I am unsure about this book. As for Blackmun's tortured reasoning, here's my favorite part of the essay:
While considering a case with profound implications for bio-ethics, they sought guidance in the wisdom of people who thought that the bowel was the seat of human emotion, which gives new meaning to the phrase "You move me." One might as well base nuclear energy policy on the work habits of Mayan pyramid builders.
I was glad to hear a comment on Fox News that most Americans now consider "abortion" a dirty word. That it's no longer respectable. It appears that Americans have now been educated as to what abortion really is (murder of human life), and when life begins.