My review is over long. Yet, I have omitted here detailing the telling descriptions of the battles over school desegregation in the 1950s, the Civil Rights Movement of the 1960s, and the reemergence of biological explanations of social behaviors in the 1970s and 1980s. The reader can savor those detailed tellings for himself or herself. Tucker has exposed the mental gymnastics of the social scientist who abuses science in the name of ideology. However, science cannot provide a basis for human judgment precisely because science can never provide all the facts.
Science is, at best, a statement of probabilities, an approximation, a contingency statement.
The judgment that all men are created equal is not a scientific fact but a political and moral judgment about which science has nothing to say. Attempts to use science as if to say something about the moral order are misunderstandings or worse. If African Americans are short or tall, young or old, male or female, or whatever else, the knowledge says nothing about their rights under the Constitution. However, scientists have done wicked things down through history and done them in the name of science. There is implied here a notion that science can, somehow, explain and justify political inequality.