A Brief History of Deep Blue, IBM's Chess Computer

Stan Honda // AFP // Getty Images
Stan Honda // AFP // Getty Images

On July 29, 1997, IBM researchers were awarded a $100,000 prize that had gone unclaimed for 17 years. It was the Fredkin Prize, created by Carnegie Mellon University (CMU) professor Edward Fredkin in 1980. An artificial intelligence pioneer, Fredkin challenged fellow computer scientists to create a computer that could beat the best human chess player in the world. That's exactly what Deep Blue did in May, 1997.

It was an extremely long road to victory. After Fredkin's initial challenge in 1980, a team from Bell Labs created a chess computer in 1981 that beat a chess master. In 1985, Feng-hsiung Hsu created ChipTest, a chess computer that set the stage for later efforts.

By 1988, a CMU team including Hsu created a system that beat an international master. That one was called "Deep Thought," named for the computer in The Hitchhiker's Guide to the Galaxy—a fictional computer spent 7.5 million years calculated "the Answer to The Ultimate Question of Life, the Universe, and Everything." (That answer, of course, was 42.)

Deep Thought underwent additional development at IBM, and in 1989 it went head-to-head with Garry Kasparov, who is widely considered the best chess player of all time. Kasparov destroyed the machine in a two-game match. Here's the first part of a documentary about Deep Thought, which helps set the stage for Deep Blue:

Deep Thought eventually led to Deep Blue, an IBM project led by Hsu, along with his former Deep Thought collaborator Murray Campbell, among others.

The computer science problem of chess is deep. First the machine needs to understand the state of the board—that's relatively easy—but then it needs to predict future moves. Given that the 32 pieces on the board are capable of moving to a variety of other positions, the "possibility space" for the next move (and all subsequent moves) is very large.

In theory, a sufficiently beefy computer could simulate every possible move (and counter-move) in its memory, rank which moves end up doing best in each simulated game, and then perform the optimal move on each turn. But to actually implement a computer that powerful—and fast enough to compete in a time-limited tournament—was a matter of extreme effort. It took Hsu more than a decade to master it.

Six men pose with a chess board and timer. On one side of the board, a sign reads Garry Kasparov. On the other side, a computer keyboard and monitor represent Deep Blue.
The IBM Deep Blue chess computer team poses in May, 1997. From left: Chung-Jen Tan (team manager), Gerry Brody, Joel Benjamin, Murray Campbell, Joseph Hoane and Feng-hsiung Hsu (seated).
Stan Honda // AFP // Getty Images

On February 10, 1996 in Philadelphia, Deep Blue went head-to-head with Kasparov, and Kasparov beat the computer handily. Though Deep Blue scored one winning game and two draws, it lost three games to Kasparov outright. Deep Blue did set a record for winning that one game, but it needed the match to earn the Fredkin Prize.

By this point, Kasparov was used to destroying chess computers, and the media lapped it up—this was a man-versus-machine story for the ages. By May 1997, IBM had heavily upgraded Deep Blue (some called it "Deeper Blue") with vastly improved computing resources, preparing for a rematch. When that rematch came, Kasparov would face a worthy opponent.

On May 11, 1997 in New York City, the upgraded Deep Blue entered the match with a large, excited audience. Kasparov won the first game, but Deep Blue took the second, tying the players. Then came three games that ended in draws. In the sixth game, Kasparov made a mistake in the opening. Deep Blue won that sixth game quickly, winning the match, much to the astonishment of the crowd. Kasparov asked for a rematch. The Deep Blue team declined.

Kasparov claimed to have perceived a human hand in Deep Blue's play. Kasparov wondered whether a human chess player was somehow feeding the computer moves, much like the infamous Mechanical Turk of yore. Various conspiracy theories flourished, but came to nothing.

When the Fredkin Prize was awarded to Hsu, Campbell, and IBM researcher A. Joseph Hoane Jr., Fredkin told reporters, "There has never been any doubt in my mind that a computer would ultimately beat a reigning world chess champion. The question has always been when." Hsu told The New York Times, "Some people are apprehensive about what the future can bring. But it's important to remember that a computer is a tool. The fact that a computer won is not a bad thing."

The Lavender Scare: When the U.S. Government Persecuted Employees for Being Gay

President Dwight Eisenhower circa 1959
President Dwight Eisenhower circa 1959
Central Press/Hulton Archive/Getty Images

Many people have heard of the Red Scare, an episode of persecution of suspected communists in the 1940s and 1950s, but they’re less familiar with a scare of a different hue. Over the same period, and into the 1990s, officials investigated and fired government employees for being gay or lesbian—a phenomenon that has become known as the “Lavender Scare.”

