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patterns

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Why Do Reversing Trucks Not Beep Any More?1:45

Why Do Reversing Trucks Not Beep Any More?

1.6M views • 12 years ago
Tom Scott
Tom Scott stands by a construction site and explains why reversing vehicles now use a white-noise hiss instead of beeping. The sound is easier to locate directionally and less annoying to neighbours.
Topic match · UX & UI design
Why Web Filters Don't Work: Penistone and the Scunthorpe Problem3:37

Why Web Filters Don't Work: Penistone and the Scunthorpe Problem

3.6M views • 10 years ago
Tom Scott
Tom Scott visits Penistone to explain the Scunthorpe problem, showing why naive web and profanity filters block innocent words.
Topic match · Software architecture & design
The moiré effect lights that guide ships home3:54

The moiré effect lights that guide ships home

3.1M views • 8 years ago
Tom Scott
Tom Scott investigates moire-effect beacons, called Inogon leading marks, a Swedish invention from the 1980s that shows different patterns depending on the viewer's position. He visits one used to mark an undersea cable and tracks down its history.