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01 / 05
Heroes of Progress, Pt. 34: Alan Turing

Blog Post | Computing

Heroes of Progress, Pt. 34: Alan Turing

Introducing the cryptanalyst whose work helped to shorten WWII.

Today marks the 34th installment in a series of articles by HumanProgress.org titled Heroes of Progress. This bi-weekly column provides a short introduction to heroes who have made an extraordinary contribution to the well-being of humanity. You can find the 33rd part of this series here.

This week, our hero is Alan Turing – an English mathematician, computer scientist and cryptanalyst, who is best known for his contributions to the field of computer science and for developing a machine that cracked the Nazis’ “Enigma” code during World War II. The Enigma machine was an enciphering device that was used extensively by the Nazi forces in WWII to send messages securely. Turing’s work in creating a machine that could break the encrypted German messages meant that Allied forces had a huge advantage during the war. Some historians have estimated that thanks to Turing’s work, WWII was shortened by at least 2 to 3 years. By cutting the war short, Turing’s work likely saved millions of lives.

Alan Turing was born on June 23, 1912 in London, United Kingdom. At a young age, Turing displayed signs of high intelligence and after enrolling at Sherborne School at the age of 13, he developed a passion for mathematics and science. In 1931, Turing was accepted to study at the University of Cambridge, and three years later he graduated with first-class honors in mathematics. The University of Cambridge was so impressed with Turing’s work that, aged just 22, he was elected a fellow of King’s College, Cambridge.

In 1936, Turing published a seminal paper “On Computable Numbers, with an Application to the Entscheidungsproblem” [i.e., decision problem]. In that paper, Turing presented the idea of a universal machine (later called the “Turing machine”) which could solve complex calculations. Many consider Turing’s paper as a foundational work in the field of computer science and artificial intelligence, as it foreshadowed how a modern digital computer could work.

That same year, Turing moved to New Jersey to study for a Ph.D in mathematics at Princeton University. Turing graduated with his Ph.D. in just two years and returned to his fellowship at Cambridge in 1938. A few months later, Turing was asked to join the Government Code and Cypher School (GCCS) – a British code-breaking organization. With the outbreak of WWII in September 1939, Turing moved to the GCCS’ wartime headquarters at Bletchley Park, Buckinghamshire.

A few weeks before Britain declared war on Germany, the Polish government gave the British government the details of their work on cracking the German Enigma machine. Although the Polish intelligence had some success in cracking the Enigma code, at the outbreak of the war, the Nazis increased the machine’s security and began to change the cipher daily. That meant that Turing and his team had just 24 hours to crack the Enigma code and translate the content of the messages, before cipher was changed again.

Turing played a key role in creating a machine known as the ‘Bombe.” That device helped to significantly reduce the work involved in cracking the Enigma code and by mid-1940, the Luftwaffe communications were being read at Bletchley Park.

Once the German Air Force communications had been cracked, Turing turned his attention to decrypting the more complex German naval communications. This work was of vital importance because German U-boats were destroying many cargo ships loaded with essential supplies that were sent from North America to Britain. So many supply ships were being destroyed that Churchill’s analysts calculated that Britain would soon be starving.

Thankfully, by 1941, Turing personally cracked the different form of Enigma code that was being used by the German U-boats. With the U-boats revealing their positions in their communications with one another, Allied cargo ships could be diverted away from the “wolfpacks” of Nazi submarines. After WW2, Churchill confessed that “the only thing that ever really frightened me during the war was the U-boat peril.”

Many historians agree that if Turing had not cracked the German Naval Enigma code, the Allied invasion of Europe (i.e., the D-Day landings) would have likely been delayed by at least a year. Any delay in invading mainland Europe would have enabled the Germans to strengthen their coastal defenses and prolong the time it took the Allied forces to reach Berlin.

After the war ended in 1945, Turing was awarded an OBE (Order of the British Empire) for his services to the country and he moved to London to work for the National Physical Laboratory. During his time in London, Turing led the design work on the “Automatic Computing Engine,” the world’s first stored-program computer. Although the complete version of Turing’s design was never built, the adapted concept significantly influenced the design of the English Electric DUECE and the American Bendix G-15 – the world’s first personal computers.

In 1952, Turing was prosecuted for homosexual acts after the police discovered that he had been in a sexual relationship with a man. To avoid prison, Turing agreed to undergo chemical castration through a series of synthetic estrogen injections. As a result of his conviction, Turing’s security clearance was revoked, and he was barred from continuing his work with cryptography at GCCS, which had become Government Communications Headquarters or GCHQ in 1946.

