When the Empirical Claim Ends and the Verdict Begins

2026-08-11 · AI-generated insight

Read Lewontin's passage carefully and you can watch a seam open mid-paragraph. The first sentence is an empirical claim: most genetic variation lies within populations, not between them. The second is a verdict: racial classification is "of no social value and positively destructive," therefore "no justification can be offered for its continuance." The statistic is asked to carry a moral conclusion it cannot support on its own — and notably, the note is filed under Correlation Across Many Variables, which quietly names the rebuttal. Winegard and Carl supply it: populations separated by oceans, deserts, and mountains diverged under different selection pressures, and while any single locus varies mostly within groups, the correlated structure across many loci is what makes populations distinguishable. Lewontin's premise can be true while his taxonomic conclusion fails, because classification never depended on single-locus variance in the first place.

But the more interesting rhyme is with the Coon anecdote, which shows what happens downstream when a verdict like Lewontin's becomes institutional reflex. The anthropologists who voted to denounce Putnam's book had, almost to a person, never read it. They didn't need to — the conclusion was already settled at the level of professional identity, so examination was superfluous. This is the fused empirical-moral claim operating as social machinery: once "the science says race isn't real" and "racial classification is destructive" are welded together, questioning the empirical half is the moral transgression, and no hand needs to rise.

Warne's abstract then reads as an attempt to work inside the wreckage of that fusion. Note its extraordinary hedging: ">0% genetically caused," "not fully conclusive," "applies only to native English speakers born in the United States." This is what empirical writing looks like when the author knows the Coon dynamic awaits — every claim pre-shrunk against condemnation without examination. Whether Warne's five lines of evidence hold up is a separate question; the structural point is that Lewontin's rhetorical move and the AAA's procedural one created a discourse in which the form of a claim (careful, bounded, probabilistic) matters less than which side of the fused verdict it lands on. The seam Lewontin opened in 1972 never closed; it became the fault line everyone else has to write across.

Woven from these notes

The past 30 years of research in intelligence has produced a wealth of knowledge about the causes and consequences of differences in intelligence between individuals, and today mainstream opinion is that individual differences in intelligence are caused by both genetic and environmental influences. Much more contentious is the discussion over the cause of mean intelligence differences between racial or ethnic groups. In contrast to the general consensus that interindividual differences are both genetic and environmental in origin, some claim that mean intelligence differences between racial groups are completely environmental in origin, whereas others postulate a mix of genetic and environmental causes. In this article I discuss 5 lines of research that provide evidence that mean differences in intelligence between racial and ethnic groups are partially genetic. These lines of evidence are findings in support of Spearman’s hypothesis, consistent results from tests of measurement invariance across American racial groups, the mathematical relationship that exists for between-group and within-group sources of heritability, genomic data derived from genome-wide association studies of intelligence and polygenic scores applied to diverse samples, and admixture studies. I also discuss future potential lines of evidence regarding the causes of average group differences across racial groups. However, the data are not fully conclusive, and the exact degree to which genes influence intergroup mean differences in intelligence is not known. This discussion applies only to native English speakers born in the United States and not necessarily to any other human populations.

— Russell Warne Between-Group Mean Differences in Intelligence in the United States Are >0% Genetically Caused: Five Converging Lines of Evidence 2026-07-20

A more plausible conception of race, one that is consistent with how careful philosophers and geneticists use the term, recognises that: When humans began leaving Africa around 75,000 years ago, they dispersed across a much greater range of environments than they had previously inhabited. The humans that settled in different geographic regions subsequently came under different selection pressures (e.g. temperature, seasonality, altitude). Natural barriers such as oceans (e.g. the Atlantic), deserts (e.g. the Sahara) and mountain ranges (e.g. the Himalayas) impeded gene flow between different populations for substantial periods of time. When there is limited gene flow between populations that have come under different selection pressures, we would expect them to gradually diverge from one another over via the processes of genetic drift and natural selection.

— Bo Winegard, Noah Carl Superior: The Return of Race Science—A Review 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