Thousands of people were pushed out of government jobs, whether they worked at the State Department or other agencies, as federal contractors, or in the military, because of their perceived sexuality—and, in some cases, because of guilt by association. Most remain anonymous, part of a chapter in LGBTQ history that is frequently ignored.

"The Pervert File"

The Lavender Scare was the product of a perfect storm of circumstances. During the Great Depression and World War II, many gays and lesbians left their rural communities in search of opportunities elsewhere, including in Washington, D.C. Government jobs provided excellent pay and benefits, and in a city, people could build community. But trouble lay ahead.

The first rumblings began in 1947, when the U.S. Park Police instituted a “Sex Perversion Elimination Program” explicitly targeting gay men in Washington, D.C. public parks for harassment. Patrols focused on Lafayette and Franklin Parks, where any men deemed suspicious could be picked up regardless of their intentions. Men were arrested and intimidated, pushed to pay fines to resolve their arrests and go home—but not before their information, including fingerprints and photographs, was collected for inclusion in a “pervert file.” By February 1950, 700 men had been apprehended, 200 of whom were arrested. According to historian David K. Johnson in his book The Lavender Scare, the typical detainee was a 25-year-old government clerk.

The parks program appeared against the backdrop of “sexual psychopath” laws. Passed across the country starting in the 1930s, these laws criminalized LGBTQ people and promoted forcible treatment [PDF] for their sexual expression, which was viewed as a mental disorder. Nebraska Republican Arthur Miller, who authored D.C.’s now-repealed “sexual psychopath” law in 1948, became one of the most vitriolic individuals in attacking gay federal employees: “There are places in Washington where they gather for the purpose of sex orgies, where they worship at the cesspool and flesh pots of iniquity,” Miller said in a blisteringly homophobic floor speech in early 1950.

Miller wasn't the only one speaking out about the perceived menace. In his now-infamous speeches on the Senate floor in February 1950, Senator Joseph McCarthy explicitly linked communism and homosexuality, arguing that LGBTQ people were particularly susceptible to communist recruitment because of their "peculiar mental twists."

McCarthy's speeches—and a revelation by deputy undersecretary of state John Peurifoy that the State Department had recently fired 91 employees for being gay—led to a public outcry. Within a month of McCarthy taking to the Senate floor, a Congressional investigation led by senators Kenneth Wherry and J. Lister Hill laid the groundwork for hearings on the issue. Those ultimately resulted in a bipartisan December 1950 report: “Employment of homosexuals and other sex perverts in government,” led by Democratic senator Clyde R. Hoey.

The report, which drew upon extensive interviews with federal agencies and the military, concluded that gay people should not be employed by the government because they were "generally unsuitable" and because they constituted a security risk. The unsuitability was said to stem from the fact that "overt acts of sex perversion" were a crime under federal and local laws, as well as the assertion that "persons who engage in such activity are looked upon as outcasts by society generally." Furthermore, the report said, gay people "lack the emotional stability of normal persons" and "indulgence in acts of sex perversion weakens the moral fiber of an individual to a degree that he is not suitable for a position of responsibility." This lack of moral fiber was said to make gay people, who might be blackmailed for their activities, particularly "susceptible to the blandishments of the foreign espionage agent."

In a callback to the park stings of the 1940s, the report successfully recommended changes to D.C. criminal procedure that forced men suspected of “perversion” into court when they were caught by law enforcement, effectively outing them. The report also pushed government entities to develop clear policies and procedures for terminating gay and lesbian employees—a recommendation that would have tremendous consequences.

"As Dangerous as the Communists"

Kenneth Wherry
Kenneth Wherry
Harris & Ewing, Wikimedia Commons // Public Domain

The government seized on the idea that being gay was a security risk. As Senator Wherry put it, "Only the most naive could believe that the Communists' fifth column in the United States would neglect to propagate and use homosexuals to gain their treacherous ends." In a 1950 newsletter, Republican National Chair Guy George Gabrielson cited “sexual perverts” as a government peril that was "perhaps as dangerous as the actual communists" [PDF].

Inspired in part by the Hoey Report, President Dwight Eisenhower signed executive order 10450 in 1953, listing “sexual perversion” as grounds for identifying someone as a security risk. The document made it possible to aggressively pursue people like Airman Second Class Helen Grace James. James has described being followed and watched during her days in the Air Force, even during activities as innocent as eating a sandwich with a friend or going to the bathroom. The feeling of constant scrutiny affected her mental health and her sleep. "We were scared all the time," she told the Criminal podcast.

Once James was arrested in 1955, the Army threatened to go to her parents and friends with news of her sexuality, saying James was "a threat to the nation and a bad person," she explained to Criminal. "I finally said, just write down whatever you want to write down and I'll sign it."

