The Illusion Of Certainty

This book provides an understanding and appreciation of the risk assessment process and the ability to objectively interpret health risk values. Included is an explanation of the uncertainty inherent in the assessment of risks as well as an explanation of how the communication and characterization of risks can dramatically alter the perception of those risks. Case studies illustrate the strengths and limitations of characterizing certain risks. Using the accepted risk assessment paradigm proposed by the National Research Council, these case studies illustrate which risk values have merit and why other assessments fail to meet basic criteria.

This book provides an understanding and appreciation of the risk assessment process and the ability to objectively interpret health risk values. Included is an explanation of the uncertainty inherent in the assessment of risks as well as an explanation of how the communication and characterization of risks can dramatically alter the perception of those risks. Case studies illustrate the strengths and limitations of characterizing certain risks. Using the accepted risk assessment paradigm proposed by the National Research Council, these case studies illustrate which risk values have merit and why other assessments fail to meet basic criteria.

Annotation 'After Certainty' offers a reconstruction of the history of epistemology, understood as a series of changing expectations about the cognitive ideal that we might hope to achieve in this world. Pasnau ranges widely over philosophy from Aristotle to the 17th century, and examines in some detail the rise of science as an autonomous discipline.

Nobel Laureate Ilya Prigogine discusses the irreversibility of time and his findings impact on the laws of physics.

Certainty is perfect knowledge that has total security from error, or the mental state of being without doubt. Objectively defined, certainty is total continuity and validity of all foundational inquiry, to the highest degree of precision. Something is certain only if no skepticism can occur. Philosophy (at least, historical Cartesian philosophy) seeks this state. It is widely held that certainty about the real world is a failed historical enterprise (that is, beyond deductive truths, tautology, etc.). This is in large part due to the power of David Hume's problem of induction. Physicist Carlo Rovelli adds that certainty, in real life, is useless or often damaging (the idea is that "total security from error" is impossible in practice, and a complete "lack of doubt" is undesirable). This book discusses the issues that surround claims of certainty and the illusion of absolute truth and perfection.

When we feel certain about our factual knowledge, all too often we are wrong. This phenomenon, labeled 'the certainty illusion', is demonstrated in four experiments in which subjects (1) answered questions about a variety of topics and (2) indicated their degree of certainty about each answer. Subjects were wrong frequently on answers judged certain to be correct. Careful tutoring of subjects in the subtleties of expressing their certainty in terms of probabilities and odds did little to reduce the illusion. Feelings of certainty were so strong that subjects were willing to bet on the correctness of their knowledge. Because of the illusion, the bets they accepted were quite disadvantageous to them. The psychological basis for unwarranted certainty is discussed in terms of the inferential processes whereby knowledge is reconstructed from fragments of perceptions and memories. (Author).

Quite soon, the world’s information infrastructure is going to reach a level of scale and complexity that will force scientists and engineers to approach it in an entirely new way. The familiar notions of command and control are being thwarted by realities of a faster, denser world of communication where choice, variety, and indeterminism rule. The myth of the machine that does exactly what we tell it has come to an end. What makes us think we can rely on all this technology? What keeps it together today, and how might it work tomorrow? Will we know how to build the next generation—or will we be lulled into a stupor of dependence brought about by its conveniences? In this book, Mark Burgess focuses on the impact of computers and information on our modern infrastructure by taking you from the roots of science to the principles behind system operation and design. To shape the future of technology, we need to understand how it works—or else what we don’t understand will end up shaping us. This book explores this subject in three parts: Part I, Stability: describes the fundamentals of predictability, and why we have to give up the idea of control in its classical meaning Part II, Certainty: describes the science of what we can know, when we don’t control everything, and how we make the best of life with only imperfect information Part III, Promises: explains how the concepts of stability and certainty may be combined to approach information infrastructure as a new kind of virtual material, restoring a continuity to human-computer systems so that society can rely on them.

"The Illusion of Certainty" follows two parallel storylines. Marc is a successful businessman who seems to have everything-a great job, a beautiful wife, a house in an upscale neighborhood of Portland, Oregon and two great kids who are preparing for college. But something is not right. Marc is unsettled by the sudden change in his wife, Aimee, who seems distant and unhappy. What is going on with her? The second storyline involves a successful young attorney Alexandra Mattson. Alex, as she is called by her friends, meets a handsome young cop, Sean, during an unexpected crisis in her neighborhood. Sean and Alex seem made for each other and begin to merge their futures in a world of uncertainty. The only certainty in life is that we will face uncertainty. Despite all of the technology and controls available in the modern world, sometimes the only comfort comes from the human touch.

