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Humble Pi: When Math Goes Wrong in the Real World

by Matt Parker

When everyday math goes wrong

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Awards & Recognition

  • Book club selection

    Adam Savage Book Club Pick

    Identified as an Adam Savage Book Club pick.

AlbakiReads Editorial

When everyday math goes wrong

Matt Parker uses real-world mathematical errors to show how much ordinary systems depend on numbers working as intended. The examples range across technology, transport, finance, elections, infrastructure, and history, from coding glitches to mistakes involving measurements and calculations. Together, they make applied mathematics tangible through the consequences of miscalculation—and highlight how errors can ripple beyond the page or screen where they begin.

Good fit for readers who enjoy

  • For readers curious about the practical role of mathematics in everyday systems.
  • For those interested in real-world mishaps involving technology, engineering, finance, or public life.

Themes

Applied mathematicsHuman error and miscalculationTechnology and infrastructureUnexpected consequences

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Book overview

#1 INTERNATIONAL BESTSELLER

AN ADAM SAVAGE BOOK CLUB PICK

The book-length answer to anyone who ever put their hand up in math class and asked, "When am I ever going to use this in the real world?"

"Fun, informative, and relentlessly entertaining, Humble Pi is a charming and very readable guide to some of humanity's all-time greatest miscalculations--that also gives you permission to feel a little better about some of your own mistakes." --Ryan North, author of How to Invent Everything


Our whole world is built on math, from the code running a website to the equations enabling the design of skyscrapers and bridges. Most of the time this math works quietly behind the scenes . . . until it doesn't. All sorts of seemingly innocuous mathematical mistakes can have significant consequences.

Math is easy to ignore until a misplaced decimal point upends the stock market, a unit conversion error causes a plane to crash, or someone divides by zero and stalls a battleship in the middle of the ocean.

Exploring and explaining a litany of glitches, near misses, and mathematical mishaps involving the internet, big data, elections, street signs, lotteries, the Roman Empire, and an Olympic team, Matt Parker uncovers the bizarre ways math trips us up, and what this reveals about its essential place in our world. Getting it wrong has never been more fun.
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