Numbers · Everyday science · Practical AI

Small questions.
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Why does a mountain look smaller in a photo? How much of a price increase undoes a discount? I write about the questions that are easy to ask and worth slowing down to answer.

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Featured essay · Interactive calculator

A 20% drop needs more than a 20% recovery.

Follow a $100 price through a sale and a price increase, then use the calculator to try a different drop.

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Everyday numbers · Wix

What an eight-hour average leaves out

Two workweeks share a mean and a median. Only one breaks a ten-hour daily limit. Try the same check on your own comparison.

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Yosef Gerson

I start with a worked example and look for the one detail that changes the answer. The collection includes original essays, visual explanations, and tools you can try.

About Yosef Gerson