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An essential guide to recognizing bogus numbers and misleading dataNumbers are often intimidating, confusing, and even deliberately deceptive-especially when they are really big. The media loves to report on millions, billions, and trillions, but frequently makes basic mistakes or presents such numbers in misleading ways. And misunderstanding numbers can have serious consequences, since they can deceive us in many of our most important decisions, including how to vote, what to buy, and whether to make a financial investment. In this short, accessible, enlightening, and entertaining book, leading computer scientist Brian Kernighan teaches anyone-even diehard math-phobes-how to demystify the numbers that assault us every day.With examples drawn from a rich variety of sources, including journalism, advertising, and politics, Kernighan demonstrates how numbers can mislead and misrepresent. In chapters covering big numbers, units, dimensions, and more, he lays bare everything from deceptive graphs to speciously precise numbers. And he shows how anyone-using a few basic ideas and lots of shortcuts-can easily learn to recognize common mistakes, determine whether numbers are credible, and make their own sensible estimates when needed.Giving you the simple tools you need to avoid being fooled by dubious numbers, Millions, Billions, Zillions is an essential survival guide for a world drowning in big-and often bad-data.

Numbers, Complex. --- Data mining. --- Algorithmic knowledge discovery --- Factual data analysis --- KDD (Information retrieval) --- Knowledge discovery in data --- Knowledge discovery in databases --- Mining, Data --- Database searching --- Complex numbers --- Imaginary quantities --- Quantities, Imaginary --- Algebra, Universal --- Quaternions --- Vector analysis --- A picture is worth a thousand words. --- AARP. --- American Medical Association. --- Approximation. --- Arithmetic mean. --- Arithmetic. --- Associated Press. --- Baby boomers. --- Back-of-the-envelope calculation. --- Barrel (unit). --- Birth rate. --- Blogger (service). --- Body surface area. --- Breast cancer. --- Calculation. --- Celsius. --- Centenarian. --- Computation. --- Consumer Reports. --- Corporate tax. --- Correlation does not imply causation. --- Daniel Kahneman. --- Darrell Huff. --- Dilbert. --- Dot-com bubble. --- Economics. --- Edward Tufte. --- Error. --- Estimation. --- Exabyte. --- Exponential growth. --- FLOPS. --- Factoid. --- Fermi problem. --- Gigabyte. --- Half Gone. --- Headline. --- Hectare. --- Home computer. --- How to Lie with Statistics. --- Hulu. --- Identity theft. --- Inception. --- Inflation. --- Innumeracy (book). --- Jeff Bezos. --- John Maynard Keynes. --- Just in case. --- Kilobit. --- Kilogram. --- Life expectancy. --- Little's law. --- Millionth. --- Mortality rate. --- My Local. --- Naomi Wolf. --- National Rifle Association. --- Net worth. --- Newspaper. --- Newsweek. --- Nobel Prize. --- Order of magnitude. --- Outright. --- Percentage point. --- Percentage. --- Petabit. --- Petabyte. --- Population growth. --- Pound sterling. --- Power of 10. --- Quadrillion. --- Quantity. --- Ranking (information retrieval). --- Result. --- Round number. --- Rule of 72. --- Sampling bias. --- School bus. --- Scientific notation. --- Square foot. --- Square yard. --- Strategic Petroleum Reserve (United States). --- Tax cut. --- Tax. --- Technology. --- Terabit. --- The Beauty Myth. --- The Colbert Report. --- The New York Times. --- The Wisdom of Crowds. --- The World's Billionaires. --- U.S. News & World Report. --- Ultra-high-definition television. --- Unemployment. --- W. E. B. Du Bois. --- Warren Buffett. --- With high probability. --- Year. --- Your Computer (British magazine). --- Zettabyte. --- Mathematics --- Mathematics in mass media --- Critical thinking --- Statistics --- Big data --- Million (The number) --- Billion (The number) --- Evaluation --- Methodology

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Computers are everywhere. Some of them are highly visible, in laptops, tablets, cell phones, and smart watches. But most are invisible, like those in appliances, cars, medical equipment, transportation systems, power grids, and weapons. We never see the myriad computers that quietly collect, share, and sometimes leak vast amounts of personal data about us. Through computers, governments and companies increasingly monitor what we do. Social networks and advertisers know far more about us than we should be comfortable with, using information we freely give them. Criminals have all-too-easy access to our data. Do we truly understand the power of computers in our world?Understanding the Digital World explains how computer hardware, software, networks, and systems work. Topics include how computers are built and how they compute; what programming is and why it is difficult; how the Internet and the web operate; and how all of these affect our security, privacy, property, and other important social, political, and economic issues. This book also touches on fundamental ideas from computer science and some of the inherent limitations of computers. It includes numerous color illustrations, notes on sources for further exploration, and a glossary to explain technical terms and buzzwords.

Computer. Automation --- Computer science --- Computer networks --- Security measures --- Computer security --- Computer systems --- Online social networks --- Informatique --- Réseaux d'ordinateurs --- Sécurité informatique --- Informatique -- Gestion --- Réseaux sociaux (Internet) --- Popular works. --- Management --- Ouvrages de vulgarisation --- Sécurité --- Mesures --- Online social networks.

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Numbers are often intimidating, confusing, and even deliberately deceptive―especially when they are really big. The media loves to report on millions, billions, and trillions, but frequently makes basic mistakes or presents such numbers in misleading ways. And misunderstanding numbers can have serious consequences, since they can deceive us in many of our most important decisions, including how to vote, what to buy, and whether to make a financial investment. In this short, accessible, enlightening, and entertaining book, Brian Kernighan teaches anyone―even diehard math-phobes―how to demystify the numbers that assault us every day. Giving you the simple tools you need to avoid being fooled by dubious numbers, « Millions, Billions, Zillions » is an essential survival guide for a world drowning in big―and often bad―data

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Computerpionier Brian W. Kernighan war in der Entwicklung von UNIX beteiligt. In diesem lebendig illustrierten Buch erzählt er eine umfassende Geschichte des äußerst einflussreichen und weit verbreiteten Betriebssystems von den Anfängen bis zur heutigen Bedeutung. Kernighan leistete fast von Anfang an aktive Beiträge. Sein persönliches Miterleben der Entwicklung und die persönlichen Anekdoten von seinen damaligen Wegbegleitern verleihen dem Buch einen großen Wert. Kernighan schafft eine gelungene Balance zwischen »offizieller Geschichte« und seinem eigenen Engagement bei der Entwicklung von UNIX. Er erklärt überzeugend, warum gerade UNIX und sein Ökosystem einen Siegeszug in die Server dieser Welt antreten konnten.

Programmierung --- Betriebsysteme --- AT&T Bell Labs --- AWK-Programmiersprache --- Ken Thompson --- Dennis Ritchie

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