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.

     For decades, technology encouraged people to squander their time and intellect as passive consumers. Today, tech has finally caught up with human potential. In Cognitive Surplus, Internet guru Clay Shirky forecasts the thrilling changes we will all enjoy as new digital technology puts our untapped resources of talent and goodwill to use at last. Since we Americans were suburbanized and educated by the postwar boom, we've had a surfeit of intellect, energy, and time-what Shirky calls a cognitive surplus. But this abundance had little impact on the common good because television consumed the lion's share of it-and we consume TV passively, in isolation from one another. Now, for the first time, people are embracing new media that allow us to pool our efforts at vanishingly low cost. The results of this aggregated effort range from mind expanding-reference tools like Wikipedia-to lifesaving-such as Ushahidi.com, which has allowed Kenyans to sidestep government censorship and report on acts of violence in real time. Shirky argues persuasively that this cognitive surplus-rather than being some strange new departure from normal behavior-actually returns our society to forms of collaboration that were natural to us up through the early twentieth century. He also charts the vast effects that our cognitive surplus- aided by new technologies-will have on twenty-first-century society, and how we can best exploit those effects. Shirky envisions an era of lower creative quality on average but greater innovation, an increase in transparency in all areas of society, and a dramatic rise in productivity that will transform our civilization. The potential impact of cognitive surplus is enormous. As Shirky points out, Wikipedia was built out of roughly 1 percent of the man-hours that Americans spend watching TV every year. Wikipedia and other current products of cognitive surplus are only the iceberg's tip. Shirky shows how society and our daily lives will be improved dramatically as we learn to exploit our goodwill and free time like never before.

    

    In addition to giving a strong foundation in the language itself, Lubanovic shows how to use it for a range of applications in business, science, and the arts, drawing on the rich collection of open source packages developed by Python fans.It's impressive how many commercial and production-critical programs are written now in Python. Developed to be easy to read and maintain, it has proven a boon to anyone who wants applications that are quick to write but robust and able to remain in production for the long haul.This book focuses on the current version of Python, 3.x, while including sidebars about important differences with 2.x for readers who may have to deal with programs in that version.

    Delving into brand-new research, she uncovers the powers of the natural world to improve health, promote reflection and innovation, and strengthen our relationships. As our modern lives shift dramatically indoors, these ideas—and the answers they yield—are more urgent than ever.

    In this book, you’ll learn how many of the most fundamental data science tools and algorithms work by implementing them from scratch. If you have an aptitude for mathematics and some programming skills, author Joel Grus will help you get comfortable with the math and statistics at the core of data science, and with hacking skills you need to get started as a data scientist. Today’s messy glut of data holds answers to questions no one’s even thought to ask. This book provides you with the know-how to dig those answers out. Get a crash course in Python Learn the basics of linear algebra, statistics, and probability—and understand how and when they're used in data science Collect, explore, clean, munge, and manipulate data Dive into the fundamentals of machine learning Implement models such as k-nearest Neighbors, Naive Bayes, linear and logistic regression, decision trees, neural networks, and clustering Explore recommender systems, natural language processing, network analysis, MapReduce, and databases

    Today, agile is being hailed as the essential bridge across that chasm. Agile, say its enthusiasts, can transform your company, catapulting you to the head of the pack.Not so fast. In this clear-eyed and indispensable book, Bain & Company thought leader and HBR author Darrell Rigby and colleagues Sarah Elk and Steve Berez provide a much-needed reality check. They dispel the myths and misconceptions that have accompanied agile's growth--the idea that it can reshape your organization all at once, for instance, or that it should be used in every function and for all types of work. They affirm and illustrate that agile teams can indeed transform the work environment, make people's jobs more rewarding, and turbocharge innovation--but only if the method is fully understood and implemented the right way.The key, they argue, is balance. Every organization must optimize and tightly control some of its operations. At the same time, every organization must innovate. Agile, done well, frees and facilitates vigorous innovation without sacrificing the efficiency and reliability essential to traditional operations. The authors break down how agile really works, show what not to do, and explain the crucial importance of scaling agile properly in order to get its full benefit. They then lay out a road map for leading the transition to a truly agile enterprise.Agile isn't a goal in itself; it's a means to the end of a high-performance operation. Doing Agile Right is the must-have guide for any company trying to make the transition--and for those already there, a way to avoid or recover from its potential pitfalls.

