Ken Alder

The story of the creation of the metric system in 1792 traces the endeavors of Delambre and Mechain, the backlash of superstitious contemporaries, and the mistake that drove Mechain to the brink of madness.

The Seven-Year Odyssey and Hidden Error That Transformed the World

The Measure of All Things

de zevenjarige zoektocht naar de universele meter

De maat van alle dingen

The History of an American Obsession

The Lie Detectors

In June 1792, amidst the chaos of the French Revolution, two intrepid astronomers set out in opposite directions on an extraordinary journey. Starting in Paris, Jean-Baptiste-Joseph Delambre would make his way north to Dunkirk, while Pierre-François-André Méchain voyaged south to Barcelona. Their mission was to measure the world, and their findings would help define the meter as one ten-millionth of the distance between the pole and the equator—a standard that would be used “for all people, for all time.” The Measure of All Things is the astonishing tale of one of history’s greatest scientific adventures. Yet behind the public triumph of the metric system lies a secret error, one that is perpetuated in every subsequent definition of the meter. As acclaimed historian and novelist Ken Alder discovered through his research, there were only two people on the planet who knew the full extent of this error: Delambre and Méchain themselves. By turns a science history, detective tale, and human drama, The Measure of All Things describes a quest that succeeded as it failed—and continues to enlighten and inspire to this day.

The story of the lie detector takes us straight into the dark recesses of the American soul. It also leads us on a noir journey through some of the most storied episodes in American history. That is because the device we take for granted as an indicator of guilt or innocence actually tells us more about our beliefs than about our deeds. The machine does not measure deception so much as feelings of guilt or shame. As Ken Alder reveals in his fascinating and disturbing account, the history of the lie detector exposes fundamental truths about our culture: why we long to know the secret thoughts of our fellow citizens; why we believe in popular science; and why America embraced the culture of "truthiness." For centuries, people searched in vain for a way to unmask liars, seeking clues in blushing cheeks, shifty eyes, and curling toes...all the body's outward signs. But not until the 1920s did a cop with a Ph.D. team up with an entrepreneurial high school student from Berkeley, California and claim to have invented a foolproof machine that peered directly into the human heart. In a few short years their polygraph had transformed police work, seized headlines, solved sensational murders, and enthralled the nation. In Chicago, the capital of American vice, the two men wielded their device to clean up corruption, reform the police, and probe the minds of infamous killers. Before long the lie detector had become the nation's "mechanical conscience," searching for honesty on Main Street, in Hollywood, and even within Washington, D.C. Husbands and wives tested each other's fidelity. Corporations tested their employees' honesty. Movie studios and advertisers tested their audiences' responses. Eventually, thousands of government employees were tested for their loyalty and "morals" -- for lack of which many lost their jobs. Yet the machine was flawed. It often was used to accuse the wrong person. It could easily be beaten by those who knew how. Repeatedly it has been applied as an instrument of psychological torture, with the goal of extracting confessions. And its creators paid a commensurate price. One went mad trying to destroy the Frankenstein's monster he had created. The other became consumed by mistrust: jealous of his cheating wife, contemptuous of his former mentor, and driven to an early death. The only happy man among the machine's champions was the eccentric psychologist who went on to achieve glory as the creator of Wonder Woman. Yet this deceptive device took America -- and only America -- by storm. Today, the CIA still administers polygraphs to its employees. Accused celebrities loudly trumpet its clean bill of truth. And the U.S. government, as part of its new "war on terror," is currently exploring forms of lie detection that reach directly into the brain. Apparently, America still dreams of a technology that will render human beings transparent. The Lie Detectors is the entertaining and thought-provoking story of that American obsession.

Ken Alder

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