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Touching a tiny case mounted on doorframes
Myths & mysteries

Touching a tiny case mounted on doorframes

The small case is fixed to a doorpost, and touching it on entry serves as a physical reminder of faith.

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Why old travel trunks became flat-topped
Travel

Why old travel trunks became flat-topped

Flat tops let luggage handlers stack trunks in tight storage rooms; domed lids looked elegant and shed water but slid off one another.

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Following a leader situated on a raised throne
Myths & mysteries

Following a leader situated on a raised throne

A raised, ornate seat makes the speaker the visual focus and reinforces the hierarchy: everyone else has to look up to meet their eyes.

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Touch a sensitive plant and its leaves collapse
Science

Touch a sensitive plant and its leaves collapse

Touch makes water rush out of special cells at the joints of a sensitive plant’s leaves. Those cells lose pressure, so the leaflets fold; when water flows…

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Taking a vow to own absolutely nothing
Myths & mysteries

Taking a vow to own absolutely nothing

Renouncing private property is meant to free the soul, but it can leave the practical work of daily life to the people who support the renunciant.

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Why higher tax rates can bring in less money
Economy

Why higher tax rates can bring in less money

Raise taxes high enough and some people may work less or hide income. The government then has a smaller pool of earnings to tax, so it can collect less…

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Ringing a small handheld bell repeatedly
Myths & mysteries

Ringing a small handheld bell repeatedly

Chiming a small bell repeatedly is believed to clear the surrounding atmosphere and draw everyone’s attention.

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Charging extra for broken power outlets
Transport

Charging extra for broken power outlets

Seat fees attach to the seat assignment, while the outlet depends on working cabin wiring. When that socket is dead, the passenger has paid premium prices for…

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How video games create worlds out of noise
Technology

How video games create worlds out of noise

Procedural generation uses mathematical noise and a random seed to build terrain, dungeons, or planets from rules instead of designing every feature by hand.

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Why deep water looks blue
Science

Why deep water looks blue

Water filters its own light: it absorbs red more readily than blue, so blue travels farther through deep water before some of it scatters back to your eyes.…

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Empty ride seats are tracked as efficiency loss
Transport

Empty ride seats are tracked as efficiency loss

Transit efficiency measures how much of a vehicle’s capacity carries passengers. Empty seats count as wasted room, and the bus burns fuel to chauffeur them…

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How 'mistakes were made' hides responsibility
Psychology

How 'mistakes were made' hides responsibility

“Mistakes were made” puts the mistake in the spotlight and the person who made it offstage. Passive voice lets someone acknowledge damage without saying “I…

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Rainbows are actually full circles
Science

Rainbows are actually full circles

The bottom of a rainbow is still there—the ground is just in the way. Light bounces through raindrops and reaches your eyes from a ring of angles around the…

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Catering feeds hundreds of crew members twice a day
Culture & entertainment

Catering feeds hundreds of crew members twice a day

Mobile kitchens set up in muddy fields or concrete lots to serve hot food to film crews. A dry chicken breast can quickly hurt crew morale.

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Luxury made generosity depend on who was watching
Psychology

Luxury made generosity depend on who was watching

In experiments with luxury products, researchers found more self-interested behavior—including greater giving when generosity could enhance a public…

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Windows Pinball was an ad all along
Games

Windows Pinball was an ad all along

Space Cadet, bundled with Windows, was one table from the commercial game Full Tilt! Pinball. Players could spend hours on the familiar included table while…

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The awkward gymnastics of getting out of a train seat
Transport

The awkward gymnastics of getting out of a train seat

Train seats are packed close, and the aisle is narrow, so getting out means twisting past knees, bags, and armrests. The seat promises a smooth ride; the exit…

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Heavy Rain made folding paper part of the wait
Games

Heavy Rain made folding paper part of the wait

The original PS3 release included origami instructions during installation. While the game prepared its files, players could fold a real figure associated…

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