    These technologies so radically reshaped our world that we can no longer conceive of life without them.Today, the world’s population is projected to rise to well over 9.5 billion by 2050, and we are currently faced with the consequences of producing the energy that fuels, heats, and cools us. With temperatures and sea levels rising, and large portions of the globe plagued with drought, famine, and drug-resistant diseases, we need new technologies to tackle these problems.But we are on the cusp of a new convergence, argues world-renowned neuroscientist Susan Hockfield, with discoveries in biology coming together with engineering to produce another array of almost inconceivable technologies—next-generation products that have the potential to be every bit as paradigm shifting as the twentieth century’s digital wonders.The Age of Living Machines describes some of the most exciting new developments and the scientists and engineers who helped create them. Virus-built batteries. Protein-based water filters. Cancer-detecting nanoparticles. Mind-reading bionic limbs. Computer-engineered crops. Together they highlight the promise of the technology revolution of the twenty-first century to overcome some of the greatest humanitarian, medical, and environmental challenges of our time.

    Unlike so many education 'reforms, ' this is not small-bore stuff. For that reason alone, it's likely to be resisted by defenders of the status quo, even though it's necessary and right for our kids. We owe it to them to make sure this book isn't merely a terrific read; it must become a blueprint for educational transformation." --Joel Klein, Chancellor of the New York City Department of Education"A brilliant teacher, Christensen brings clarity to a muddled and chaotic world of education."--Jim Collins, bestselling author of "Good to Great"According to recent studies in neuroscience, the way we learn doesn't always match up with the way we are taught. If we hope to stay competitive-academically, economically, and technologically-we need to rethink our understanding of intelligence, reevaluate our educational system, and reinvigorate our commitment to learning. In other words, we need "disruptive innovation."Now, in his long-awaited new book, Clayton M. Christensen and coauthors Michael B. Horn and Curtis W. Johnson take one of the most important issues of our time-education-and apply Christensen's now-famous theories of "disruptive" change using a wide range of real-life examples. Whether you're a school administrator, government official, business leader, parent, teacher, or entrepreneur, you'll discover surprising new ideas, outside-the-box strategies, and straight-A success stories.You'll learn how Customized learning will help many more students succeed in school Student-centric classrooms will increase the demand for new technology Computers must be disruptively deployed to every student Disruptive innovation can circumvent roadblocks that have prevented other attempts at school reform We can compete in the global classroom-and get ahead in the global marketFilled with fascinating case studies, scientific findings, and unprecedented insights on how innovation must be managed, "Disrupting Class" will open your eyes to new possibilities, unlock hidden potential, and get you to think differently. Professor Christensen and his coauthors provide a bold new lesson in innovation that will help you make the grade for years to come.The future is now. Class is in session.

    Topics are broken down into three major conceptual pieces: Virtualization, Concurrency, and Persistence. Includes all major components of modern systems including scheduling, virtual memory management, disk subsystems and I/O, file systems, and even a short introduction to distributed systems.

    But what is it physically? And where is it really? Our mental map of the network is as blank as the map of the ocean that Columbus carried on his first Atlantic voyage. The Internet, its material nuts and bolts, is an unexplored territory. Until now.In Tubes, journalist Andrew Blum goes inside the Internet's physical infrastructure and flips on the lights, revealing an utterly fresh look at the online world we think we know. It is a shockingly tactile realm of unmarked compounds, populated by a special caste of engineer who pieces together our networks by hand; where glass fibers pulse with light and creaky telegraph buildings, tortuously rewired, become communication hubs once again. From the room in Los Angeles where the Internet first flickered to life to the caverns beneath Manhattan where new fiber-optic cable is buried; from the coast of Portugal, where a ten-thousand-mile undersea cable just two thumbs wide connects Europe and Africa, to the wilds of the Pacific Northwest, where Google, Microsoft, and Facebook have built monumental data centers—Blum chronicles the dramatic story of the Internet's development, explains how it all works, and takes the first-ever in-depth look inside its hidden monuments.This is a book about real places on the map: their sounds and smells, their storied pasts, their physical details, and the people who live there. For all the talk of the "placelessness" of our digital age, the Internet is as fixed in real, physical spaces as the railroad or telephone. You can map it and touch it, and you can visit it. Is the Internet in fact "a series of tubes" as Ted Stevens, the late senator from Alaska, once famously described it? How can we know the Internet's possibilities if we don't know its parts?Like Tracy Kidder's classic The Soul of a New Machine or Tom Vanderbilt's recent bestseller Traffic, Tubes combines on-the-ground reporting and lucid explanation into an engaging, mind-bending narrative to help us understand the physical world that underlies our digital lives.

