Never before in history have we been able to acquire, record, communicate, and use information in so many different forms. Never before have we had access to such vast quantities of data of every kind. This revolution goes far beyond the limitless content that fills our lives, because information also underlies our understanding of ourselves, the natural world, and the universe. It is the key that unites fields as different as linguistics, cryptography, neuroscience, genetics, economics, and quantum mechanics. And the fact that information bears no necessary connection to meaning makes it a profound puzzle that people with a passion for philosophy have pondered for centuries.Table of ContentsLECTURE 1The Transformability of Information 4LECTURE 2Computation and Logic Gates 17LECTURE 3Measuring Information 26LECTURE 4Entropy and the Average Surprise 34LECTURE 5Data Compression and Prefix-Free Codes 44LECTURE 6Encoding Images and Sounds 57LECTURE 7Noise and Channel Capacity 69LECTURE 8Error-Correcting Codes 82LECTURE 9Signals and Bandwidth 94LECTURE 10Cryptography and Key Entropy 110LECTURE 11Cryptanalysis and Unraveling the Enigma 119LECTURE 12Unbreakable Codes and Public Keys 130LECTURE 13What Genetic Information Can Do 140LECTURE 14Life’s Origins and DNA Computing 152LECTURE 15Neural Codes in the Brain 169LECTURE 16Entropy and Microstate Information 185LECTURE 17Erasure Cost and Reversible Computing 198LECTURE 18Horse Races and Stock Markets 213LECTURE 19Turing Machines and Algorithmic Information 226LECTURE 20Uncomputable Functions and Incompleteness 239LECTURE 21Qubits and Quantum Information 253LECTURE 22Quantum Cryptography via Entanglement 266LECTURE 23It from Bit: Physics from Information 281LECTURE 24The Meaning of Information 293

    The heart of this accessible series is a thorough examination of decision making at three key levels. First, you'll look at decisions made at the individual level, where, among the many things you'll learn is that intuition is more than just a gut instinct and, in fact, represents a powerful pattern recognition capability. Then, you'll explore decisions made at the group level, where you'll try to answer the question of whether groups are "smarter" and more capable of making critical decisions than individuals. And finally, you'll pull back to analyze organizational decision making, in which Professor Roberto demonstrates how some organizations have encouraged and reliably performed vigilant decision making in the face of risky scenarios. Whether you're the head of a Fortune 500 company, a government agency, or an everyday household, you constantly make decisions important to you and those immediately around you. These lectures offer you a toolbox of practical knowledge and skills that you can apply to various decisions - whether large or small - in your everyday life and work. Professor Roberto's lively lectures are packed with useful anecdotes, tools, and advice designed to improve your own ability to make informed decisions. As you explore the intriguing process of making a good decision, you'll strengthen your grip on individual theories of decision making and the situations that illustrate them. Disclaimer: Please note that this recording may include references to supplemental texts or print references that are not essential to the program and not supplied with your purchase.©2009 The Teaching Company, LLC (P)2009 The Great Courses

    These lectures are based on their seminar course at Columbia University on Western intellectual history augmented by additional lectures by selected "guest" lecturers. Gives a guided tour through 3,000 years of Western thought.In 7 containers (26 cm.).Lectures by Darren M. Staloff, Louis Markos, Jeremy Adams, Phillip Cary, Dennis G. Dalton, Alan Charles Kors, Jeremy Shearmur, Kathleen M. Higgins, Robert Hilary Kane, Robert C. Solomon, Douglas Kellner, and Mark W. Risjord.42 audiocassettes (approximately 2520 min.) : analog, Dolby processed + 7 course guidebooks (22 cm).Contents:pt. 1. Classical origins --pt. 2. Christian age --pt. 3. From the Renaissance to the Age of Reason --pt. 4. Enlightenment and its critics --pt. 5. Age of ideology --pt. 6. Modernism and the age of analysis --pt. 7. Age of modernity.

    That’s a mistake, Tim Harford says in The Data Detective. We shouldn’t be suspicious of statistics—we need to understand what they mean and how they can improve our lives: they are, at heart, human behavior seen through the prism of numbers and are often “the only way of grasping much of what is going on around us.” If we can toss aside our fears and learn to approach them clearly—understanding how our own preconceptions lead us astray—statistics can point to ways we can live better and work smarter.As “perhaps the best popular economics writer in the world” (New Statesman), Tim Harford is an expert at taking complicated ideas and untangling them for millions of readers. In The Data Detective, he uses new research in science and psychology to set out ten strategies for using statistics to erase our biases and replace them with new ideas that use virtues like patience, curiosity, and good sense to better understand ourselves and the world. As a result, The Data Detective is a big-idea book about statistics and human behavior that is fresh, unexpected, and insightful.