From the celebrated author of Nickel and Dimed, Barbara Ehrenreich explores how we are killing ourselves to live longer, not better. A razor-sharp polemic which offers an entirely new understanding of our bodies, ourselves, and our place in the universe, Natural Causes describes how we over-prepare and worry way too much about what is inevitable. One by one, Ehrenreich topples the shibboleths that guide our attempts to live a long, healthy life -- from the importance of preventive medical screenings to the concepts of wellness and mindfulness, from dietary fads to fitness culture. But Natural Causes goes deeper -- into the fundamental unreliability of our bodies and even our "mind-bodies," to use the fashionable term. Starting with the mysterious and seldom-acknowledged tendency of our own immune cells to promote deadly cancers, Ehrenreich looks into the cellular basis of aging, and shows how little control we actually have over it. We tend to believe we have agency over our bodies, our minds, and even over the manner of our deaths. But the latest science shows that the microscopic subunits of our bodies make their own "decisions," and not always in our favor. We may buy expensive anti-aging products or cosmetic surgery, get preventive screenings and eat more kale, or throw ourselves into meditation and spirituality. But all these things offer only the illusion of control. How to live well, even joyously, while accepting our mortality -- that is the vitally important philosophical challenge of this book. Drawing on varied sources, from personal experience and sociological trends to pop culture and current scientific literature, Natural Causes examines the ways in which we obsess over death, our bodies, and our health. Both funny and caustic, Ehrenreich then tackles the seemingly unsolvable problem of how we might better prepare ourselves for the end -- while still reveling in the lives that remain to us.

An eye-opening look at the ways we misjudge risk every day and a guide to making better decisions with our money, health, and personal lives In the age of Big Data we often believe that our predictions about the future are better than ever before. But as risk expert Gerd Gigerenzer shows, the surprising truth is that in the real world, we often get better results by using simple rules and considering less information. In Risk Savvy, Gigerenzer reveals that most of us, including doctors, lawyers, financial advisers, and elected officials, misunderstand statistics much more often than we think, leaving us not only misinformed, but vulnerable to exploitation. Yet there is hope. Anyone can learn to make better decisions for their health, finances, family, and business without needing to consult an expert or a super computer, and Gigerenzer shows us how. Risk Savvy is an insightful and easy-to-understand remedy to our collective information overload and an essential guide to making smart, confident decisions in the face of uncertainty.

In this examination of religion's influence on society, an anthropologist critiques fundamentalism and all mindsets based on rigid cultural certainties. The author argues that the future can only be safeguarded by a global humanistic outlook that recognizes and respects differing cultural perspectives and endorses the use of critical reason and empiricism. Houk coins the term "culturalism" to describe dogmatic viewpoints governed by culture-specific values and preconceived notions. Culturalism gives rise not only to fundamentalism in religion but also stereotypes about race, gender, and sexual orientation. Turning specifically to Christian fundamentalism, the author analyzes the many weaknesses of what he calls a faith-based epistemology, particularly as such thinking is displayed in young-earth creationism, the reliance on revelation and subjective experiences as a source of religious knowledge, and the reverence accorded the Bible despite its obvious flaws. As he points out, the problem with such cultural knowledge generally is that it is non-falsifiable and ultimately has no lasting value in contrast to the data-based and falsifiable knowledge produced by science, which continues to prove its worth as a reliable source of accurate information. Concluding that there is no future to the fundamentalist mindset in a diverse world where religion often exacerbates conflicts, he makes a strong case for reason and mutual tolerance.

Quite soon, the world’s information infrastructure is going to reach a level of scale and complexity that will force scientists and engineers to approach it in an entirely new way. The familiar notions of command and control are being thwarted by realities of a faster, denser world of communication where choice, variety, and indeterminism rule. The myth of the machine that does exactly what we tell it has come to an end. What makes us think we can rely on all this technology? What keeps it together today, and how might it work tomorrow? Will we know how to build the next generation—or will we be lulled into a stupor of dependence brought about by its conveniences? In this book, Mark Burgess focuses on the impact of computers and information on our modern infrastructure by taking you from the roots of science to the principles behind system operation and design. To shape the future of technology, we need to understand how it works—or else what we don’t understand will end up shaping us. This book explores this subject in three parts: Part I, Stability: describes the fundamentals of predictability, and why we have to give up the idea of control in its classical meaning Part II, Certainty: describes the science of what we can know, when we don’t control everything, and how we make the best of life with only imperfect information Part III, Promises: explains how the concepts of stability and certainty may be combined to approach information infrastructure as a new kind of virtual material, restoring a continuity to human-computer systems so that society can rely on them.

Most intelligent people today still believe that mathematics is a body of unshakable truths about the physical world and that mathematical reasoning is exact and infallible. Mathematics: The Loss of Certainty refutes that myth.