    David A. Kessler explains why Americans suffer in unprecedented numbers from obesity, heart disease, diabetes, and other debilitating illnesses, and offers concrete solutions for reducing cardiovascular problems, keeping weight off, and curtailing chronic disease.The American body is in trouble. Heart disease is the number one cause of death in the United States today, and millions are plagued by conditions like obesity and diabetes. But we have the answer to improving health and longevity: 1) cut out fast carbs (processed foods); 2) reduce saturated fats; 3) exercise regularly.Though the solution is simple, the difficulty lies in the food we eat. Multi-billion-dollar processing plants and food manufacturers dot the heartland and work to increase the profits of the industrialized farming business—Big Agriculture—that produces excess corn and wheat. Today, we are being fed highly palatable, ultra-processed carbohydrates as food products—fast carbs—that are often marketed as “healthy.” Fast carbs are primarily starches and sugars produced during food processing and are present in much of what we eat. By destroying the healthy structure of whole food and increasing the amount of rapidly digestible starch it contains, these products bypass our body’s metabolic pathways. When combined with the ill-effects of saturated fats, we are putting ourselves on a collision course with weight gain, insulin resistance, digestive issues, heart disease, and more.The problem is, most of us don’t know where these fast carbs and saturated fats lurk in our daily diets. Accessible and eye-opening, Fast Carbs, Slow Carbs provides the information we need to understand exactly what we are eating—and to learn the truth about what it being sold to us as “healthy” food. Rising above the confusing range of specific popular diets—Keto, Paleo, Mediterranean, Vegan, Vegetarian—Dr. Kessler gives us an achievable baseline that can set us on the path to better health.

    Illustrating his text with maps, graphics, and photographs, David offers inside information about how the United States, allies and competitors, as well as key private corporations like Moon Express and Jeff Bezos's Blue Origin, plan to reach, inhabit, and even harvest the moon in the decades to come.Spurred on by the Google Lunar XPRIZE--$20 million for the first to get to the moon and send images home--the 21st-century space race back to the moon has become more urgent, and more timely, than ever. Accounts of these new strategies are set against past efforts, including stories never before told about the Apollo missions and Cold War plans for military surveillance and missile launches from the moon. Timely and fascinating, this book sheds new light on our constant lunar companion, offering reasons to gaze up and see it in a different way than ever before.

    Saylor, CEO of MicroStrategy, brings The Mobile Wave, a ground-breaking analysis of the impact of mobile intelligence--the fifth wave of computer technology. The Mobile Wave argues that the changes brought by mobile computing are so big and widespread that it's impossible for us to see it all, even though we are all immersed in it. Saylor explains that the current generation of mobile smart phones and tablet computers has set the stage to become the universal computing platform for the world. In the hands of billions of people and accessible anywhere and anytime, mobile computers are poised to become an appendage of the human being and an essential tool for modern life. With the perspective of a historian, the precision of a technologist, and the pragmatism of a CEO, Saylor provides a panoramic view of the future mobile world. He describes how: A Harvard education will be available to anyone with the touch of a screen.Cash will become virtual software and crime proof. Cars, homes, fruit, animals, and more will be tagged so they can tell you about themselves. Buying an item will be as easy as pointing our mobile device to scan and pay.Land and capital will become more of a liability than an asset.Social mobile media will push all businesses to think and act like software companies.Employment will shift as more service-oriented jobs are automated by mobile software.Products, businesses, industries, economies, and even society will be altered forever as the Mobile wave washes over us and changes the landscape. With so much change, The Mobile Wave is a guidebook for individuals, business leaders, and public figures who must navigate the new terrain as mobile intelligence changes everything.

    It's ever-present. Without it, you would die in minutes. And it has an epic story to tell.In Caesar's Last Breath, New York Times bestselling author Sam Kean takes us on a journey through the periodic table, around the globe, and across time to tell the story of the air we breathe, which, it turns out, is also the story of earth and our existence on it.With every breath, you literally inhale the history of the world. On the ides of March, 44 BC, Julius Caesar died of stab wounds on the Senate floor, but the story of his last breath is still unfolding; in fact, you're probably inhaling some of it now. Of the sextillions of molecules entering or leaving your lungs at this moment, some might well bear traces of Cleopatra's perfumes, German mustard gas, particles exhaled by dinosaurs or emitted by atomic bombs, even remnants of stardust from the universe's creation.Tracing the origins and ingredients of our atmosphere, Kean reveals how the alchemy of air reshaped our continents, steered human progress, powered revolutions, and continues to influence everything we do. Along the way, we'll swim with radioactive pigs, witness the most important chemical reactions humans have discovered, and join the crowd at the Moulin Rouge for some of the crudest performance art of all time. Lively, witty, and filled with the astounding science of ordinary life, Caesar's Last Breath illuminates the science stories swirling around us every second.