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In the 1870s, taking a photograph meant hauling glass plates, toxic chemicals, and a dark tent into the field. George Eastman, a bank clerk from Rochester, found the equipment unbearable and began experimenting with dry plates in his mother's kitchen in 1880. This episode follows his progress from the Eastman Dry Plate Company to a roll holder, a paper film, and finally the transparent nitrocellul...

By January 2021, hedge funds had sold short roughly 140 percent of GameStop's public float, a number made possible because the same shares were lent out again and again. This episode explains how that structural trap was sprung. Michael Burry and Chewy co-founder Ryan Cohen took stakes in the struggling retailer, and Keith Gill, posting as Roaring Kitty, argued for months on Reddit's WallStreetBet...

The legend says that in 1949 Frank X. McNamara finished a meal at Major's Cabin Grill in New York City, reached for his wallet, and found his pocket empty. Mortified, he dreamed up a multipurpose charge card and pitched it the next day to his lawyer, Ralph Schneider, and his friend Alfred Bloomingdale. This episode examines that origin story, including the conflicting accounts of what happened and...

In 2017 the fidget spinner was sold to millions of parents as a tool that could ease anxiety, help with ADHD, and sharpen focus. This episode takes the toy apart, starting with the physics. A ball bearing at the center removes nearly all friction, while weighted lobes push mass outward, raising the moment of inertia and turning the spinner into a small handheld gyroscope. The result is a smooth gl...

Arthur E. Andersen was orphaned at 16, worked as a mail boy in Chicago, studied at night, and in 1908 became the youngest certified public accountant in Illinois. The firm he co-founded in 1913 rested on a motto inherited from his mother: think straight, talk straight. He insisted that an auditor's real boss is the public investor, not the company paying the fee, and he built the profession's firs...

Edwin H. Land left Harvard after his freshman year to chase one problem: how to control the direction of light. He solved it by embedding microscopic iodine crystals in stretched plastic, creating a polarizing sheet that cut glare. The company he founded in Cambridge, Massachusetts in 1937 sold that material as sunglasses, 3D movie glasses, goggles for military working dogs, and night viewing devi...

In December 2013, IBM software engineer Billy Markus and Adobe marketer Jackson Palmer built a cryptocurrency in a few hours to mock the speculation swirling around Bitcoin. They put a Shiba Inu meme and Comic Sans on a coin forked from Luckycoin, itself a fork of Litecoin. Because it could be mined on ordinary computers and confirmed transactions every minute, Dogecoin drew a million visitors to...

In 1827, Swiss Italian brothers Giovanni and Pietro Delmonico ran a modest pastry shop at 23 William Street in New York. This episode follows the 200 year life of what it became. Their nephew Lorenzo arrived in 1831 and transformed the business, scouring the markets at four in the morning and building a serious wine list. After the Great Fire of 1835 wiped out the family's properties, they opened...

Counterfeiting is often called the world's second oldest profession, and this episode traces it from Lydia around 600 BC, where plated fakes appeared almost as soon as coins did, to the security features in a modern wallet. Early forgers clipped the edges of coins or shook them in leather bags to collect gold dust. Rulers answered with savage penalties: decapitation in China, burning at the stake...

The popular story says Black Friday is the day retailers finally move from red ink to black. This episode shows that tale was invented in the early 1980s. The name actually came from police in Philadelphia and Rochester in the 1950s and 60s, who used it for the gridlock, smog, and crowds that hit downtown after Thanksgiving, made worse by the Army-Navy football game. Before that, the phrase marked...

The first great silver strike in American history was found by men who thought it was trash. Gold miners in the Virginia Range of present-day Nevada kept clogging their equipment with a heavy, sticky material they called the blue stuff. It was silver sulfide. This episode tells who really found it: the Grosh brothers, trained mineralogists who both died in 1857 before they could stake a claim, and...

In 1965, as the United States raced toward the moon, Martin Luther King Jr. met plantation workers in the Deep South who had never seen or held a piece of official American currency. They were paid in scrip, private money issued by an employer and good only at the employer's own store. This episode explains how a practical fix for remote logging and mining camps, where shipping cash was dangerous,...

The Pringles tube got narrower, the stack got shorter, and the price stayed the same. This episode examines shrinkflation, the practice that boardrooms call package downsizing or price pack architecture. Companies fear raising a sticker price because shoppers treat a price as a kind of social contract, an idea economists call the invisible handshake. So they shrink the product instead, guided by W...

