb, the function of which was to provide a safe haven for its growth. As for the process of impregnation, the belief that any descriptions of the interaction of the sexual organs were pornographic kept the focus on the 1680 text "Aristotle's Masterpiece,' long after empirical evidence demonstrated its errors. The US was a bit ahead of the UK which banned more modern texts until 1960.
There follows more fascinating detail than I can describe here with full accuracy. There are, for example, the more frequent DNA mutations in sperm because of the more frequent divisions. There is the mother's epigenetic contribution to variations. There is the father's protective contribution of placental material that moderates the battle between the needs of the mother's body and the fetus. All of this, at least as I read it, making clear that it is not a simple matter of one XX or XY combination coming together. It isn't just the Y chromosome that makes a difference for development of a male; it's having the right bits of the Y chromosome. In fact, he gives the example of males (though infertile) with an XX structure. Even before the egg begins to divide, it seems, there are external influences.
Then there are the hormonal effects. Consider the female baby in Peru who began menstruating at the age of 8 months and gave birth to a child at 5 years.
The risks to the mother are real. One fact that struck me was the chance of preeclampsia, potentially fatal, being greater in the first pregnancy, More specifically, the first pregnancy with the father. A woman who has had many pregnancies with the same man apparently acclimatizes her immune system to him, but runs the same risk with a new impregnator as if she had never borne a child. As I read it, the reason is not well understood. I couldn't help but apply it to the issue of rape. By definition, assuming this is not spousal rape, impregnation by force with a strange man, it would seem, increases the chances of preeclampsia.
I've given only a sample here of what I understood him to say in this book. I'm not even exploring the latter part of the book, from which his title comes. There he reports on research that may in the future make it possible for men to carry the fetus or for development completely outside the body. Of course, he reports on all the possibilities in between, currently being practiced for infertile couples, or people wishing to parent without a partner.
On the issue of the "pro life"(anti-choice) position that argues for putting the life of the fertilized egg above all other factors, including the danger to the mother in every pregnancy, I found his point helpful that "sex is not designed for the individual; it is designed to benefit the populations." The choice between "pro-life" and pro-choice is the lifting of group need over the individual. Sorry, but that sounds like the roots of communism in its rawest form - sacrificing individual "good" for the "good" of the masses.
If you are willing to take a journey into facts that will challenge simplistic notions of fetal egg/sperm contributions, or gender development in utero, then risk an exiting trip into ongoing research. Be willing, as well, to challenge the "facts" with evidence That's what ethical science is all about.