The Legacy of Scientific Genius Francis Galton is Overshadowed by Eugenics

Francis Galton, a 19th-century British polymath, could have been as renowned as his cousin, Charles Darwin. His obsession with quantifying and measuring everything led him to innovate in diverse fields such as meteorology, psychology, statistics, biometrics, forensics, and anthropology.

However, Galton's intellectual pursuits were marred by his fixation on applying Darwin's concept of natural selection and the idea of "survival of the fittest" to human society. Influenced by Victorian-era racial biases, he fervently advocated for selective breeding and introduced the term "eugenics."

Galton's theories led to the forced sterilization of those deemed "unfit" in later decades, including practices in the United States, and eventually influenced the atrocities of Nazi concentration camps.

A Victorian Man of Science

Galton's life can be split into two phases: his early years as an adventurer, travel author, and scientific pioneer, followed by his later fixation on eugenics after the publication of "On the Origin of Species."

Born in 1822, Galton was regarded as a prodigy. After completing his university education, his father passed away, bequeathing him a substantial inheritance from his industrialist grandfather. Liberated from financial concerns, Galton pursued his love for exploration and hunting, venturing to Egypt and the Holy Land. With the help of his cousin Darwin, he gained entry to the Royal Geographical Society, where he planned an extensive expedition to chart unknown regions of Africa.

Galton demonstrated exceptional skill in cartography during his African travels, showcasing the meticulous attention to detail that would define his career. However, his diplomatic efforts were less effective. After offering modest gifts to a tribal leader to secure passage through his territory, Galton was surprised to find the king's reciprocal gesture: a young woman adorned with butter and ochre dye, presented as a peace offering.

Galton had her "ejected with scant ceremony," as he described it, motivated less by morality and more by a fear of ruining his pristine white linen suit. He remarked that she was "as likely to leave a mark as a heavily inked printing roller." Unsurprisingly, the king promptly told Galton to leave.

Upon returning to London, Galton penned a widely-read narrative of his African adventures and authored practical guides for aspiring explorers. Soon after, he turned his attention to exploring various scientific fields still in their early stages.

His first scientific interest was meteorology. While modern weather forecasts may seem unreliable, they were far worse in the 1850s when The Times of London first started publishing weather predictions. Galton tackled the issue as he did with many others: by gathering and analyzing data.

In 1861, he established a network where meteorologists across Europe recorded weather data — including temperature, wind speed, direction, and barometric pressure — three times daily at synchronized times over a month. Galton analyzed this data to identify patterns, leading to his discovery of the "anticyclone."

One of Galton's most significant contributions to meteorology was the creation of early weather maps, featuring wind speed arrows, temperature indicators, and basic symbols for rain and sunshine.

Some of Galton's early setbacks eventually turned into remarkable achievements. In 1864, he and other prominent Victorians founded a weekly scientific journal titled The Reader, which ceased publication after two years. However, a few years later, other collaborators revived the journal under the name Nature, which has since become one of the most prestigious scientific journals globally.

Darwin Changes Everything

The publication of Darwin's "On the Origin of Species" in 1859 had an immense impact on both science and society. Galton was captivated by his cousin's theory of natural selection and even more so by Herbert Spencer's concept of "survival of the fittest" and the emerging ideology of "social Darwinism." According to this logic, the wealthy white elite were naturally the fittest, while the poor and nonwhite populations were deemed less capable of surviving.

Galton was determined to find evidence that desirable and undesirable human traits were passed down through generations. To do this, he studied the genealogies of "great men" — including scientists, writers, judges, and statesmen — and gathered data on the shared traits among fathers, sons, and grandsons. Reflecting the biases of the mid-19th century, women were entirely excluded from his research.

In his 1869 book "Hereditary Genius," Galton concluded that greatness was hereditary. Despite overlooking the educational and social privileges of the elite and the biased nature of his questionnaires, Galton's work was groundbreaking. He was the first to use family trees and surveys to study inherited traits, laying the foundation for future research in genetics.