    For more than two centuries, our understanding of the laws of nature expanded rapidly. But today, despite our best efforts, we know nothing more about these laws than we knew in the 1970s. Why is physics suddenly in trouble? And what can we do about it?One of the major problems, according to Smolin, is string theory: an ambitious attempt to formulate a “theory of everything” that explains all the particles and forces of nature and how the universe came to be. With its exotic new particles and parallel universes, string theory has captured the public’s imagination and seduced many physicists.But as Smolin reveals, there’s a deep flaw in the theory: no part of it has been tested, and no one knows how to test it. In fact, the theory appears to come in an infinite number of versions, meaning that no experiment will ever be able to prove it false. As a scientific theory, it fails. And because it has soaked up the lion’s share of funding, attracted some of the best minds, and effectively penalized young physicists for pursuing other avenues, it is dragging the rest of physics down with it.With clarity, passion, and authority, Smolin charts the rise and fall of string theory and takes a fascinating look at what will replace it. A group of young theorists has begun to develop exciting ideas that, unlike string theory, are testable. Smolin not only tells us who and what to watch for in the coming years, he offers novel solutions for seeking out and nurturing the best new talent—giving us a chance, at long last, of finding the next Einstein.

    King (William and Mary University) delves into the story of how, why, where, and when we became human. These lectures will help you understand the forces that have shaped, and continue to shape, our species. "An evolutionary perspective on human behavior," notes Dr. King, "results in more than just knowledge about dates and sites when and where specific evolutionary milestones likely occurred." "It is also a window on the past and future of our species. An entirely new way of thinking comes into focus when we consider the human species within an evolutionary perspective."A Century of ScholarshipWhile covering these subjects in this 24-lecture series, Dr. King synthesizes the best that more than a century of scientific scholarship has to offer across a variety of disciplines. Biological anthropologists study primate anatomy and behavior both to understand evolution and to learn more about our common ancestor. Biological anthropologists are joined by molecular anthropologists to better understand hominids by studying fossils, ancient skeletal remains, and lifestyle information such as cave art and stone tools. Case Studies that Clarify Evolution and Its Power Dr. King begins by explaining key mechanisms through which evolution functions, citing famous and definitive case studies that demonstrate these forces. In one such landmark study, for example, biologists Peter and Rosemary Grant returned to the Galapagos Islands more than 100 years after Darwin's first voyage to conduct research on island finches. In 1977, a drought-induced scarcity of soft, edible seeds brought forth in the very next generation a population of finches with larger, stronger beaks capable of crushing larger, tougher seeds. Extraordinarily, in 1985, heavy rains produced a surplus of softer seeds, and natural selection produced a succeeding generation of the smaller-beaked variety. Evolution had occurred in two different directions within a decade. This "natural selection" is the theoretical tool of evolution, which helps us make sense of these facts. Why Evolution Remains Important to Us Today Perhaps the greatest measure of this theory's power is its relevance to our lives today. - Did you know that the gene which causes sickle cell anemia must be inherited from both parents to cause the disease but the disease does not occur when only a single gene is inherited? - Or that the single gene, in fact, affords protection from malaria? Or that race, a category so securely ingrained in our consciousness, is practically meaningless in biological terms? - Or how to evaluate the claim that a gene can be responsible for a certain personality trait? A Glimpse Into Our Selected Primate Heritage With an understanding of the basic mechanisms of evolutionary change in hand, the course looks at how our ancient primate ancestors adapted. Consider the anatomical features we share with monkeys, great apes, and other primates. Our large brains, grasping hands, and forward-facing eyes allowing us to perceive depth are critical to the way we function in the world. Yet the fossil record tells us that some 70 million years ago these distinctive primate features did not exist. What caused the first primates to emerge from existing mammalian populations? One proposed solution was that the appearance of insects living in the lower canopies of trees offered a plentiful food resource to those species adapted to procure it. Could depth perception and grasping ability have provided an advantage here, and hence been naturally selected? This is the function of biological anthropology: confronting the facts, then suggesting and testing possibilities. A Course as Much About the Present as the PastWith so much of evolutionary history taken up with the past, the insights gained in these lectures may tempt you to add questions of your own: - Is human evolution still a force in today's world? Hasn't our modern, mobile culture rendered evolution irrelevant? - In fact, human evolution is a stronger force than ever, interacting with human culture in complex ways. Issues such as obesity, AIDS, and genetics are all discussed. And you may well find these lectures opening your eyes to the extraordinary ways in which the biological power of natural selection is still at work in the world today. Course Lecture Titles1. What is Biological Anthropology? 2. How Evolution Works 3. The Debate Over Evolution 4. Matter Arising—New Species 5. Prosimians, Monkeys, and Apes 6. Monkey and Ape Social Behavior 7. The Mind of the Great Ape 8. Models for Human Ancestors? 9. Introducing the Hominids 10. Lucy and Company 11. Stones and Bones 12. Out of Africa 13. Who Were the Neandertals? 14. Did Hunting Make Us Human? 15. The Prehistory of Gender 16. Modern Human Anatomy and Behavior 17. On the Origins of Homo sapiens 18. Language 19. Do Human Races Exist? 20. Modern Human Variation 21. Body Fat, Diet, and Obesity 22. The Body and Mind Evolving 23. Tyranny of the Gene? 24. Evolution and Our Future

