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Information technology

Same Result Even If You Press Twice: Idempotence

Why is pressing an elevator button twice safe, while double-clicking a payment button feels risky? This article explains idempotence—from its mathematical name to everyday buttons,

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General knowledge

The Brain’s Limit on Relationships: Dunbar’s Number

Why can contact lists grow while deep ties stay few? Dunbar’s Number says humans can sustainably keep only so many stable relationships—often about 150—layered as roughly 5, 15, 50

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Earth science

The Moment an Underground Pressure Cooker Bursts: Geysers

A geyser is a hot spring that shoots out groundwater heated underground, together with steam, at regular intervals. This article covers where the name came from, the conditions gey

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Film & media

Teleporting in Front of a Green Wall: Chroma Key

Chroma key is a video compositing technique that makes one color on screen transparent and layers another background in its place. This piece covers how it works, its history from

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Tourism studies

Where Does Tourists’ Money Go? Tourism Leakage

Why does so little of what tourists spend reach local fishermen and neighborhood restaurants? This piece explains tourism leakage: how tourism revenue reaches the local economy, im

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Education

A Bridge Laid Before New Knowledge: The Advance Organizer

Proposed by educational psychologist David Ausubel, an advance organizer is a broad, general idea presented before new material so it can connect to what learners already know. Thi

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Journalism & communication

Media Ethics and Transparency: The Foundation of Trust

The media plays a central role in modern society and is closely connected to our daily lives. For this reason, the media must uphold high ethical standards when communicating infor

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Psychology

Remembered by Its Peak and Its End: The Peak-End Rule

The peak-end rule is our tendency to judge a past experience mainly by its most intense moment and its final moment, rather than by its total or average. This article covers the cl