Sir Francis Galton, father of eugenics

When Charles Darwin published his groundbreaking theory of Natural Selection in 1859, it was received by the public with considerable vexation. Although the esteemed naturalist had been kind enough to explain his theory using mounds of logic and evidence, he lacked the good manners to incorporate the readers' preconceived notions of the universe. Nevertheless, many men of science were drawn to the elegant hypothesis, and they found it pregnant with intriguing corollaries. One of these was a phenomenon Darwin referred to as artificial selection: the centuries-old process of selectively breeding domestic animals to magnify desirable traits. This, he explained, was the same mechanism as natural selection, merely accelerated by human influence.

In 1865, Darwin's half-cousin Sir Francis Galton pried the lid from yet another worm-can with the publication of his article entitled "Hereditary Talent and Character." In this essay, the gentleman-scientist suggested that one could apply the principle of artificial selection to humans just as one could in domestic animals, thereby exaggerating desirable human traits over several generations. This scientific philosophy would come to be known as eugenics, and over the subsequent years its seemingly sensible insights gained approval worldwide. In an effort to curtail the genetic pollution created by "inferior" genes, some governments even enacted laws authorizing the forcible sterilization of the "insane, idiotic, imbecile, feebleminded or epileptic," as well as individuals with criminal or promiscuous inclinations. Ultimately hundreds of thousands of people were forced or coerced into sterilization worldwide, over 65,000 of them in the country which pioneered the eugenic effort: The United States of America.

From the beginning, Sir Francis Galton and his league of extraordinary eugenicists were concerned that the human race was facing an inevitable decline. They worried that advances in medicine were too successful in improving the survival and reproduction of weak individuals, thereby working at odds with natural evolution. Darwin himself expressed some concern regarding such negative selection:

"[We] do our utmost to check the process of elimination. We build asylums for the imbecile, the maimed and the sick; we institute poor-laws; and our medical men exert their utmost skill to save the life of every one to the last moment. [...] Thus the weak members of civilized societies propagate their kind. No one who has attended to the breeding of domestic animals will doubt that this must be highly injurious to the race of man. [...] Nor could we check our sympathy, even at the urging of hard reason, without deterioration in the noblest part of our nature."

Gaussian distribution of IQ scores in a large population

The early proponents of eugenics were also distressed over the observation that the poor segments of an industrialized society tend to have more children than the well-off, an effect now known as the demographic-economic paradox. It was feared that this lopsided fertility would dilute the quality of the human gene pool, leading to the deterioration of socially valuable traits such as intelligence. Indeed, this "reversion towards mediocrity" was suspected by some historians to be a major contributor to the fall of the Roman Empire. The gloomy prediction of mankind's decline was dubbed dysgenics, and it was considered to be the antithesis of the eugenics movement; but it was not considered inevitable. It was believed that a society could reverse its own genetic decay by reducing breeding among the feebleminded and increasing fertility of the affluent.

The cornerstone of eugenics was that everyone has the right to be "well-born," without any predisposition to avoidable genetic flaws. The 1911 edition of The Encyclopdia Britannica looked fondly upon the philosophy, defining it as "the organic betterment of the race through wise application of the laws of heredity." Prominent people gravitated towards the idea and engaged in vigorous intellectual intercourse, including such characters as Alexander Graham Bell, Nikola Tesla, H.G. Wells, Winston Churchill, George Bernard Shaw, and US presidents Woodrow Wilson and Calvin Coolidge. Supporters popularized eugenics as an opportunity to create a better world by using natural processes to elevate the human condition, both mentally and physically.

The eugenicists' concerns regarding a falloff in average intelligence were not entirely unreasonable. It had long been observed that intelligence is inheritable to a large degree, and history had illustrated that science and culture owe much of their advancement to the contributions of a few gifted people. Ingenious composers such as Beethoven and Bach advanced the art of music, thinkers such as such as Pascal and Newton improved the power of mathematics, and insights from scientists such as Einstein and Hawking have furthered the field of physics. Deprived of any one of those men, today's world would be a measurably poorer place. Even before modern IQ tests existed, it was evident that a population's intelligence adheres to a Gaussian distribution, or "bell curve." Consequently, even a small decline in average IQ causes a sharp reduction in the number of geniuses. For instance, if the average intelligence of a community were to decline by five IQ points, the number of individuals in the 130+ "Gifted" category would drop by 56%. A ten-point decline would result in an 83% drop. Although IQ testing is far from perfect, it is clear that even modest erosion of average IQ could severely compromise the long-term progress of a society.

The archives room of the Eugenics Records Office

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Eugenics and You Damn Interesting