Now back in print, A Calculating People reveals how numeracy profoundly shaped the character of society in the early republic and provides a wholly original perspective on the development of modern America.

Written by two of the world's foremost authorities on mental calculation, The Mental Calculator's Handbook is essential reading for aspiring calculating prodigies. From multiplying fractions to extracting square roots, all the techniques are presented and explained in a clear and rigorous way.

Calculating God is the new near-future SF thriller from the popular and award-winning Robert J. Sawyer. An alien shuttle craft lands outside the Royal Ontario Museum in Toronto. A six-legged, two-armed alien emerges, who says, in perfect English, "Take me to a paleontologist." It seems that Earth, and the alien's home planet, and the home planet of another alien species traveling on the alien mother ship, all experienced the same five cataclysmic events at about the same time (one example of these "cataclysmic events" would be the meteor that wiped out the dinosaurs). Both alien races believe this proves the existence of God: i.e. he's obviously been playing with the evolution of life on each of these planets. From this provocative launch point, Sawyer tells a fast-paced, and morally and intellectually challenging, SF story that just grows larger and larger in scope. The evidence of God's universal existence is not universally well received on Earth, nor even immediately believed. And it reveals nothing of God's nature. In fact. it poses more questions than it answers. When a supernova explodes out in the galaxy but close enough to wipe out life on all three home-worlds, the big question is, Will God intervene or is this the sixth cataclysm:? Calculating God is SF on the grand scale. Calculating God is a 2001 Hugo Award Nominee for Best Novel. At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.

At the beginning of the twentieth century, H. G. Wells predicted that statistical thinking would be as necessary for citizenship in a technological world as the ability to read and write. But in the twenty-first century, we are often overwhelmed by a baffling array of percentages and probabilities as we try to navigate in a world dominated by statistics. Cognitive scientist Gerd Gigerenzer says that because we haven't learned statistical thinking, we don't understand risk and uncertainty. In order to assess risk -- everything from the risk of an automobile accident to the certainty or uncertainty of some common medical screening tests -- we need a basic understanding of statistics. Astonishingly, doctors and lawyers don't understand risk any better than anyone else. Gigerenzer reports a study in which doctors were told the results of breast cancer screenings and then were asked to explain the risks of contracting breast cancer to a woman who received a positive result from a screening. The actual risk was small because the test gives many false positives. But nearly every physician in the study overstated the risk. Yet many people will have to make important health decisions based on such information and the interpretation of that information by their doctors. Gigerenzer explains that a major obstacle to our understanding of numbers is that we live with an illusion of certainty. Many of us believe that HIV tests, DNA fingerprinting, and the growing number of genetic tests are absolutely certain. But even DNA evidence can produce spurious matches. We cling to our illusion of certainty because the medical industry, insurance companies, investment advisers, and election campaigns have become purveyors of certainty, marketing it like a commodity. To avoid confusion, says Gigerenzer, we should rely on more understandable representations of risk, such as absolute risks. For example, it is said that a mammography screening reduces the risk of breast cancer by 25 percent. But in absolute risks, that means that out of every 1,000 women who do not participate in screening, 4 will die; while out of 1,000 women who do, 3 will die. A 25 percent risk reduction sounds much more significant than a benefit that 1 out of 1,000 women will reap. This eye-opening book explains how we can overcome our ignorance of numbers and better understand the risks we may be taking with our money, our health, and our lives.

This book contextualizes the discovery of a Venus astronomical pattern by a female Mayan astronomer at Chich'en Itza and the discovery's later adaptation and application at Mayapan. Calculating Brilliance brings different intellectual threads together across time and space, from the Classic to the Postclassic, the colonial period to the twenty-first century to offer a new vision for understanding Mayan astronomy.

Presents mathematical shortcut and "how to develop a calculator in your head."

Mary Robinette Kowal's science fiction debut, 2019 Winner of the Hugo and Nebula Award for best novel, The Calculating Stars, explores the premise behind her award-winning "Lady Astronaut of Mars." Winner 2018 Nebula Award for Best Novel Winner 2019 Locus Award for Best Novel Winner 2019 Hugo Award for Best Novel Finalist 2019 Campbell Memorial Award Finalist 2021 Hugo Award for Best Series Named one of Esquire's 75 Best Sci-Fi Books of All Time Locus Trade Paperback Bestseller List Publishers Weekly Best Books of 2018—Science Fiction/Fantasy Winner 2019 RUSA Reading List for Science Fiction—American Library Association Locus 2018 Recommended Reading List Buzzfeed—17 Science-Fiction Novels By Women That Are Out Of This World Locus Bestseller List Chicago Review of Books—Top 10 Science Fiction Books of 2018 Goodreads—Most Popular Books Published in July 2018 (#66) The Verge—12 fantastic science fiction and fantasy novels for July 2018 Unbound Worlds—Best SciFi and Fantasy Books of July 2018 Den of Geek—Best Science Fiction Books of June 2018 Publishers Weekly—Best SFF Books of 2018 Omnivoracious—15 Highly Anticipated SFF Reads for Summer 2018 Past Magazine—Best Novels of 2018 Bookriot—Best Science Fiction Books of 2018 The Library Thing—Top Five Books of 2018 On a cold spring night in 1952, a huge meteorite fell to earth and obliterated much of the east coast of the United States, including Washington D.C. The ensuing climate cataclysm will soon render the earth inhospitable for humanity, as the last such meteorite did for the dinosaurs. This looming threat calls for a radically accelerated effort to colonize space, and requires a much larger share of humanity to take part in the process. Elma York’s experience as a WASP pilot and mathematician earns her a place in the International Aerospace Coalition’s attempts to put man on the moon, as a calculator. But with so many skilled and experienced women pilots and scientists involved with the program, it doesn’t take long before Elma begins to wonder why they can’t go into space, too. Elma’s drive to become the first Lady Astronaut is so strong that even the most dearly held conventions of society may not stand a chance against her. At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.