Karl Popper discovered in 1938 that the unconditional probability of a conditional of the form ‘If A, then B’ normally exceeds the conditional probability of B given A, provided that ‘If A, then B’ is taken to mean the same as ‘Not (A and not B)’. So it was clear (but presumably only to him at that time) that the conditional probability of B given A cannot be reduced to the unconditional probability of the material conditional ‘If A, then B’. (...) I describe how this insight was developed in Popper’s writings and I add to this historical study a logical one, in which I compare laws of excess in Kolmogorov probability theory with laws of excess in Popper probability theory. (shrink)

A brief historical comment on scientific knowledge as Socratic ignorance -- Some critical comments on the text of this book, particularly on the theory of truth Exposition [1933] -- Problem of Induction (Experience and Hypothesis) -- Two Fundamental Problems of the Theory of Knowledge -- Formulation of the Problem -- The problem of induction and the problem of demarcation -- Deductivtsm and Inductivism -- Comments on how the solutions are reached and preliminary presentation of the solutions -- Rationalism and empiricism-deductivism (...) and inductivism -- The possibility of a deductivist psychology of knowledge -- The Problem of Induction -- The infinite regression (Hume's argument) --The inductivist positions -- The Normal-Statement Positions -- The normal-statement positions: naive inductivism, strict positivism and apriorism -- Critique of strict positivism - twofold transcendence of natural laws -- The transcendental method - presentation of apriorism -- Critique of apriorism -- Kant and Fries -- Supplement to the critique of apriorism. (Psychologism and transcendentalism in Kant and Fries.-On the question of the empirical basis.) -- Probability Positions -- The probability positions - subjective belief in probability -- Statements about the objective probability of events -- Probability as an objective degree of validity of universal empirical statements -- One way of more closely defining the concept of the probability of a hypothesis (primary and secondary probability of hypotheses). The concept of simplicity -- The concept of the corroboration of a hypothesis - positivist, pragmatist and probabilistic interpretations of the concept of corroboration -- The infinite regression of probability statements -- Pseudo-Statement Positions -- The pseudo-statement positions: new formulation of the problem -- Natural laws as "instructions for the formation of statements" -- "True - false" or "useful - useless"? Consistent pragmatism --Difficulties of consistent pragmatism -- Tool and schema as purely pragmatic constructs -- Natural laws as propositional functions -- Conventionalism -- The pseudo-statement positions will temporarily be put away: conventionalism -- The three interpretations of axiomatic systems. (The circle of problems surrounding conventionalism) -- Conventionalist implicit and explicit definitions Propositional function and propositional equation -- Conventionalist propositional equations as tautological general implications -- Can axiomatic-deductive systems also be understood as consequence classes of pure propositional functions (of pseudo-statements)? -- The coordinative definitions of empiricism: synthetic general implications -- Conventionalist and empiricist interpretations, illustrated by the example of applied geometry -- Strictly Universal Statements and Singular Statements -- Implication and general implication -- General implication and the distinction between strictly universal and singular statements -- Universal concept and individual concept-class and element -- Strictly universal statements-the problem of induction and the problem of universals -- Comments on the problem of universals -- Back to the Pseudo-Statement Positions -- Return to the discussion of the pseudo-statement positions -- Symmetry or asymmetry in the evaluation of natural laws? -- The negative evaluation of universal statements. Critique of the strictly symmetrical interpretation of pseudo-statements -- An infinite regression of pseudo-statements -- An apriorist pseudo-statement position -- Interpretation of the critique up to this point; comments on the unity of theory and practice -- A last chance for the pseudo-statement positions -- Pseudo-Statement Positions and the Concept of Meaning -- The concept of meaning and logical positivism -- The concept of meaning and the demarcation problem-the fundamental thesis of inductivism -- Critique of the inductivist dogma of meaning -- Fully decidable and partially decidable empirical statements-the antinomy of the knowability of the world. (Conclusion of the critique of the pseudo-statement positions.) -- The dialectical and the transcendental corroboration of the solution -- Is the problem of induction solved? (shrink)

