Keith Devlin tells his incredible and important story in The Man of Numbers: Fibonacci’s Arithmetic Revolution, also one of the year’s best science books, tracing how Fibonacci revolutionized everything from education to economics by making arithmetic available to the masses. If you think the personal computing revolution of the 1980s was a milestone of our civilization, consider the personal computation revolution. And yet, de Pisa’s cultural contribution is hardly common knowledge.
The change in society brought about by the teaching of modern arithmetic was so pervasive and all-powerful that within a few generations people simply took it for granted. There was no longer any recognition of the magnitude of the revolution that took the subject from an obscure object of scholarly interest to an everyday mental tool. Compared with Copernicus’s conclusions about the position of Earth in the solar system and Galileo’s discovery of the pendulum as a basis for telling time, Leonardo’s showing people how to multiply 193 by 27 simply lacks drama.” ~ Keith Devlin
Though “about” mathematics, Fibonacci’s story is really about a great number of remarkably timely topics: gamification for good (Liber abbaci brimmed with puzzles and riddles like the rabbit problem to alleviate the tedium of calculation and engage readers with learning); modern finance (Fibonacci was the first to develop an early form of present-value analysis, a method for calculating the time value of money perfected by iconic economist Irving Fisher in the 1930s); publishing entrepreneurship (the first edition of Liber Abbaci was too dense for the average person to grasp, so da Pisa released — bear in mind, before the invention of the printing press — a simplified version accessible to the ordinary traders of Pisa, which allowed the text to spread around the world); abstract symbolism (because numbers, as objective as we’ve come to perceive them as, are actually mere commonly agreed upon abstractions); and even remix culture (Liber Abbaci was assumed to be the initial source for a great deal of arithmetic bestsellers released after the invention of the printing press.)
Above all, however, Fibonacci’s feat was one of storytelling — much like TED, he took existing ideas that were far above the average person’s competence and grasp, and used his remarkable expository skills to make them accessible and attractive to the common man, allowing these ideas to spread far beyond the small and self-selected circles of the scholarly elite.
A book about Leonardo must focus on his great contribution and his intellectual legacy. Having recognized that numbers, and in particular powerful and efficient ways to compute with them, could change the world, he set about making that happen at a time when Europe was poised for major advances in science, technology, and commercial practice. Through Liber Abbaci he showed that an abstract symbolism and a collection of seemingly obscure procedures for manipulating those symbols had huge practical applications.” ~ Keith Devlin
Originally featured, with a Kindle preview, in July.
11. MASTERS OF MYSTERY
As far as unlikely friendships go, it hardly gets any unlikelier than that between Sherlock Holmes creator Sir Arthur Conan Doyle and legendary illusionist Harry Houdini. Born fifteen years apart into dramatically different families, one the educated product of a proper Scottish upbringing and the other the self-made son of a Hungarian immigrant, the two even stood in stark physical contrast, once likened by a journalist to Pooh and Piglet.
But when they met in 1920, something extraordinary began. In Masters of Mystery: The Strange Friendship of Arthur Conan Doyle and Harry Houdini, acclaimed pop culture biographer Christopher Sandford tells the story of the pair’s unique friendship, sometimes macabre, sometimes comic, and fundamentally human, underpinned by their shared longing for lost loved ones and their adventures in the world of Spiritualism — at the time, a world with unmatched popular allure.