Phronesis
Mode IV · 66 ideas

The story behind…

Origins of things you see every day.

Code de Hammurabi, roi de Babylone ; face avant.
No. 054LawLaw

“An eye for an eye” was a step forward

Hammurabi’s 3,800-year-old law code sounds brutal, but it was an attempt to make punishment proportionate, public and predictable.

2 minc. 1754 BC
No. 123PersonArtificial Intelligence

“Can machines think?”: Turing’s 1950 question

Alan Turing opened a 1950 paper with that question, then replaced it with a test, and answered Ada Lovelace by name.

2 min1936 · 1950
Candles spelling "Happy Birthday"
No. 056StoryMusic

“Happy Birthday” was copyrighted until 2015

For decades, a company collected around $2 million a year in licensing fees for the world’s most-sung song. Then a court found the claim was never valid.

2 min1893 → 2015
Hedy Lamarr publicity photo for the film The Heavenly Body, 1944
No. 059PersonPeople

A Hollywood star patented a secret radio system

In 1942 the film actress Hedy Lamarr and the composer George Antheil patented a frequency-hopping system for guiding torpedoes. The Navy shelved it, but its principle lives on in modern wireless technology.

2 min1942
No. 121StoryMusic

A skateboard, a bottle of juice, and a 43-year-old hit

In 2020 a man skateboarded to work drinking cranberry juice and lip-syncing Fleetwood Mac. The video sent “Dreams”, released in 1977, back into the US Top 20.

2 min2020
No. 043StoryLiterature

A volcano gave us Frankenstein

A massive eruption in Indonesia in 1815 caused a cold, stormy summer in Switzerland, which kept a group of writers indoors telling ghost stories.

2 min1815–1818
No. 032EventArtificial Intelligence

AI got its name from a summer workshop proposal

In 1955 four researchers asked for funding for “a 2-month, 10-man study of artificial intelligence”, confident they could make a significant advance in one summer.

2 min1955–1956
No. 079StoryFashion & Trends

An 18-year-old’s failed medicine set off a fashion craze

In 1856 a student trying to make a malaria drug produced a purple stain instead, and within two years Europe was wearing mauve.

2 min1856–1858
No. 017Word originArchitecture

Brutalism isn’t named after being brutal

The architectural style people love to hate takes its name from the French for “raw concrete”.

1 min1950s
Caesar salad in Milestones restaurant in Yaletown, downtown Vancouver BC Canada
No. 020DishCuisine & Food

Caesar salad was invented in Mexico

It has nothing to do with Julius Caesar. It was improvised in Tijuana in the 1920s by an Italian-American restaurateur named Caesar Cardini.

1 min1924
No. 023ConceptLiterature

Chekhov’s gun: what the quote really said

Every writer knows the rule that a gun on the wall must go off. The sources say it was spread across three different remarks.

2 min1889–1911
No. 024ConceptPhilosophy

Chesterton’s fence: ask why it’s there before you tear it down

A 1929 essay gave us one of the most useful rules for anyone who wants to change something: understand it first.

2 min1929
Portrait en soie tissée de Jacquard
No. 064ObjectInventions

Computers began as looms

The first machine controlled by punched cards was not a calculator. It wove silk.

2 min1804
This posthumous portrait of Wolfgang Amadeus Mozart was painted by Barbara Krafft at the request of Joseph Sonnleithner in 1819, long after Mozart died. Sonnlei
No. 083PhenomenonMusic

Does listening to Mozart make you smarter?

A small 1993 experiment about spatial puzzles turned into the belief that Mozart makes babies clever. The science never said that.

2 min1993
No. 039Word originLanguage

Esperanto has native speakers

An invented language from 1887 has around a thousand people who grew up speaking it from birth, and both Hitler and Stalin persecuted it.

2 min1887
No. 040PersonMathematics

Fibonacci’s real legacy wasn’t the sequence

The rabbit puzzle made him famous, but Fibonacci’s real impact was teaching Europe to write numbers the way we do now.

2 min1202
No. 041DishCuisine & Food

Fortune cookies are Japanese, by way of California

You won’t find fortune cookies in China. They descend from a Kyoto cracker, reached America through Japanese immigrants, and were taken over by Chinese restaurants during World War II.

2 minearly 1900s
No. 033EventArtificial Intelligence

From a bedroom GPU to ChatGPT

In 2012 a neural network trained on two gaming graphics cards in a student’s bedroom crushed an image-recognition contest. Ten years later, chatbots built on the same lineage reached the public.