Angered by being shunned from the field that he had revolutionized, Turing committed suicide in 1954, aged 41. The immense legacy of Turing’s life did not fully come to light until the 1970s, when the secret work done at Bletchley Park was declassified.

Turing’s impact on computer science is celebrated by the annual “Turing Award,” which is the highest accolade in the field of computing. In 1999, Time magazine named Turing as one of the “100 Most Important People of the 20th Century.”

In December 2013, Queen Elizabeth II formally pardoned Turing. In January 2017, the British government enacted “Turing’s Law,” which posthumously pardoned thousands of gay and bisexual men who were convicted under historic legislation that outlawed homosexual acts.

Turing is often considered the “Father of Computer Science” for his work in conceptualizing the world’s first personal computer. If that achievement weren’t enough, Turing’s contribution to cracking the German Enigma code at Bletchley Park is also credited with shortening WWII by several years, which saved millions of lives. For those reasons, Alan Turing is deservedly our 34th Hero of Progress.

Human Rights Watch | Interstate Conflict

Cluster Munitions: Peru Destroys Stockpiled Weapons

“Peru’s destruction of its stocks of cluster munitions is a major milestone for the international treaty banning the weapons, Human Rights Watch said today. Peru was the last state party to complete this crucial obligation, highlighting the global rejection of cluster munitions, even as countries that have not joined the Convention on Cluster Munitions continue to use, produce, and transfer them.”

From Human Rights Watch.

New York Times | Interstate Conflict

Greece and Turkey, Long at Odds, Vow to Work Together Peacefully

“After years of tensions between Greece and Turkey, the countries’ leaders signed a ‘declaration on friendly relations and good neighborliness’ on Thursday, in what they described as a bid to set the two neighboring, rival nations on a more constructive path. The eventual goal, they said, was to resolve longstanding differences, which in recent decades have brought them to the brink of military conflict.”

From New York Times.

Blog Post | Wellbeing

Is This the Best Time to Be Alive?

Overwhelming evidence shows that we are richer, healthier, better fed, better educated, and even more humane than ever before.

Imagine, if you will, the following scenario. It is 1723, and you are invited to dinner in a bucolic New England countryside, unspoiled by the ravages of the Industrial Revolution. There, you encounter a family of English settlers who left the Old World to start a new life in North America. The father, muscles bulging after a vigorous day of work on the farm, sits at the head of the table, reading from the Bible. His beautiful wife, dressed in rustic finery, is putting finishing touches on a pot of hearty stew. The son, a strapping lad of 17, has just returned from an invigorating horse ride, while the daughter, aged 12, is playing with her dolls. Aside from the antiquated gender roles, what’s there not to like?

As an idealized depiction of pre-industrial life, the setting is easily recognizable to anyone familiar with Romantic writing or films such as Gone with the Wind or the Lord of the Rings trilogy. As a description of reality, however, it is rubbish; balderdash; nonsense and humbug. More likely than not, the father is in agonizing and chronic pain from decades of hard labor. His wife’s lungs, destroyed by years of indoor pollution, make her cough blood. Soon, she will be dead. The daughter, the family being too poor to afford a dowry, will spend her life as a spinster, shunned by her peers. And the son, having recently visited a prostitute, is suffering from a mysterious ailment that will make him blind in five years and kill him before he is 30.

For most of human history, life was very difficult for most people. They lacked basic medicines and died relatively young. They had no painkillers, and people with ailments spent much of their lives in agonizing pain. Entire families lived in bug-infested dwellings that offered neither comfort nor privacy. They worked in the fields from sunrise to sunset, yet hunger and famines were common. Transportation was primitive, and most people never traveled beyond their native villages or nearest towns. Ignorance and illiteracy were rife. The “good old days” were, by and large, very bad for the great majority of humankind. Since then, humanity has made enormous progress—especially over the course of the last two centuries.

How much progress?

Life expectancy before the modern era, which is to say, the last 200 years or so, was between ages 25 and 30. Today, the global average is 73 years old. It is 78 in the United States and 85 in Hong Kong.

In the mid-18th century, 40 percent of children died before their 15th birthday in Sweden and 50 percent in Bavaria. That was not unusual. The average child mortality among hunter-gatherers was 49 percent. Today, global child mortality is 4 percent. It is 0.3 percent in the Nordic nations and Japan.

Most of the people who survived into adulthood lived on the equivalent of $2 per day—a permanent state of penury that lasted from the start of the agricultural revolution 10,000 years ago until the 1800s. Today, the global average is $35—adjusted for inflation. Put differently, the average inhabitant of the world is 18 times better off.

