When Science Against Prejudice Stops Being Science

2026-08-27 · AI-generated insight

These notes form an uncomfortable triptych about how the empirical case against racism was actually made — and what it cost.

Boas and Lewontin represent the twin pillars of the anti-racist scientific consensus: Boas arguing that observed group differences are products of history rather than biology, Lewontin arguing that genetic variation is overwhelmingly within-group rather than between-group. Both are filed as science against prejudice. But notice the structure of Lewontin's passage: it moves from an empirical claim (most variation is between individuals) directly to a normative verdict (racial classification is "positively destructive" and "no justification can be offered for its continuance"). The moral conclusion arrives fused to the data, which should make us ask whether the data drove the conclusion or vice versa. The filing under Correlation Across Many Variables quietly gestures at the known technical objection: Lewontin measured loci one at a time, and classification depends on correlated structure across many loci — precisely the dimension his framing excluded.

The Coon anecdote then supplies the institutional mechanism that the other two quotes, standing alone, conceal. The AAA denounced Putnam's book after a meeting where almost no one present had read it — condemnation without examination, executed by the very body whose authority rests on the public's assumption that scientists examine before condemning. Whatever one thinks of Putnam's thesis (and Coon's defense of it), the episode shows that the consensus Boas and Lewontin anchor was enforced socially as well as argued empirically.

The synthesis is not that the anti-racist position is wrong — Lewontin's core finding stands. It's that a conclusion can be simultaneously correct and badly defended, and the bad defense creates a standing liability. When the guardians of a true claim rely on unread denunciations and is-ought slides, they hand ammunition to anyone who later exposes the procedural rot, allowing the discredited method to cast doubt on the sound finding. Science against prejudice only retains its authority if it stays science all the way down.

Woven from these notes

It is clear that our perception of relatively large differences between human races and subgroups, as compared to the variation within these groups, is indeed a biased perception and that, based on randomly chosen genetic differences, human races and populations are remarkably similar to each other, with the largest part by far of human variation being accounted for by the differences between individuals. Human racial classification is of no social value and is positively destructive of social and human relations. Since such racial classification is now seen to be of virtually no genetic or taxonomic significance either, no justification can be offered for its

— Lewontin 2026-07-20

Boas’s rejection of the traditional view was truly radical; it simply denied the existence of any significant innate differences between savage, colored people and civilized, white people. The differences in physical appearance, in short, did not lead to any significant difference in mental or social function. That there were observable social differences was undeniable, but the explanation for those differences. Boas maintained, was that they were the product of different histories, not different biological experiences.

— Carl Degler In Search of Human Nature: The Decline and Revival of Darwinism in American Social Thought 2026-07-21

Carleton Coon was one of the greatest anthropologists of the 20th century and a champion of the study of racial differences. In 1961 he was elected president of the American Anthropological Association. It was during this year that Carleton Putnam's infamous book Race and Reason came out. Putnam's book argued that there were significant differences between the races and that this had important political implications. A few anthropologists became upset when they saw the book gain popularity and wanted the AAA to intervene. But they knew that Coon supported the book and that, as a result, having the AAA take action against it would be difficult. So they organized a secret meeting behind Coon's back in order to issue a statement denouncing Putnam's work. Coon found out about the meeting and went to stop it. Upon entering the meeting Coon asked all the association members who had actually read Putnam's book to raise their hands. Only one rose. He then asked for the hands of everyone that had even heard of the book prior to that meeting. Only a few hands rose. None the less, the statement against the book passed. Coon, disgusted by the actions of his peers, resigned from the AAA (1). This incident stands out in the history of science as a particularly clear example of scientists not living up to what people expect of them. People often take what scientists say for granted. They trust that scientists have looked at the evidence rationally and are giving the public as accurate an account of all the relevant facts as they can. When explaining science to laypeople researchers are expected to only make authoritative statements on topics they are knowledgeable of, to not lie about scientific evidence, and to not omit obviously relevant facts. People trust scientists to do these things and so feel comfortable taking what they tell them for granted. (See

2026-07-21

It is clear that our perception of relatively large differences between human races and subgroups, as compared to the variation within these groups, is indeed a biased perception and that, based on randomly chosen genetic differences, human races and populations are remarkably similar to each other, with the largest part by far of human variation being accounted for by the differences between individuals. Human racial classification is of no social value and is positively destructive of social and human relations. Since such racial classification is now seen to be of virtually no genetic or taxonomic significance either, no justification can be offered for its continuance.

— Lewontin 2026-07-21