The work of Karl Popper has had extraordinary influence across the fields of scientific and social thought. Widely regarded as one of the greatest philosophers of science of the twentieth century, he was also a highly influential social and political philosopher, a proponent and defender of the "open society". "Popper's Legacy" examines Popper in the round, analysing in particular his moral and psychological insights. Once Popper's scientific legacy is couched in political and moral terms, it becomes apparent that his concern for individual autonomy does not come at the expense of institutional guidelines and social conventions. Instead, these guidelines turn out to be essential sanctions for individual freedom. Popper envisions the conduct of the scientific community as paralleling the conduct of any democratically established community. Critical rationality guides the words and actions of all participants and leadership can be replaced without violence. In presenting a critical overview, "Popper's Legacy" reveals the debt many intellectual movements - such as Marxism, feminism, and postmodernism - still owe to Popper.

This volume examines Popper’s philosophy by analyzing the criticism of his most popular critics: Thomas Kuhn, Paul Feyerabend and Imre Lakatos. They all followed his rejection of the traditional view of science as inductive. Starting from the assumption that Hume’s criticism of induction is valid, the book explores the central criticism and objections that these three critics have raised. Their objections have met with great success, are significant and deserve paraphrase. One also may consider them reasonable protests against Popper’s high standards rather than fundamental criticisms of his philosophy. The book starts out with a preliminary discussion of some central background material and essentials of Popper’s philosophy. It ends with nutshell representations of the philosophies of Popper. Kuhn, Feyerabend and Lakatos. The middle section of the book presents the connection between these philosophers and explains what their central ideas consists of, what the critical arguments are, how they presented them, and how valid they are. In the process, the author claims that Popper's popular critics used against him arguments that he had invented (and answered) without saying so. They differ from him mainly in that they demanded of all criticism that it should be constructive: do not stop believing a refuted theory unless there is a better alternative to it. Popper hardly ever discussed belief, delegating its study to psychology proper; he usually discussed only objective knowledge, knowledge that is public and thus open to public scrutiny.

Karl Popper (1902-1994) is one of the great thinkers of the modern age. He developed his key idea, the "open society" already at age 17. Popper at the time believed passionately in Newton's theory of gravitation, by which the science of the day explained the motion of all bodies on earth and in the heavens. But during the great eclipse of 1919 observations were made that confirmed for the first time Einstein's theory of relativity. The London Times wrote: "Scientific Revolution; New Theory of the Universe; Newton's Conception Overthrown." If this is so, concluded Popper, and if a genius like Newton can prove to have been wrong and his knowledge, after two hundred years, can be replaced by a better knowledge, then perhaps there are no such things as truths "true once and for all". It was at this point that he developed his brilliant key idea: "Scientific knowledge is not knowledge; it is only conjectural knowledge." Every scientific theory must count as "true" only for so long as it cannot be refuted by some counter-example or replaced by a better theory. And just for this reason modern society must always be open to critiques and new theories. This applies also, indeed quite especially, to politics. Instead of calling, like Plato, for an ideal state, or pursuing, like Marx and Hegel, "totalitarian" philosophical-historical goals, the scientific method of trial and error must also be applied to politics. Was Popper right? Is all our knowledge merely conjectural knowledge resting on trial and error? And did Plato, Hegel and Marx really pave the way for totalitarianism? Is what we need to improve society really rather the method of "hard science"? Can we solve our problems using Popper's "piecemeal social technology"? Popper gives clear and unmistakable answers. The book appears as part of the popular series "Great Thinkers in 60 Minutes".

In September 2007, more than 100 philosophers came to Prague with the determination to approach Karl Popper’s philosophy as a source of inspiration in many areas of our intellectual endeavor. This volume is a result of that effort. Topics cover Popper’s views on rationality, scientific methodology, the evolution of knowledge and democracy; and since Popper’s philosophy has always had a strong interdisciplinary influence, part of the volume discusses the impact of his ideas in such areas as education, economics, psychology, biology, or ethics. The concept of falsification, the problem of demarcation, the ban on induction, or the role of the empirical basis, along with the provocative parallels between historicism, holism and totalitarianism, have always caused controversies. The aim of this volume is not to smooth them but show them as a challenge. In this time when the traditional role of reason in the Western thought is being undermined, Popper’s non-foundationist model of reason brings the Enlightenment message into a new perspective. Popper believed that the open society was vulnerable, due precisely to its tolerance of otherness. This is a matter of great urgency in the modern world, as cultures based on different values gain prominence. The processes related to the extending of the EU, or the increasing economic globalization also raise questions about openness and democracy. The volume’s aim is to show the vitality of critical rationalism in addressing and responding to the problems of this time and this world.