With rising incomes came a massive reduction in absolute poverty, which fell from 90 percent in the early 19th century to 40 percent in 1980 to less than 10 percent today. As scholars from the Brookings Institution put it, “Poverty reduction of this magnitude is unparalleled in history.”

Along with absolute poverty came hunger. Famines were once common, and the average food consumption in France did not reach 2,000 calories per person per day until the 1820s. Today, the global average is approaching 3,000 calories, and obesity is an increasing problem—even in sub-Saharan Africa.

Almost 90 percent of people worldwide in 1820 were illiterate. Today, over 90 percent of humanity is literate. As late as 1870, the total length of schooling at all levels of education for people between the ages of 24 and 65 was 0.5 years. Today, it is nine years.

These are the basics, but don’t forget other conveniences of modern life, such as antibiotics. President Calvin Coolidge’s son died from an infected blister, which he developed while playing tennis at the White House in 1924. Four years later, Alexander Fleming discovered penicillin. Or think of air conditioning, the arrival of which increased productivity and, therefore, standards of living in the American South and ensured that New Yorkers didn’t have to sleep on outside staircases during the summer to keep cool.

So far, I have chiefly focused only on material improvements. Technological change, which drives material progress forward, is cumulative. But the unprecedented prosperity that most people enjoy today isn’t the most remarkable aspect of modern life. That must be the gradual improvement in our treatment of one another and of the natural world around us—a fact that’s even more remarkable given that human nature is largely unchanging.

Let’s start with the most obvious. Slavery can be traced back to Sumer, a Middle Eastern civilization that flourished between 4,500 BC and 1,900 BC. Over the succeeding 4,000 years, every civilization at one point or another practiced chattel slavery. Today, it is banned in every country on Earth.

In ancient Greece and many other cultures, women were the property of men. They were deliberately kept confined and ignorant. And while it is true that the status of women ranged widely throughout history, it was only in 1893 New Zealand that women obtained the right to vote. Today, the only place where women have no vote is the Papal Election at the Vatican.

A similar story can be told about gays and lesbians. It is a myth that the equality, which gays and lesbians enjoy in the West today, is merely a return to a happy ancient past. The Greeks tolerated (and highly regulated) sexual encounters among men, but lesbianism (women being the property of men) was unacceptable. The same was true about relationships between adult males. In the end, all men were expected to marry and produce children for the military.

Similarly, it is a mistake to create a dichotomy between males and the rest. Most men in history never had political power. The United States was the first country on Earth where most free men could vote in the early 1800s. Prior to that, men formed the backbone of oppressed peasantry, whose job was to feed the aristocrats and die in their wars.

Strange though it may sound, given the Russian barbarism in Ukraine and Hamas’s in Israel, data suggests that humans are more peaceful than they used to be. Five hundred years ago, great powers were at war 100 percent of the time. Every springtime, armies moved, invaded the neighbor’s territory, and fought until wintertime. War was the norm. Today, it is peace. In fact, this year marks 70 years since the last war between great powers. No comparable period of peace exists in the historical record.

Homicides are also down. At the time of Leonardo Da Vinci, some 73 out of every 100,000 Italians could expect to be murdered in their lifetimes. Today, it is less than one. Something similar has happened in Belgium, the Netherlands, Switzerland, Germany, Scandinavia, and many other places on Earth.

Human sacrifice, cannibalism, eunuchs, harems, dueling, foot-binding, heretic and witch burning, public torture and executions, infanticide, freak shows and laughing at the insane, as Harvard University’s Steven Pinker has documented, are all gone or linger only in the worst of the planet’s backwaters.

Finally, we are also more mindful of nonhumans. Lowering cats into a fire to make them scream was a popular spectacle in 16th century Paris. Ditto bearbaiting, a blood sport in which a chained bear and one or more dogs were forced to fight. Speaking of dogs, some were used as foot warmers while others were bred to run on a wheel, called a turnspit or dog wheel, to turn the meat in the kitchen. Whaling was also common.

Overwhelming evidence from across the academic disciplines clearly shows that we are richer, live longer, are better fed, and are better educated. Most of all, evidence shows that we are more humane. My point, therefore, is a simple one: this is the best time to be alive.

The Human Progress Podcast | Ep. 25

Maria Chaplia: An Update on Ukraine

Ukrainian lawyer and economist Maria Chaplia joins Chelsea Follett to discuss the ongoing war in Ukraine.