"Hereditary Genius" received a mixed response. Nature offered a somewhat favorable review, while Darwin enthusiastically praised it. However, critics argued that inherited "nature" alone wasn't the sole determinant of one's abilities or social standing. They emphasized the importance of life experiences and educational opportunities, collectively referred to as "nurture."

"Universal literacy, numeracy, and the eradication of poverty would elevate the nation's overall ability far more effectively than any selective breeding system," wrote The Times.

Statistics, Twins and Fingerprints

To counter his critics and demonstrate the supremacy of nature over nurture, Galton returned to his strength: gathering empirical data. In one study, he asked 205 families to report the heights of parents and their children. Plotting the data, he observed that tall parents' children were generally slightly shorter, while short parents' children tended to be taller, on average.

Galton replicated the experiment using sweet peas and observed the same pattern. Seeds from larger plants produced peas that were smaller, not larger, on average than the parent seeds. This led to his discovery of the statistical principle "regression to the mean," and he even formulated the regression coefficient. This achievement alone cemented Galton's status as a pioneer in biological statistics.

In another brilliant move, Galton recognized that studying identical twins separated at birth and raised in vastly different environments was the ideal way to demonstrate the enduring power of heredity. If these twins showed similarities in health, personality, and accomplishments, it would confirm his theory.

Although Galton struggled to find separated identical twins, he conducted some of the earliest twin studies in scientific history. In an 1875 paper, he documented 94 pairs of twins who exhibited remarkable similarities not only in looks but also in preferences and temperament. While his conclusions were biased toward his hypothesis, this pioneering twin study became the foundation for modern behavioral genetics research.

Galton also left a lasting impact on forensic science. While others had contributed to fingerprinting, it was Galton who persuaded Scotland Yard to adopt the method. Through extensive data collection and analysis, he proved that fingerprints are unique and unchanging throughout a person's life. Additionally, he developed the fingerprint classification system, categorizing prints into arches, loops, and whorls.

From Social Darwinism to Sterilization

Unfortunately, Galton's scientific achievements are largely overshadowed by his unwavering commitment to eugenics, which he defined as "the scientific study of biological and social factors that enhance or diminish the innate qualities of individuals and future generations."

Galton introduced the term eugenics in 1883, but he had been envisioning a eugenic utopia since at least a decade earlier. In an 1873 article for Fraser's Magazine, he painted a picture of a future where the genetically superior were encouraged by the state to reproduce, while those deemed "unfit" were prevented from having children. In an earlier letter to The Times, he even suggested that Africa should be handed over to the Chinese, claiming it would be "immensely beneficial" if the Chinese were to "outbreed and eventually replace" the African population.

It's worth noting that Galton's views were not unique in his time, as discussions of superior and inferior "stock" were widespread in the Victorian era, fueled by racism and classism. When Galton delivered a lecture on eugenics in 1904, leading intellectuals were invited to respond. H.G. Wells initially expressed skepticism, arguing that measuring genetic superiority was too complex. However, he concluded with a startling statement:

"Nature's way has always been to eliminate the weakest, and unless we can stop the weakest from being born, there is no alternative," wrote Wells. "The key to improving humanity lies not in selecting the best for breeding but in sterilizing those deemed failures."

Yikes.

Tragically, some of Galton's most harmful ideas were implemented. This occurred not only in Nazi Germany, where millions of people considered genetically or racially "unfit" — including the disabled, mentally ill, homosexuals, Romani, and Jews — were systematically murdered, but also in the United States. The U.S. has a dark history of forced sterilization programs targeting Mexican-Americans, African Americans, Native Americans, as well as criminals and the mentally ill.

Galton was honored with numerous accolades, including a knighthood in 1909. He passed away in 1911 without any children (his wife of 43 years had died in 1897). Ironically, he witnessed the early stages of Britain's welfare state, which introduced pensions for the elderly and free school meals, initiatives aimed at supporting the most vulnerable and rejecting a eugenics-driven future.