    Over the course of 48 richly detailed lectures, Professor Garland covers the breadth and depth of human history from the perspective of the so-called ordinary people, from its earliest beginnings through the Middle Ages.The past truly comes alive as you take a series of imaginative leaps into the world of history's anonymous citizens, people such as a Greek soldier marching into battle in the front row of a phalanx; an Egyptian woman putting on makeup before attending an evening party with her husband; a Greek citizen relaxing at a drinking party with the likes of Socrates; a Roman slave captured in war and sent to work in the mines; and a Celtic monk scurrying away with the Book of Kells during a Viking invasion.Put yourself in the sandals of ordinary people and discover what it was like to be among history's 99%. What did these everyday people do for a living? What was their home like? What did they eat? What did they wear? What did they do to relax? What were their beliefs about marriage? Religion? The afterlife?This extraordinary journey takes you across space and time in an effort to be another person - someone with whom you might not think you have anything at all in common - and come away with an incredible sense of interconnectedness. You'll see the range of possibilities of what it means to be human, making this a journey very much worth taking.

    A no-holds-barred assault on popular superstitions and prejudices, with more than 80,000 copies in print, Why People Believe Weird Things debunks these nonsensical claims and explores the very human reasons people find otherworldly phenomena, conspiracy theories, and cults so appealing. In an entirely new chapter, "Why Smart People Believe in Weird Things," Michael Shermer takes on science luminaries like physicist Frank Tippler and others, who hide their spiritual beliefs behind the trappings of science.Shermer, science historian and true crusader, also reveals the more dangerous side of such illogical thinking, including Holocaust denial, the recovered-memory movement, the satanic ritual abuse scare, and other modern crazes. Why People Believe Strange Things is an eye-opening resource for the most gullible among us and those who want to protect them.

    Hand argues that extraordinarily rare events are anything but. In fact, they’re commonplace. Not only that, we should all expect to experience a miracle roughly once every month.     But Hand is no believer in superstitions, prophecies, or the paranormal. His definition of “miracle” is thoroughly rational. No mystical or supernatural explanation is necessary to understand why someone is lucky enough to win the lottery twice, or is destined to be hit by lightning three times and still survive. All we need, Hand argues, is a firm grounding in a powerful set of laws: the laws of inevitability, of truly large numbers, of selection, of the probability lever, and of near enough.     Together, these constitute Hand’s groundbreaking Improbability Principle. And together, they explain why we should not be so surprised to bump into a friend in a foreign country, or to come across the same unfamiliar word four times in one day. Hand wrestles with seemingly less explicable questions as well: what the Bible and Shakespeare have in common, why financial crashes are par for the course, and why lightning does strike the same place (and the same person) twice. Along the way, he teaches us how to use the Improbability Principle in our own lives—including how to cash in at a casino and how to recognize when a medicine is truly effective.     An irresistible adventure into the laws behind “chance” moments and a trusty guide for understanding the world and universe we live in, The Improbability Principle will transform how you think about serendipity and luck, whether it’s in the world of business and finance or you’re merely sitting in your backyard, tossing a ball into the air and wondering where it will land.