2 min2012 · 2017 · 2022
General Tso's Chicken on a bed of white rice with broccoli. Photographed in the Oakmore neighborhood of Oakland, California, USA.
No. 045DishCuisine & Food

General Tso’s chicken is unknown in General Tso’s home province

America’s favourite Chinese takeaway dish was invented in Taiwan, sweetened in New York, and was too sweet to sell in Hunan.

2 min1950s–1970s
No. 094StoryArtificial Intelligence

In 1958 the Navy said its neural network would one day be conscious

The first trainable neural network, the perceptron, was announced as the embryo of a computer that would “walk, talk, see, write, reproduce itself and be conscious of its existence”.

2 min1958
Typical home made Japanese curry rice with beef, onions, carrots and potatoes.
No. 066DishCuisine & Food

Japan learned curry from the British Navy

Japanese curry came from India by way of the British, was adopted by the Japanese navy to fight a deadly vitamin deficiency, and is still served on navy ships every Friday.

2 min1872
No. 019ConceptHistory

Julius Caesar’s secret code (and why it failed)

Caesar hid messages by shifting each letter three places. It worked until a 9th-century scholar invented a way to break any cipher like it.

2 min1st century BC
No. 007PlaceCountries

Kazakhstan brought half of a dying sea back to life

The Aral Sea was once the world’s fourth-largest lake. Soviet irrigation drained it into a desert, but a dam built by Kazakhstan in 2005 revived its northern part, and the fish came back.

2 min▶ Video1960 → 2005
One of the excavated kurgans at the Issyk kurgan site in Kazakhstan.
No. 046ObjectCountries

Kazakhstan’s national symbol might be a woman

The “Golden Man” on top of Almaty’s Independence Monument is a Saka warrior found in 1969 in a costume of about 4,000 gold pieces. Archaeologists still can’t say for sure whether the warrior was a man.

2 min4th–3rd century BC · found 1969
No. 072DishCuisine & Food

Ketchup started out as a fish sauce

Before it was red and sweet, ketchup was a salty, fermented fish brine from southern China, and later a British sauce made from mushrooms or walnuts.

1 min1812
No. 077Word originDesign

Lorem ipsum is a mangled Cicero quote

Designers’ favourite placeholder text is a scrambled passage from a 2,000-year-old book about pain and pleasure.

1 min45 BC
No. 037Word originLiterature

Sherlock Holmes never said “Elementary, my dear Watson”

The most famous line in detective fiction is not in any of Conan Doyle’s stories, though both halves of it are.

2 min1893 · 1915 · 1929
Tempura
No. 118DishCuisine & Food

Tempura was brought to Japan by the Portuguese

One of Japan’s most iconic dishes arrived with Portuguese missionaries and traders in the 16th century, and its name may come from Latin.

2 min16th century
A conversation with the ELIZA chatbot.
No. 038PhenomenonArtificial Intelligence

The 1960s chatbot people confided in

ELIZA just reflected your words back as questions. Its creator’s secretary still asked him to leave the room so she could talk to it in private.

2 min1966
Kette Kettenkurve Catenary
No. 055ConceptArchitecture

The arch that hangs upside down

Hang a chain from two points, photograph it, flip the picture, and you have the ideal shape for an arch.

2 min1675
No. 011ConceptCinema

The Bechdel test began as a joke in a comic strip

Three simple questions about a film started life in 1985, and the woman who thought of them wasn’t Alison Bechdel.

3 min1985
From book that tried to explain the illusions behind the Kempelen chess playing automaton (known as The Turk) after making reconstructions of the device.
No. 080ObjectArtificial Intelligence

The chess-playing machine that had a man inside

From 1770, a turbaned mechanical figure beat players across Europe and America at chess. It was a brilliant hoax, and Amazon named a service after it.

2 min1770
Городище Отырар с воздуха
No. 088EventCountries

The city in Kazakhstan that provoked Genghis Khan

In 1218 the governor of Otrar, a Silk Road city in today’s southern Kazakhstan, executed a Mongol trade caravan. The insult launched one of the most destructive invasions in history.

2 min1218–1219
No. 028StoryEconomics

The cobra effect: when rewards backfire

Pay people to kill pests and some of them will start breeding pests. The famous cobra version may be a legend, but the rat version in Hanoi really happened.

