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Education

A Garden Where Children Grow: The Kindergarten

The kindergarten, a school where young children learn through play, was created by the German educator Friedrich Fröbel in 1840. This article covers the first kindergarten, his tea

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Business administration

The Hidden Price of Changing: Switching Costs

Why is it so hard to switch carriers, airlines, or software even when a cheaper option exists? This piece explains switching costs, the three types identified by Burnham, Frels, an

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Information technology

Systems Mirror Their Organizations: Conway's Law

Why does an organization's communication structure come to resemble its software structure? This article explains the origin and logic of Conway's law, real-world examples, and the

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Psychology

The Confidence of Not Knowing: The Dunning-Kruger Effect

Why are some people so confident even when they do poorly on a test, while experts often seem modest? This article explains the Dunning-Kruger effect and the classic study behind i

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Statistics

Twenty-Three People Are Enough: The Birthday Paradox

Why is it so likely that two people in a small group share a birthday? This article covers the birthday paradox, the two keys to calculating it, why our intuition misses it, and ho