"The Dangerous Zero – The heretical number that the church tried to ban" tells the biography of a number. For centuries, the West relied on Roman numerals, a clumsy system that had no concept of "nothing." The idea of a void was terrifying to the medieval Church, which associated emptiness with the devil. Zero had to be imported from India and the Arab world, smuggled in by merchants like Fibonacci. Science writer Benjamin Scott traces the battle between the Abacists (conservatives) and the Algorists (innovators). The book explains how the acceptance of zero allowed for the birth of calculus, negative numbers, and modern physics. It is a story of how a mathematical concept clashed with theology. "The Dangerous Zero" reveals that the most powerful number is the one that represents nothing. It shows how the acceptance of the void was the necessary first step for humanity to understand the infinite universe.