This volume is the third volume of papers originating from the European Mathematical Psychology Group. Earlier volumes were: E. Degreef & J. van Buggenhaut (Eds.), Trends In Mathematical Psychology, Amsterdam, North-Holland Publ. Cy., 1984, and E.E. Roskam & R. Suck (Eds.), Progress in Mathematical Psychology, Amsterdam: Elsevier Science Publ. As the title indicates, this volume presents work in progress, which was reported in one of the recent annual meetings of the European Mathematical Psychology Group. The Group finds it worthwhile to disseminate this work, using a review process which is somewhat less strict, and a publication lag which is shorter, than would be the case for standard international journals. The editor is happy that the meetings of the European Mathematical Psychology Group are regularly attended by colleagues from overseas. Their contributions also appear in this volume, as was the case in earlier volumes. Despite apparent heterogeneity, the reader will observe that European mathemati cal psychologists have a keen interest in basic issues of mathematical modeling and measurement theory, and that also substantive topics, such as decision making, per ception, and performance are studied in the context of formal modeling. Also, and per haps of more than casual importance for future developments, is the fact that theory, experiment, and data analysis go closely together. It should therefore not surprise that psychometric topics, and topics in scaling are represented in this volume, alongside with topics of a more 'purely' mathematical nature.

In Benefit of the Doubt, influential theologian, pastor, and bestselling author Gregory Boyd invites readers to embrace a faith that doesn't strive for certainty, but rather for commitment in the midst of uncertainty. Boyd rejects the idea that a person's faith is as strong as it is certain. In fact, he makes the case that doubt can enhance faith and that seeking certainty is harming many in today's church. Readers who wrestle with their faith will welcome Boyd's message that experiencing a life-transforming relationship with Christ is possible, even with unresolved questions about the Bible, theology, and ethics. Boyd shares stories of his own painful journey, and stories of those to whom he has ministered, with a poignant honesty that will resonate with readers of all ages.

Statistical illiteracy can have an enormously negative impact on decision making. This volume of collected papers brings together applied and theoretical research on risks and decision making across the fields of medicine, psychology, and economics. Collectively, the essays demonstrate why the frame in which statistics are communicated is essential for broader understanding and sound decision making, and that understanding risks and uncertainty has wide-reaching implications for daily life. Gerd Gigerenzer provides a lucid review and catalog of concrete instances of heuristics, or rules of thumb, that people and animals rely on to make decisions under uncertainty, explaining why these are very often more rational than probability models. After a critical look at behavioral theories that do not model actual psychological processes, the book concludes with a call for a heuristic revolution that will enable us to understand the ecological rationality of both statistics and heuristics, and bring a dose of sanity to the study of rationality.

Why absolute certainty is impossible in science In today's unpredictable and chaotic world, we look to science to provide certainty and answers—and often blame it when things go wrong. The Blind Spot reveals why our faith in scientific certainty is a dangerous illusion, and how only by embracing science's inherent ambiguities and paradoxes can we truly appreciate its beauty and harness its potential. Crackling with insights into our most perplexing contemporary dilemmas, from climate change to the global financial meltdown, this book challenges our most sacredly held beliefs about science, technology, and progress. At the same time, it shows how the secret to better science can be found where we least expect it—in the uncertain, the ambiguous, and the inevitably unpredictable. William Byers explains why the subjective element in scientific inquiry is in fact what makes it so dynamic, and deftly balances the need for certainty and rigor in science with the equally important need for creativity, freedom, and downright wonder. Drawing on an array of fascinating examples—from Wall Street's overreliance on algorithms to provide certainty in uncertain markets, to undecidable problems in mathematics and computer science, to Georg Cantor's paradoxical but true assertion about infinity—Byers demonstrates how we can and must learn from the existence of blind spots in our scientific and mathematical understanding. The Blind Spot offers an entirely new way of thinking about science, one that highlights its strengths and limitations, its unrealized promise, and, above all, its unavoidable ambiguity. It also points to a more sophisticated approach to the most intractable problems of our time.

“Brilliant, rich...breathtakingly honest and sometimes very funny.” —Anne Lamott “I loved this book.” ­—Glennon Doyle “Extraordinary.” —Caroline Leavitt “Observant and warm...the finest company.”—Kelly Corrigan “A beautiful sucker punch, like life.“ —Ron Fournier “Subtle, powerful, and hypnotic...” — Martin Cruz Smith What happens when we can no longer pretend that the ground underfoot is bedrock and the sky above predictable? All Janine Urbaniak Reid ever wanted was for everyone she loved to be okay so she might relax and maybe be happy. Her life strategy was simple: do everything right. This included trying to be the perfect mother to her three kids so they would never experience the kind of pain she pretended not to feel growing up. What she didn’t expect was the chaos of an out-of-control life that begins when her young son’s hand begins to shake. The Opposite of Certainty is the story of Janine’s reluctant journey beyond easy answers and platitudes. She searches for a source of strength bigger than her circumstances, only to have her circumstances become even thornier with her own crisis. Drawn deeply and against her will into herself, and into the eternal questions we all ask, she discovers hidden reserves of strength, humor, and a no-matter-what faith that looks nothing like she thought it would. Beautifully written and deeply hopeful, Janine shows us how we can come through impossible times transformed and yet more ourselves than we’ve ever allowed ourselves to be.

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.