    What makes evolution such a profoundly provocative concept, so convincing to most scientists, yet so socially and politically divisive? The Theory of Evolution: A History of Controversy is an examination of the varied elements that so often make this science the object of strong sentiments and heated debate. Professor Edward J. Larson leads you through the "evolution" of evolution, with an eye toward enhancing your understanding of the development of the theory itself and the roots of the controversies that surround it. In these lectures you will: Explore pre-Darwinian theories of the origins of life, from Genesis and the ancient Greeks to such 18th- and 19th-century scientists as Georges Cuvier and Chevalier de Lamarck Follow the life and work of Charles Darwin, and the impact of his 1859 masterpiece, On the Origin of Species. Darwin's theory of evolution by natural selection was immediately recognized as a threat to traditional religion, but was quickly accepted (the first printing of Origin of Species sold out on the first day) Examine the history of evolutionary science after Darwin-a fascinating story that includes the "rediscovery," after 35 years, of Gregor Mendel's work on genetic variation; the unearthing of prehominid, or early human, fossils by Raymond Dart in 1925 and the Leakey family in the 1950s; and the confusion created by the sensational, but later discredited, discovery of Piltdown Man-a fake evolutionary "missing link"-in 1912 Trace the history of religious objections to evolution, from those of Darwin's own time to contemporary efforts to teach creation science in American schools. This includes a detailed discussion of the famous Scopes "monkey trial," which in fact was a staged media event, designed to create publicity for the town of Dayton, Tennessee. Are Our Genes more Important than We Are? This course makes it clear that the history of controversy surrounding evolution is not limited to a dispute between science and religion. Even within the scientific community, the fine details of the theory of evolution have long been a matter of passionate dispute. In fact, in the last third of the 19th century, the principal objections were scientific, not religious. Although the fossil record was a key piece of evidence for evolution, it had gaps that could be used to argue against the theory. And both proponents and critics wondered how altruistic human qualities such as love and generosity could possibly have evolved through the competitive, often harsh, processes that Darwin described. From Professor Larson's presentation, you will learn that new ideas in evolution science have often created new controversies. For example, is it truly possible, as some scientists now maintain, that humans exist merely to ensure the survival of their genes? Such research has created disagreement among scientists about the degree to which evolution drives human behavior, and has further alienated many segments of the public. Evolution's "Dark Side": Social Darwinism In these lectures, you will review perhaps the most sinister controversy associated with the theory of evolution: social Darwinism. From the beginning, the Darwinian theory of evolution has been linked to economic and political views. Thomas Malthus's theories of population growth and competition for limited resources even inspired Darwin's thinking on natural selection. Unfortunately, later supporters of evolution carried this line of thinking too far. Beginning with Herbert Spencer, who coined the term "survival of the fittest," Darwin's ideas were used as evidence for a wide range of social beliefs, from laissez-faire capitalism to racism, colonialism, and, in perhaps the worst application, Nazism. In the United States, social Darwinism has served as a basis for the creation of IQ tests and for eugenics programs that resulted in the forced sterilization of thousands of mentally ill or retarded Americans. Unsettling Implications: The Growing Gulf Between Science and Religion During the late 19th century, largely through the efforts of scientists who sought to integrate evolutionary science with spiritual belief, evolution was widely accepted by the religious community in the United States. Today, this is hardly the case. In his last four lectures, Professor Larson examines the trends that have, since 1920, widened the gulf between science and religion. These include an increase in fundamentalist Protestantism, the weakening of liberal Protestantism as a counteracting force, and the growing power of a firmly conservative South. In the 1960s, federally funded neo-Darwinian textbooks provoked a conservative backlash. Beginning with the publication of Henry M. Morris's The Genesis Flood, efforts to gain equal time for the teaching of creation science, based on biblical teachings, gathered strength. Rebuffed by the courts, creationism continues to thrive through the increasing numbers of private Christian schools and through home schooling. The growing gulf between science and religion has unsettling implications for our society. Large segments of the American population reject the naturalism of current evolutionary thinking. Nine of 10 Americans believe in spiritual causes for life, with only 10 percent accepting the purely naturalistic explanations espoused by evolution. Strikingly, these statistics are almost exactly the opposite among the scientific community. A Pulitzer Prize-Winning Teacher As both a historian of science and a professor of law, Professor Edward J. Larson brings exceptional qualifications to this subject. His book, Summer for the Gods: The Scopes Trial and America's Continuing Debate Over Science and Religion, won the 1998 Pulitzer Prize in History. His analysis provides an invaluable perspective on the volatile history of what is arguably the single most significant idea of modern times.

    But the Black Death was arguably the most significant event in Western history, profoundly affecting every aspect of human life, from the economic and social to the political, religious, and cultural. In its wake the plague left a world that was utterly changed, forever altering the traditional structure of European societies and forcing a rethinking of every single system of Western civilization: food production and trade, the church, political institutions, law, art, and more. In large measure, by the profundity of the changes it brought, the Black Death produced the modern world we live in today.While the story of the Black Death is one of destruction and loss, its breathtaking scope and effects make it one of the most compelling and deeply intriguing episodes in human history. Understanding the remarkable unfolding of the plague and its aftermath provides a highly revealing window not only on the medieval world but also on the forces that brought about the Renaissance, the Protestant Reformation, and modernity itself.Speaking to the full magnitude of this world-changing historical moment, The Black Death: The World's Most Devastating Plague, taught by celebrated medievalist Dorsey Armstrong of Purdue University, takes you on an unforgettable excursion into the time period of the plague, its full human repercussions, and its transformative effects on European civilization. In 24 richly absorbing lectures, you'll follow the path of the epidemic in its complete trajectory across medieval Europe. Majestic in scope and remarkable in detail, this course goes to the heart of one of Western history's most catalytic and galvanizing moments, the effects of which gave us the modern world.

