The future promises a detailed genetic dissection of personality, and it is hard to imagine that what we discover will not tip the scales of the nature/nurture debate more and more in the direction of nature—a frightening thought for some, but only if we persist in being held hostage by a static, ultimately meaningless dichotomy. To find that any trait, even one with formidable political implications, has a mainly genetic basis is not to find something set immutably in stone. It is merely to understand the nature upon which nurture is ever acting, and those things we, as a society and as individuals, need to do if we are better to assist the process. Let us not allow transient political considerations to set the scientific agenda. Yes, we may uncover truths that make us uneasy in the light of our present circumstances, but it is those circumstances, not nature’s truth, to which policy makers ought to address themselves.
American molecular biologist, geneticist, zoologist and Nobel Laureate (1928–2025)
James Dewey Watson (April 6, 1928 – November 6, 2025) was an American scientist, most known as one of the four discoverers of the structure of the DNA molecule.
From: Wikiquote (CC BY-SA 4.0)
Pen Names:
el Caligula de la biología
Birth Name:
James Dewey Watson
Alternative Names:
James D. Watson
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Jim Watson
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J. D. Watson
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And so if there is a paramount ethical issue attending the vast new genetic knowledge created by the Human Genome Project, in my view it is the slow pace at which what we now know is being deployed to diminish human suffering. Leaving aside the uncertainties of gene therapy, I find the lag in embracing even the most unambiguous benefits to be utterly unconscionable. That in our medically advanced society almost no women are screened for the fragile X mutation two decades after its discovery can attest only to ignorance or intransigence.
The opposition to GM foods is largely a sociopolitical movement whose arguments, though couched in the language of science, are typically unscientific. Indeed, some of the anti-GM pseudoscience propagated by the media—whether in the interests of sensationalism or out of misguided but well-intentioned concern—would be actually amusing were it not evident that such gibberish is in fact an effective weapon in the propaganda war.
Knowledge, even that which may unsettle us, it surely to be preferred to ignorance, however blissful in the short term the latter may be. All too often, however, political anxiousness favors ignorance and its apparent safety: we had better not learn about the genetics of skin color, goes the unspoken fear, lest such information be marshaled somehow by hatemongers opposed to mixing among the races.
The discovery of the double helix sounded the death knell for vitalism. Serious scientists, even those religiously inclined, realized that a complete understanding of life would not require the revelation of new laws of nature. Life was just a matter of physics and chemistry, albeit exquisitely organized physics and chemistry. The immediate task ahead would be to figure out how the DNA-encoded script of life went about its work.
Murray and Herrnstein’s assertion, however, was that the discrepancy was so great that environment likely couldn’t explain it all. Similarly, environmental factors alone may not account for why, globally, Asians have on average higher IQs than other racial groups. The idea of measurable variations in average intelligence among ethnic groups is not one, I admit, I want to live with. But though The Bell Curve’s claims remain questionable, we should not allow political anxieties to keep us from looking into them further.
Right now, at my institute in the US we are working on gene-caused failures in brain development that frequently lead to autism and schizophrenia. We may also find that differences in these respective brain development genes also lead to differences in our abilities to carry out different mental tasks. In some cases, how these genes function may help us to understand variations in IQ, or why some people excel at poetry but are terrible at mathematics. All too often people with high mathematical abilities have autistic traits. The same gene that gives some people such great mathematical abilities may also lead to autistic behaviour. This is why, in studying autism and schizophrenia, we believe that we shall come very close to a better understanding of intelligence and, therefore, of the differences in intelligence.