How is the market value of soccer players calculated? What does mathematics have to do with sports tactics? Or with electoral voting systems? Gigantic numbers with special properties keep our money safe and our messages secure when we do something online. Indeed, a mathematical infrastructure is present in the beating of a human heart, the development of a pandemic, the growth of crystals, and all kinds of music from Bach to Bacharach.
Using accessible language, the authors show how mathematics and algorithms are behind many of our daily activities and the current functioning of the world, from economics and finance to political systems, video games or gambling. Contrary to their image as geniuses on the fringes of reality, mathematicians have had a lot to do with making the world we live in the way it is.