RUDE NUMBERS

The first compass was invented to stop people from arguing about “left.”

✗ FAKE
The magnetic compass was developed in China and used for divination before navigation. It points to magnetic north and was not created for settling arguments.

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“X” became the unknown because it’s mysterious and slightly smug.Algebra uses symbols and letters to represent numbers and quantities — turning numbers into a guessing game since forever.The base of natural logs is e ≈ 2.718 — the math constant that never bothered being intuitive.The first calculator was invented to avoid counting sheep twice. Insomnia drove innovation.A factorial is the product of all positive integers up to a given number (n!) — the math version of escalating commitment.Calculus was invented independently by Newton and Leibniz — the world’s most intellectual tie.See all Rude Numbers facts →

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