STARRY MESSENGER

The well-known astrophysicist argues in favor of science.

Tyson, popular TV commentator and director of the Hayden Planetarium, points out that until a few centuries ago, all cultures explained natural phenomena through words from wise men (i.e., “authority”), sacred texts, and myths. Life was short, disease-ridden, and violent, and few claimed that important questions remained unanswered or that progress was possible. After the 17th-century Enlightenment, scientific inquiry began delivering explanations that “are true even when you don’t believe in them,” and there followed significant improvements to our quality of life as a species. Even though science has delivered the goods for centuries, Tyson warns against two alternatives. The first, deeply held personal beliefs, are not susceptible to argument and range from the literal truth of the Bible to the superiority of the Dodgers over the Yankees. Personal beliefs are benign unless they become coercive political beliefs, and the intensity of this coercion continues to increase in today’s political climate, sometimes culminating in violence. Tyson urges readers to base their actions on accurate observation—evidence rather than feeling—and a willingness to discard ideas that don’t work. “To deny objective truths is to be scientifically illiterate,” he writes, “not to be ideologically principled.” Among the best sections of the book is an essay in which the author, taking a page from early racist anthropology, delivers a tongue-in-cheek but strictly fact-based argument that Whites resemble chimpanzees far more closely than Blacks do. Marshalling his evidence, he shows “how easy it is to be racist.” Since it’s been proven (scientifically) that humans are terrible at assessing risks, flummoxed by statistics, impervious to facts that contradict their prejudices, and murderously attached to their tribe, Tyson may be fighting a losing battle. Still, he’s a welcome voice in the escalating fight with the array of forces aligned against science and rational thought.

Good sense for those who value good sense.