Language & Logic -- Glossary -- Aristotle's syllogisms -- Russell's paradox & Frege's logicism -- profile: Aristotle -- Russell's theory of description -- Frege's puzzle -- Gödel's theorem -- Epimenides' liar paradox -- Eubulides' heap -- Science & Epistemology -- Glossary -- I think therefore I am -- Gettier's counter example -- profile: Karl Popper -- The brain in a vat -- Hume's problem of induction -- Goodman's gruesome riddle -- Popper's conjectures & refutations -- Kuhn's scientific revolutions -- (...) Mind & Metaphysics -- Glossary -- Descartes mind-body problem -- Brentano's intentionality -- Fodor's language of thought -- Parfit's persons -- profile: René Descartes -- Chalmer's zombies -- Zeno's paradoxes -- Kant's left hand -- Theseus' ship -- Laplace's demon, determinism, & free will -- Ryle's ghost in the machine -- Ethics & Political Philosophy -- Glossary -- Aristotle's ethics -- States of nature and the social contract -- Kant's categorical imperative -- profile: Immanuel Kant -- Mill's utilitarianism -- Marx's historical materialism -- The trolley problem -- Religion -- Glossary -- Aquinas' five ways -- Anselm's ontological argument -- profile: Thomas Aquinas -- Epicurus' riddle -- Paley's watchmaker -- Pascal's wager -- Hume against miracles -- Grand Moments -- Glossary -- Socrates' method -- Plato's cave -- Aristotle's four causes -- Lucretius' atomism -- profile: Ludwig Wittgenstein -- Berkeley's idealism -- Kant's synthetic a priori -- Hegel's dialectic -- James' pragmatism -- Moore's common sense -- Wittgenstein's picture theory of language -- Continental Philosophy -- Glossary -- Nietzsche's Superman -- profile: Friedrich Nietzsche -- Derrida's deconstruction -- Heidegger's nothing -- Sartre's bad faith. (shrink)

Zipf's law states that if words of language are ranked in the order of decreasing frequency in texts, the frequency of a word is inversely proportional to its rank. It is very reliably observed in the data, but to date it escaped satisfactory theoretical explanation. This article suggests that Zipf's law may result from a hierarchical organization of word meanings over the semantic space, which in turn is generated by the evolution of word semantics dominated by expansion of meanings and (...) competition of synonyms. A study of the frequency of partial synonyms in Russian provides experimental evidence for the hypothesis that word frequency is determined by semantics. (shrink)

Zipf's law states that if words of language are ranked in the order of decreasing frequency in texts, the frequency of a word is inversely proportional to its rank. It is very reliably observed in the data, but to date it escaped satisfactory theoretical explanation. This article suggests that Zipf's law may result from a hierarchical organization of word meanings over the semantic space, which in turn is generated by the evolution of word semantics dominated by expansion of meanings and (...) competition of synonyms. A study of the frequency of partial synonyms in Russian provides experimental evidence for the hypothesis that word frequency is determined by semantics. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:From the Sacrifice of the Letter to the Voice of TestimonyGiorgio Agamben’s Fulfillment of MetaphysicsJeffrey S. Librett (bio)By denying us the limit of the Limitless, the death of God leads to an experience in which nothing may again announce the exteriority of being, and consequently to an experience which is interior and sovereign. But such an experience, for which the death of God is an explosive reality, discloses as (...) its own secret and clarification, its intrinsic finitude, the limitless reign of the Limit, and the emptiness of those excesses in which it spends itself and where it is found wanting.—Michel Foucault, “Preface to Transgression”Can there be a discourse that, without being a metalanguage or sinking into the unsayable, says language itself and exposes its limits?—Giorgio Agamben, “The Idea of Language”I shall not rest until every German sees that it is a shameful thing to be a lawyer.