2 min1902
This was the first fully-automatic calculating machine. British computing pioneer Charles Babbage (1791-1871) first conceived the idea of an advanced calculatin
No. 004ObjectTechnology

The computer that was designed in 1837

Charles Babbage designed a steam-age machine with memory, a processor and punched-card programs, then never finished building it.

1 min1837
Image illustrating “The country that gave up the world’s fourth-largest nuclear arsenal”
No. 105EventCountries

The country that gave up the world’s fourth-largest nuclear arsenal

The Soviet Union set off 456 nuclear explosions in Kazakhstan. After independence, Kazakhstan closed the test site and gave up about 1,400 nuclear warheads.

2 min1949–1991
No. 031DishCuisine & Food

The croissant is Austrian (sort of)

France’s most famous breakfast pastry descends from the Viennese kipferl, brought to Paris by an Austrian entrepreneur around 1839.

2 min1839
No. 034PhenomenonMusic

The devil’s interval was never banned

The tritone is said to have been outlawed by the medieval Church as ‘the devil in music’. The phrase is real, but the ban looks like a story that grew in the retelling.

2 minc. 1700s
Photograph of Ignaz Semmelweis in 1860 by "Borsos és Doctor" (cropped version); this image inspired the famous engraving of Semmelweis by Jenő Doby.
No. 106PersonPeople

The doctor who said “wash your hands”

In 1847 Ignaz Semmelweis cut deaths on a Vienna maternity ward from about 18% to around 2% by making doctors wash their hands. The story of what happened next is more complicated than the legend.

2 min1847
No. 002ConceptArtificial Intelligence

The dream of thinking machines is thousands of years old

Long before computers, people imagined bronze giants, reasoning wheels and a language in which arguments could be settled by calculation.

2 minantiquity → 1920
No. 036PhenomenonPsychology

The Dunning–Kruger effect is not what the internet says

It started with a bank robber who thought lemon juice made him invisible. The famous “Mount Stupid” chart was never in the paper.

2 min1999
No. 103DishCuisine & Food

The Earl of Sandwich probably wasn’t gambling

The sandwich is named after an 18th-century earl. The famous story that he invented it at the card table comes from a travel book’s gossip.

2 min1760s
No. 030StoryTechnology

The first computer bug was an actual bug

In 1947 engineers found a moth stuck in a computer and taped it into the logbook. The word “bug” was already older than that.

2 min1947
Ada Lovelace daguerreotype by Antoine Claudet 1843 - cropped
No. 001PersonTechnology

The first computer programmer was a poet’s daughter

In 1843, a century before electronic computers, Ada Lovelace wrote out a program and imagined machines making music.

2 min1843
Front page of HaZvi, a Hebrew-language newspaper published in Jerusalem from 1884 to 1914 by Eliezer Ben-Yehuda, a leading pioneer of the revival of Hebrew as a
No. 057StoryLanguage

The language that came back after 1,700 years

For about 1,700 years nobody spoke Hebrew as a mother tongue. Then, in 1882, a baby in Jerusalem became its first native speaker in modern times.

2 min1880s
No. 081LawLaw

The man behind the Miranda warning

“You have the right to remain silent” is named after Ernesto Miranda. He won his Supreme Court case and was convicted again anyway.

2 min1966
NASA FIRMS imagery 2025-07-20 of Serpukhov-15 satellite ground station. NB. The terrain imagery is older and undated
No. 114EventPeople

The man who decided the missiles weren’t real

In 1983 a Soviet early-warning system reported five American nuclear missiles on their way. The officer on duty, Stanislav Petrov, judged it a false alarm, and he was right.

2 min26 September 1983
No. 048ObjectSpace

The mixtape we sent to the stars

Two spacecraft leaving the solar system carry a gold-plated record with whale song, a kiss, 55 greetings and Chuck Berry’s “Johnny B. Goode”.

2 min1977
Image illustrating “The Mona Lisa became famous by being stolen”
No. 082StoryArt

The Mona Lisa became famous by being stolen

In 1911 a handyman walked out of the Louvre with the Mona Lisa under his smock. The two years it was missing turned it into the most famous painting in the world.

2 min1911
No. 095StoryLiterature

The novel with no letter E

In 1969 Georges Perec wrote a whole French novel without using the most common letter in the language. Then someone translated it into English, keeping the rule.