    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.

    A project of CERN, the European Organization for Nuclear Research, its audacious purpose is to re-create, in a 16.5-mile-long circular tunnel under the French-Swiss countryside, the immensely hot and dense conditions that existed some 13.7 billion years ago within the first trillionth of a second after the fiery birth of our universe. The collider is now crashing protons at record energy levels never created by scientists before, and it will reach even higher levels by 2013. Its superconducting magnets guide two beams of protons in opposite directions around the track. After accelerating the beams to 99.9999991 percent of the speed of light, it collides the protons head-on, annihilating them in a flash of energy sufficient—in accordance with Einstein’s elegant statement of mass-energy equivalence, E=mc2—to coalesce into a shower of particles and phenomena that have not existed since the first moments of creation. Within the LHC’s detectors, scientists hope to see empirical confirmation of key theories in physics and cosmology.In telling the story of what is perhaps the most anticipated experiment in the history of science, Amir D. Aczel takes us inside the control rooms at CERN at key moments when an international team of top researchers begins to discover whether this multibillion-euro investment will fulfill its spectacular promise. Through the eyes and words of the men and women who conceived and built CERN and the LHC—and with the same clarity and depth of knowledge he demonstrated in the bestselling Fermat’s Last Theorem—Aczel enriches all of us with a firm grounding in the scientific concepts we will need to appreciate the discoveries that will almost certainly spring forth when the full power of this great machine is finally unleashed.Will the Higgs boson make its breathlessly awaited appearance, confirming at last the Standard Model of particles and their interactions that is among the great theoretical achievements of twentieth-century physics? Will the hidden dimensions posited by string theory be revealed? Will we at last identify the nature of the dark matter that makes up more than 90 percent of the cosmos? With Present at the Creation, written by one of today’s finest popular interpreters of basic science, we can all follow the progress of an experiment that promises to greatly satisfy the curiosity of anyone who ever concurred with Einstein when he said, “I want to know God’s thoughts—the rest is details.”

    It now has 600,000 to a million page hits daily. Every now and then, Munroe would get emails asking him to arbitrate a science debate. 'My friend and I were arguing about what would happen if a bullet got struck by lightning, and we agreed that you should resolve it . . . ' He liked these questions so much that he started up What If. If your cells suddenly lost the power to divide, how long would you survive? How dangerous is it, really, to be in a swimming pool in a thunderstorm? If we hooked turbines to people exercising in gyms, how much power could we produce? What if everyone only had one soulmate?When (if ever) did the sun go down on the British empire? How fast can you hit a speed bump while driving and live?What would happen if the moon went away?In pursuit of answers, Munroe runs computer simulations, pores over stacks of declassified military research memos, solves differential equations, and consults with nuclear reactor operators. His responses are masterpieces of clarity and hilarity, studded with memorable cartoons and infographics. They often predict the complete annihilation of humankind, or at least a really big explosion. Far more than a book for geeks, WHAT IF: Serious Scientific Answers to Absurd Hypothetical Questions explains the laws of science in operation in a way that every intelligent reader will enjoy and feel much the smarter for having read.

    Yet there’s a black hole at the heart of biology. We do not know why complex life is the way it is, or, for that matter, how life first began. In The Vital Question, award-winning author and biochemist Nick Lane radically reframes evolutionary history, putting forward a solution to conundrums that have puzzled generations of scientists.For two and a half billion years, from the very origins of life, single-celled organisms such as bacteria evolved without changing their basic form. Then, on just one occasion in four billion years, they made the jump to complexity. All complex life, from mushrooms to man, shares puzzling features, such as sex, which are unknown in bacteria. How and why did this radical transformation happen?The answer, Lane argues, lies in energy: all life on Earth lives off a voltage with the strength of a lightning bolt. Building on the pillars of evolutionary theory, Lane’s hypothesis draws on cutting-edge research into the link between energy and cell biology, in order to deliver a compelling account of evolution from the very origins of life to the emergence of multicellular organisms, while offering deep insights into our own lives and deaths.Both rigorous and enchanting, The Vital Question provides a solution to life’s vital question: why are we as we are, and indeed, why are we here at all?