—Adolf Hitler, speech before theReichstag, April 26, 1942From his early works on, Giorgio Agamben has opposed the thought of no contemporary philosopher more consistently and programmatically than that of Jacques Derrida, whose questioning of phonocentric metaphysics Agamben has tried to replace by a characterization of metaphysics as (what I am calling here) graphocentric. To go back behind the replacement of the voice by the letter is for Agamben to recover the event of language itself, the taking-place of language as Being.1 In his conceptualization of the project for such a recovery, as we shall see, Agamben’s commitment to Heidegger’s fundamental ontology is overdetermined by his investment in the Christian God as logos.This philosophical program in Agamben’s early essays guides his later work on the homo sacer-sovereign relation but also distorts and disturbs the later work in three principal ways. First, it prompts him to propose an exclusively juridicopolitical understanding of the sacredness of the homo sacer, effectively scapegoating the juridical sphere for a more broadly theopolitical problem, while placing the specifically Christian background [End Page 11] of his antinomianism in a misleadingly secular, rational, and universalist light. Symptomatically, in order to accomplish this juridicopolitical reduction Agamben must reject Bataille’s analysis of sacrifice—along with the entire modern anthropological reading of the sacred—out of hand. For this rejection protects his discourse against any sustained confrontation with the importance of the sacrificial dimension for both what he calls the homo sacer and his own approach to law in his theorization of the homo sacer..Second, Agamben’s philosophical program impoverishes the account he provides of the Nazi death camps as an extreme example of the sovereign-homo sacer relation by making it impossible for him to appreciate the importance of Christian antinomianism in the formation of National Socialist ideology. For Agamben’s philosophical orientation requires or presupposes that he ignore or underestimate, first of all, the sacrificially anti-Semitic dimension of Christian antinomianism—the tendency of such antinomianism to make Judaism responsible for the ontological desert into which representation exiles us all. Further, as a consequence of his continuing commitment to this tradition, Agamben cannot see how important the tradition remains, even if in a displaced form, for Nazi anti-Semitism. I argue that Agamben’s animus against the letter blinds him to the Christian and sacrificial dimensions of the Holocaust—he ignores the former and explicitly, emphatically denies the latter dimension—because this animus represents his own commitment to the Christian antinomianism that, in its racialized National Socialist form, attempts to rid itself of the letter by sacrificing not only Judaism but the (biologically, racially construed) Jews. Because his radically antinomian program would become unsettled by his recognition of its important overlap with the ideological bases of National Socialism, Agamben cannot ultimately acknowledge the Christian and sacrificial aspects of the Holocaust.Finally, in Remnants of Auschwitz—his main reading (outside of Homo Sacer) of the significance of the Nazi death camps—Agamben positions “testimony” as the exemplary instance of the speaking of speech, the taking-place of language. The result of the destruction of European Jewry becomes here the revelation of poetic speech as a manifestation of the absolute. Unwittingly, Agamben ends up participating in... (shrink)

Karl Popper is famous for favoring an open society, one in which the individual is treated as an end in himself and social arrangements are subjected to critical evaluation, which he defends largely by appeal to a Kantian ethic of respecting the dignity of rational beings. In this essay, I consider for the first time what the implications of a characteristically African ethic, instead prescribing respect for our capacity to relate communally, are for how the state should operate in an (...) open society. I argue that while an under-appreciated Afro-communal moral foundation does not prescribe a closed society, it supports an open society politics and law of a sort different from the one that Popper specifies. For Popper, the state in an open society should improve social arrangements albeit without seeking to promote a particular conception of the good life, should protect rights that merely serve the function of facilitating individual choice, and should employ majoritarian democracy to be able to avoid unwelcome rulers and policies. On all three counts, I show that a relational ethic typical of the African philosophical tradition, but having broad intuitive appeal, entails different, intuitively attractive approaches to politics and law. (shrink)

Popper's three?world doctrine differs significantly from an earlier position which insisted on a dualism of facts and norms. This dualism, combined with a hostility to that version of psychologism which holds that logical principles are descriptive psychological laws, initially led him to espouse the view that we are free to reject rules of inference as norms shaping our reasoning. However, in some formulations of his recently developed pluralistic epistemology, Popper appears to deny this freedom to the individual. Feyerabend (...) has condemned him for this. My critique conflicts with Feyerabend's, in that I develop an alternative view of the relationship between logic and psychology which retains the compulsive aspect of the third realm, but rejects that version of anti?psychologism which holds that truths of logic do not have normative implications for people's psychological states. More specifically, it is argued that it is logically possible, though logically impermissible, for people to be irrational: the categories of logic are inescapably evaluative and critical. (shrink)