2 min1969
No. 090EventSpace

The Pale Blue Dot

In 1990, from about 6 billion kilometres away, Voyager 1 turned around and photographed Earth. We take up less than a pixel.

2 min14 February 1990
Neapolitan pizza at Trappica
No. 097DishCuisine & Food

The pizza Margherita story is probably a myth

Every pizzeria tells it: in 1889 a Naples pizzaiolo invented a red, white and green pizza for Queen Margherita. Historians have found little evidence it happened.

2 min1889 (legend)
No. 099ObjectInventions

The Post-it Note came from a failed glue

A 3M chemist made an adhesive that barely stuck. It took six years and a slipping hymn-book bookmark to find a use for it.

2 min1968 → 1980
No. 074PhenomenonCinema

The same face, three different emotions

A 1920s Soviet experiment showed that audiences read emotion into an actor’s blank face, depending on the shot that came before it.

2 min▶ Videoc. 1918–1921
No. 128ObjectCinema

The scream that has been in hundreds of films

One man’s scream, recorded for a 1951 western, turns up in Star Wars and Indiana Jones. It is named after a character who barely appears.

2 min1951
No. 112StoryLaw

The snail in the ginger beer

A woman in Paisley, a bottle of ginger beer and a snail that was never proved to exist became the case on which the modern law of negligence rests.

2 min1928–1932
Spandrel in the Basilica di San Marco, Venice
No. 113ConceptArchitecture

The spandrel: a by-product that looks like a purpose

Not every feature of a living thing was ‘designed’ for a job. Two biologists borrowed a word from cathedral builders to make the point, and then architects argued about whether they had the cathedral right.

2 min1979
This photograph was made famous when singer Barbra Streisand sought to have its publication suppressed, on grounds of privacy. The "Streisand Effect" is a term
No. 115PhenomenonInternet Culture

The Streisand effect

A photo of Barbra Streisand’s house had been downloaded six times. Then she sued to suppress it, and hundreds of thousands of people looked.

1 min2003
Terracotta Army in Xi'an, China
No. 119ObjectHistory

The Terracotta Army was found by farmers digging a well

In 1974 farmers near Xi’an dug into an army of more than 8,000 clay soldiers. The emperor’s tomb next to it has never been opened, and the soil around it contains unusually high levels of mercury.

2 minc. 210 BC · found 1974
An illustration from Jules Verne's book "Découverte de la terre" ("Discovery of the Earth") drawn by Léon Benett. Ibn Battuta (1304-68/69) was a Maghrebi Berber
No. 062PersonPeople

The traveller who went five times farther than Marco Polo

In 1325 a 21-year-old from Tangier set out on pilgrimage to Mecca. He came home 29 years later, having travelled an estimated 117,000 km.

2 min1325–1354
A small bowl of soy sauce with a blob of green wasabi paste on the side and chop sticks laid across the top.
No. 124ConceptCuisine & Food

Umami: the taste discovered in a bowl of soup

In 1908 a Japanese chemist wondered why his wife’s seaweed broth tasted so good, and identified a fifth basic taste.

2 min1908
No. 126PlaceCities

Venice stands on an upside-down forest

Under the palaces of Venice are millions of wooden stakes driven into the mud of the lagoon, some of them for more than a thousand years.

2 min
No. 129PlaceCities

Who lives in Xi’an’s Muslim Quarter

In the heart of an ancient Chinese capital is a mosque that looks like a Buddhist temple, run by a Muslim people descended partly from Silk Road traders.

2 minsince the Tang dynasty
Macro photograph of the "OK" button on a TV remote control
No. 086Word originLanguage

Why do we say “OK”?

The world’s most recognised word began as a deliberately misspelled joke in a Boston newspaper.

2 min1839
QWERTY keyboard, on 2007 Sony Vaio laptop computer.
No. 100ObjectTechnology

Why your keyboard says QWERTY

The layout you type on every day was designed for a machine that no longer exists, and the famous reason for it may be wrong.

2 min1873
From Paludan's source: "Early 8th century murals in Prince Yide's tomb give an idea of the magnificence of Chang'an's city walls with their towering gate and co
No. 022PlaceCities

Xi’an was once one of the largest cities on Earth

Around 750, the city now called Xi’an was Chang’an: a “million-man city” at the eastern end of the Silk Road, home to Persians, Sogdians, Arabs and Christian monks.

2 min202 BC – 907 AD