"In February 1958, the Hermann family began to experience strange events at their home in Seaford, New York. The first occurrences were harmless--just caps popping off of bottles. But soon things escalated. Dishes were smashed, bookshelves toppled over, and objects moved. Could these unexplained events have been the work of a devious poltergeist named Popper?"--

A New York Times reporter’s “vivid” account of the dramatic rise of Bitcoin and how it has led to untold riches for some—and prison terms for others (Financial Times). Shortlisted for the Financial Times and McKinsey Business Book of the Year A New York Times Book Review Editor’s Choice The notion of a new currency, maintained by the computers of users around the world, has been the butt of many jokes, but that has not stopped it from growing into a technology worth billions of dollars, supported by the hordes of followers who have come to view it as the most important new idea since the creation of the Internet. Believers from Beijing to Buenos Aires see the potential for a financial system free from banks and governments. More than just a tech industry fad, Bitcoin has threatened to decentralize some of society’s most basic institutions. An unusual tale of group invention, Digital Gold charts the rise of the Bitcoin technology through the eyes of the movement’s colorful central characters, including an Argentinian millionaire, a Chinese entrepreneur, Tyler and Cameron Winklevoss, and Bitcoin’s elusive creator, Satoshi Nakamoto. “Engrossing.” —Library Journal “An elegant, thrilling tour-de-force. . . .The fast-paced action never stops.” —William D. Cohan, New York Times–bestselling author of Power Failure

Volume 14 in the Major Conservative and Libertarian Thinkers series focuses on Karl Popper, an important and controversial thinker of the 20th century.

This book offers a straightforward account of Sir Karl Popper's views on scientific methodology ranging from Logik der Forschung in 1934 to A World of Propensities in 1990. Part I covers his treatment of the interrelations between metaphysics and science, the fallacies of induction, the method of conjectures and refutations, evolutionary epistemology, the propensity theory of probability, and the interpretation of quantum mechanics. Part II considers the problems of the social sciences, his critiques of historicism and holistic planning, his defence of piecemeal planning on both scientific and humanist grounds, his method of situational logic based on models that use a 'rationality principle', and the roles of institutions, traditions and history. The book is addressed to those who are interested in general problems of scientific method but find it difficult to get a clear or connected view of Popper's important contributions because these have been published over long intervals and have been subject to misinterpretations.

In this ground-breaking new text, Patrick Baert analyses thecentral perspectives in the philosophy of social science,critically investigating the work of Durkheim, Weber, Popper,critical realism, critical theory, and Rorty's neo pragmatism. Places key writers in their social and political contexts,helping to make their ideas meaningful to students. Shows how these authors’ views have practical uses inempirical research. Lively approach that makes complex ideas understandable toupper-level students, as well as having scholarly appeal.

This is the first book to compare Karl Popper and Friedrich Hayek systematically, and critically assess their contribution to the political philosophy of the Open Society. Hayes compares and contrasts their views on three key areas relevant to their political philosophy; first their views on scientific method, their views on philosophy of social science and then their moral philosophy including their meta-ethical views. The author focuses on their contributions to social science methodology, their ethical views about negative utilitarianism and negative rights, and their contrasting views on Utopianism. He finishes by arguing that their versions of liberal political philosophy are both immune to Alastair MacIntyre's critique of liberal individualism and also meet his challenge to the Enlightenment project. Hayes' position is generally controversial in that he defends Popper and Hayek in areas where they are almost universally criticized, namely Hayek's notion of the meaninglessness of social justice and Popper's claim that there is no need for induction in either scientific reasoning or common sense reasoning. One main finding in this book concerns the two major problems that bedevil modern philosophy: induction and the is-ought problem. The author proposes an original solution to the is-ought problem as well to the infinite regress problem.