Written in political exile during the Second World War and first published in 1945, Karl Popper's The Open Society and Its Enemiesis one of the most influential books of the twentieth century. Hailed by Bertrand Russell as a 'vigorous and profound defence of democracy', its now legendary attack on the philosophies of Plato, Hegel and Marx exposed the dangers inherent in centrally planned political systems. Popper's highly accessible style, his erudite and lucid explanations of the thought of great (...) philosophers and the recent resurgence of totalitarian regimes around the world are just three of the reasons for the enduring popularity of The Open Society and Its Enemies, and for why it demands to be read both today and in years to come. This is the second of two volumes of The Open Society and Its Enemies. (shrink)

Karl Popper's critique of theoretical history remains formidable but contains serious flaws. Popper held erroneous views about the practice of the natural sciences and created overly severe strictures for theoretical statements in the social sciences. General theory and general theoretical statements play a legitimate role in the social sciences. Merton has promoted middle-range theories and models and Lakatos multiple ontologies. One can answer Popper's criticisms of either the impossibility or triviality of long-term historical laws by searching for (...) stable constellations of local or middle-range laws rather than a universal law. Moreover, the successful use in the social sciences of various types of scales of measurement rather than an absolute scale shows that quantitative analysis is possible in history. Investigators need to find the boundaries, the frameworks of feasibility, in which historical trends and laws operate. Popper's maximalism plays into the irrationalist trends that he himself deplored. If historical investigators and theoreticians set appropriate goals for theoretical history, they can practice their discipline responsibly and find meanings, if not a single meaning, in history. (shrink)

ABSTRACT The individual-community relationship has always been one of the most fundamental topics of social sciences. In sociology, this is known as the micro-macro relationship while in economics it refers to the processes, through which, individual actions lead to macroeconomic phenomena. Based on philosophical discourse and systems theory, many sociologists even use the term "emergence" in their understanding of micro-macro relationship, which refers to collective phenomena that are created by the cooperation of individuals, but cannot be reduced to individual actions. (...) "Emergence" theories attempt to explain the nature of society as a complex system by examining how individuals and their relationships lead to the creation of integrated and macro-social phenomena such as markets, educational systems, cultural beliefs, and shared social practices. As a prelude to activity, every researcher has to answer the question from the methodological point of view, how is it possible to study the behavior of social groups and how can we gain knowledge about the laws related to social groups? Anyone who deals with humanities and social sciences or any reality and phenomenon that affects human beings, inevitably deals with the reality that is emerging. In fact, emergence occurs when one level of reality emerges radically from another level. Examples of emergent levels of reality include how the mind emerges from the body; or the way society emerges from human beings. Therefore, when there is an emerging factor, different scientific disciplines should be used, because it is inevitable to talk about social affairs, psychology and neurobiology, as well as physical and even chemical. -/- INTRODUCTION Since its beginning in the 19th century, sociology has faced the fundamental question of what a social phenomena stands for? At a glance, sociologists deal with the study of social groups, collective behavior, institutions, social structures, social networks, and social dynamics, and ultimately all such phenomena are composed of individuals. Therefore, social phenomena seem to have no independent ontological status, and in this case, sociology is ultimately about reducible individuals. Different approaches about the micro-macro