In 11th century Sichuan, money was made of iron. The coins were cheap, heavy, and so low in value that a large purchase could require wagons and pack mules. Merchants in Chengdu found a way around the weight. They took deposits of iron coins and handed back paper promissory notes called jiaozi, which could be traded in place of the metal. This episode traces how those private receipts, at first is...

When the New York Times sealed a time capsule in the year 2000 to be opened in the year 3000, a Chia Pet went inside. This episode explains how a grooved terracotta figurine earned that place. The trick is botanical. Seeds of Salvia hispanica turn sticky when soaked, so they cling to curved clay, and the porous terracotta slowly feeds them water from a hollow center until a coat of green sprouts a...

A printer that costs 39 dollars is not a bargain. It is the first payment on years of ink. This episode examines the razor and blades business model, in which a company sells a base product cheaply, sometimes at a loss, because it is useless without a consumable only that company supplies. The story starts by correcting a legend. King Camp Gillette did not give away his razor handles. He sold them...

Asked by the Ottoman finance minister to survey the oil of Mesopotamia, a young engineer never left home. Calouste Gulbenkian read travel books, questioned railway engineers, and produced a report accurate enough to persuade the Sultan to buy the land. Born in Constantinople in 1869 to a wealthy Armenian family in the kerosene trade, he earned a first-class degree from King's College London at 18....

On the night of June 20, 1947, a gunman rested an M1 carbine on a trellis outside a Beverly Hills mansion and fired through the living room window, killing Benjamin Siegel as he read the Los Angeles Times. This episode traces how he got to that couch. Born around 1906 in Williamsburg, Brooklyn, to poor Jewish immigrants, he started by charging pushcart vendors a dollar not to burn their carts, the...

On July 9, 1896, inside a sweltering Chicago Coliseum, a 36-year-old former congressman from Nebraska sat eating a sandwich to settle his stomach. Minutes later William Jennings Bryan gave a speech that won him the Democratic nomination for president. This episode explains the anger behind it: the end of silver coinage in what critics called the Crime of 73, a deflation that crushed indebted farme...

In July 1944, a month after Normandy, delegates from 44 Allied nations gathered at the Mount Washington Hotel in New Hampshire to redesign the world's money. They were haunted by the 1930s, when unpayable war debts, competitive devaluations, and hostile trade blocs helped set the stage for war. This episode recounts the duel at the center of the conference, between Britain's John Maynard Keynes, w...

Rain Man made card counting look like a feat of photographic memory. The truth is plainer and harder. A counter tracks one thing only: the ratio of high cards to low cards left in the shoe. In the Hi-Lo system, twos through sixes count as plus one, tens, face cards, and aces as minus one, and sevens through nines as zero. This episode explains why a deck rich in tens and aces favors the player, an...

In 2008 an incoming president fought his own security agencies to keep his phone. That phone was a BlackBerry, built by Research In Motion of Waterloo, Ontario, a company that began with two-way pagers on a rugged data network called Mobitex. This episode follows the device from the BlackBerry 850 of 1999, with its thumb keyboard and push email, to a peak of 85 million users and a spot in the dict...

On September 16, 1992, the British government spent billions defending the pound, raised interest rates twice in a single day, and still lost. This episode explains how the United Kingdom walked into that trap. In October 1990 it joined the European Exchange Rate Mechanism at 2.95 Deutschmarks to the pound, with a hard floor of 2.773, tying a high inflation economy in recession to a disciplined Ge...

BitConnect launched in February 2016 with a pitch that sounded like a cheat code. Trade your Bitcoin for its own token, BCC, lock it up for four to ten months, and a secret trading bot would pay you 1 percent interest every single day. The bot never existed. New deposits paid old investors, a multi-level referral system turned victims into recruiters, and a closed internal exchange pushed BCC from...

In 2013 someone threw away a hard drive holding the private keys to 7,500 bitcoins, and no government, manufacturer, or hacker can ever get them back. That unforgiving design is the subject of this episode, which treats Bitcoin itself as the biography, since its pseudonymous creator Satoshi Nakamoto vanished from the internet in 2010. The story begins with the failed cypherpunk experiments that ca...