After being discharged, James fled the East Coast. "[I] had no money, no support at all. I couldn't tell my family, I couldn't tell my friends," she said. "I had hoped to make a career of the Air Force, I loved it." Being kicked out of the Air Force, she felt, was a stain on her military family. She fought for years to change her undesirable discharge to an honorable one; she was finally successful in 2018.

James suffered in silence for years, but Frank Kameny took his case all the way to the Supreme Court. In 1957, he was fired from his job as an astronomer with the Army Map Service for being gay. In his Supreme Court petition three years later, he called the government's policies on homosexuality “nothing more than a reflection of ancient primitive, archaic, obsolete taboos … an anachronistic relic of the Stone Age carried over into the Space Age—and a harmful relic!” His case may have been the first explicitly involving LGBTQ rights to make its way before the court, which denied his appeal. Kameny went on to become a prominent member of the gay rights movement, and was a founder of the Mattachine Society, an activist organization that collects and preserves important archival material related to LGBTQ history.

All in all, an estimated 10,000 people lost their jobs in the Lavender Scare. President Clinton effectively overturned parts of Executive Order 10450 in 1995, but the government didn't apologize for the discrimination until the administration of Barack Obama.

Fellow Travelers

Frank Kameny attending Pride on June 12, 2010
LGBTQ activist and Lavender Scare target Frank Kameny attending a Pride event in 2010

Although not a well-known period in history, The Lavender Scare has had a cultural afterlife. It was the subject of a 2017 documentary, and a key element of a 2007 novel, Fellow Travelers, which followed a youthful civil servant, a forbidden affair, and the terror of living a double life in 1950s Washington. The book was adapted into an opera first staged in 2016, complete with a set inspired by the overbearing style of 1950s brutalist architecture.

“The piece wants to memorialize those people whose lives were lost, or jobs were lost,” Peter Rothstein, who directed the Minnesota Opera production, tells Mental Floss. Many members of the LGBTQ community aren’t aware of the Lavender Scare, or don’t know about its full extent, something Rothstein discovered when he started to research in preparation for the production. “I thought I was kind of up on my queer history. I was like 'whoa!' The scope of it.”

While stereotypes about gay men and musical theater abound, Rothstein notes that musicals play an important role in America’s cultural history and climate. Many recent works, including Lin-Manuel Miranda’s Hamiltonhave explored historical and cultural identity—and with Fellow Travelers, Rothstein says, the medium was particularly apt. “There’s a huge subtext of men not able to articulate for themselves, because they haven’t really been given language to describe their emotional, sexual specificity," he explained.

This neglected piece of queer history reflects a time when shame kept many people silent. Thankfully, historians such as Johnson are collecting stories before survivors of this generation fade away. As they uncover more tales of careers—and lives—ruined, perhaps the Lavender Scare will begin to take on more of a role in mainstream history books.

Periodic Table Discovered at Scotland's St Andrews University Could Be World's Oldest

Alan Aitken
Alan Aitken

The oldest surviving periodic table of elements in the world may have been found at the University of St Andrews in Scotland, according to the Scottish newspaper The Courier.

University researchers and international experts recently determined that the chart, which was rediscovered in a chemistry department storage area in 2014, dates back to 1885—just 16 years after Russian chemist Dmitri Mendeleev invented the method of sorting the elements into related groups and arranging them by increasing atomic weight.

Mendeleev’s original periodic table had 60 elements, while the modern version we use today contains 118 elements. The chart found at St Andrews is similar to Mendeleev’s second version of the table, created in 1871. It’s thought to be the only surviving table of its kind in Europe.

The periodic table soaks in a washing treatment
Richard Hawkes

The St Andrews table is written in German, and was presumably produced for German universities to use as a teaching aid, according to St Andrews chemistry professor David O’Hagan. The item itself was dated 1885, but St Andrews researcher M. Pilar Gil found a receipt showing that the university purchased the table from a German catalog in 1888. A St Andrews chemistry professor at the time likely ordered it because he wanted to have the latest teaching materials in the scientific field, even if they weren't written in English.

When university staffers first found the table in 2014, it was in “bad condition,” O’Hagan tells The Courier in the video below. The material was fragile and bits of it flaked off when it was handled. Conservators in the university's special collections department have since worked to preserve the document for posterity.

The 19th century table looks quite a bit different from its modern counterparts. Although Mendeleev laid the groundwork for the periodic table we know today, English physicist Henry Moseley improved it in 1913 by rearranging the elements by the number of protons they had rather than their atomic weight. Then, in the 1920s, Horace Deming created the boxy layout we now associate with periodic tables.

Learn more about the St Andrews discovery in the video below.

[h/t The Courier]

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