relationship, using the concept of "emergence", argue that although collective phenomena are created by individuals, they cannot be reduced to individual action. The term "emergence" is used to distinguish "emergent results" from " Procedural results". Results are called Procedural that can only be calculated by adding or subtracting the causes that act together. On the contrary, they are emergent outcomes that are qualitatively novel compared to the causes from which they originate. An example of such emergent results is mental characteristics that emerge from neural processes, but are not considered among the characteristics of neural processes of components - which are their origin. Philosophical debates about emergentism and reductionism focus on the mind-brain relationship, but as many philosophers have noted, they can be generalized to apply to any hierarchical set of features. The cognitive revolution reactivated a 19th century controversy between theorists of Identity and dualism. The theorists of Identity believe in reductionist materialism and elimination of metaphysics, according to which the mind is nothing more than the biological, while the dualists believe that the mind and the brain are distinct from each other. Emergence has been considered as a third way between the theories of Identity and dualism. -/- METHODOLOGY Interdisciplinarity Is fundamentally indicated by the dominance of open systems as well as social and emerging systems at different levels. Therefore, as long as we are facing a new emergentism, there will necessarily be different fields and an interdisciplinary method. The commonality of social sciences and cognitive sciences on the issue of emergence provides the possibility of interaction and exchange of concepts between these two for deeper research. Therefore, in this research, apart from the concepts of Subvenience and downward causation, we have used multiple realization and wildly disjunctive, which are used to explain the emerging concept in cognitive sciences, including neurobiology, psychology, and philosophy. For analytical and interdisciplinary approaches, after examining the concepts of subvenience, and wildly disjunctive, Individualistic and collectivist emergentism have been reviewed. And then their adequacy is criticized and evaluated in meeting strong emergence conditions. -/- FINDINGS Philosophers of the mind have been able to define the conditions of irreducibility and downward causation, which are essential for strong emergence, by using the principle of subvenience with the help of multiple realization and wildly disjunctive principles. Therefore, by definition, emergentist individualism suffers from the problem of how to explain downward causality and irreducibility, and emergentist collectivism faces the challenge of reification. The analysis of the challenges facing the two methodological approaches of individualism and collectivism leads us to three unresolved issues about the emerging phenomenon, which are realism, downward causality, and mechanism. Despite the differences in the stances of these two approaches regarding the aforementioned triple problems, individualists and collectivists both agree that some social characteristics are reducible; and some others are irreducible due to their complexity, the determination of which, depends on the case study of the mechanism of emergence of each social characteristic. -/- CONCLUSION An emergence that is consistent with reductionism is called a weak emergence. And strong emergence includes the principle of irreducibility and downward causality. According to strong emergence, the characteristics of social phenomena have downward causal power, which cannot be reduced to the causal forces. The principle of subvenience, together with multiple realization and wildly disjunctive, can provide the conditions of irreducibility and downward causality, which are essential conditions of strong emergence. Based on the philosophical analysis of two methodological approaches, individualist and collectivist, it can be concluded that emergentist individualism suffers from the problem of how to explain downward causality and irreducibility, and reification collectivism faces the challenge of reification. The analysis of the problems faced by these two approaches leads us to three unresolved issues, which are realism, downward causality, and mechanism. individualist emergentists acknowledge the existence of emergent social characteristics, but despite this, they believe that these characteristics are not real but merely analytical constructs that require explanation based on individuals and their mutual actions. But collectivists argue that emergentism yields a categorical ontology and supports social realism. They accept the dependence of social characteristics on