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.

Matt Parker is the author of Things to Make and Do in the Fourth Dimension as well as a stand-up comedian and YouTuber with over 100 million views. He writes about math for The Guardian, hosts the Science Channel’s Outrageous Acts of Science, and appears regularly on various BBC shows including More or Less, The Infinite Monkey Cage, and QI. He will join us on February 4 about his new book, Humble Pi: When Math Goes Wrong in the Real World, which came out on January 19, 2021.

For more information and videos of Harvard Science Book Talks, see https://science.fas.harvard.edu/book-talks.