individuals, but claim that social entities and structures are ontologically independent. Individualists and collectivists both agree that some social characteristics are reducible; and others are irreducible due to their complexity; and the only way to recognize this is to engage in empirical studies of the mechanisms and temporal processes of "emergence" that create social characteristics. -/- NOVELTY The newness of this compact article is as follows: a) Presenting an interdisciplinary approach using the analysis of philosophy of cognitive sciences, including the philosophy of mind, neurobiology and psychology to formulate the issue of social emergence; b) Criticizing individualist and collectivist methodological approaches to the issue of social emergence and explaining the sufficiency and shortcomings of both in providing weak and strong emerging conditions; c) Explaining and categorizing the challenges facing methodological approaches in explaining the phenomenon of social emergence, in three categories: realism, downward causality, and mechanism. BIBLIOGRAPHY Beckermann, A., Flohr, H., & Kim, J. (eds.) (1992). Emergence or reduction? Essays on the prospects of nonreductive physicalism. Berlin: Walter de Gruyter. Bhaskar, R. (1979). The possibility of Naturalism. New York: Routledge. Bhaskar, R., Danermark, B. & Price, L. (2018). Interdisciplinarity and wellbeing: A critical realist general theory of interdisciplinarity. London and New York: Routledge. Blau, P.M. (1981). Introduction: diverse views of social structure and their common denominator. In Blau, P.M. & Merton, R.K. (eds.), Continuity in Structural Inquiry (pp. 1–23). Beverly Hills: Sage. Blau, P.M. (1987). Microprocess and macrostructure. In K.S. Cook (ed.), Social Exchange Theory (pp. 83–100). Newbury Park, CA: Sage. Brooks, R.A., & Maes, P. (eds). (1994). Artificial life IV; proceedings of the Fourth International Workshop on the Synthesis and Simulation of Living Systems. Cambridge, Mass: MIT Press. Clark, A. (1997). Being there: Putting brain, body, and world together again. Cambridge, Mass.: MIT Press. Coleman, J. S. (1987). Microfoundations and macrosocial behavior. In: J. C. Alexander, B. Giesen, R. Munch, & Neil J. Smelser (Eds.). The Micro-Macro Link (pp. 153–73). Berkeley: University of California. Coleman, J. S. (1990). Foundations of social theory. Cambridge, MA: Harvard University Press. Elster, J. (1985). Making sense of Marx. New York: Cambridge University Press. Fodor, J.A. (1974). Special sciences (Or: The disunity of science as a working hypothesis). Synthese, 28(2), 97–115. Fodor, J.A. (1989). Making mind matter more. Philosophical Topics, 17, 59-79. Giddens, A. (1984). The constitution of society: Outline of the theory of structuration. Berkeley: University of California Press. Hempel, C.G. (1965). Aspects of scientific explanation and other essays in the philosophy of science. New York: The Free Press. Horgan, T. (1993). From supervenience to superdupervenience: meeting the demands of a material world. Mind, 102, 555-586. Humphreys, P. (1997). How properties emerge”. Philosophy of Science, 64, 1-17. Kim, J. (1999). Making sense of emergence. Philosophical Studies, 95, 3–36. Kincaid, H. (1997). Individualism and the unity of science. New York: Rowman & Littlefield. Lewis, D.K. (1986). The plurality of worlds. Oxford: Oxford University Press. Nigel, G., & Conte, R. (eds.) (1995). Artificial societies; The computer simulation of social life. London: UCL Press. O’Connor, T. (1994). Emergent properties. American Philosophical Quarterly, 31, 91-104. Popper, K.R. (1968). Conjectures and refutations: The Growth of Scientific Knowledge. New York: Harper & Row. Sawyer, R. K. (2001). Emergence in sociology: contemporary philosophy of mind and some implications for sociological theory. American Journal of Sociology, 107, 551-585. Sawyer, R. K. (2004). The mechanisms of emergence. Philosophy of the Social Sciences, 34, 260–282. Sawyer, R. K. (2005). Social emergence: societies as complex systems. Cambridge: Cambridge University Press. Sawyer, R.K. (2003). Nonreductive individualism: Part 2, Social causation. Philosophy of the Social Sciences, 33, 203–224. Winch, P. (1993). The idea of a social science and its relation to philosophy‭ (SAMT, Trans.). Tehran, Iran: SAMT. (shrink)

Described by the philosopher A.J. Ayer as a work of 'great originality and power', this book revolutionized contemporary thinking on science and knowledge. Ideas such as the now legendary doctrine of 'falsificationism' electrified the scientific community, influencing even working scientists, as well as post-war philosophy. This astonishing work ranks alongside _The Open Society and Its Enemies_ as one of Popper's most enduring books and contains insights and arguments that demand to be read to this day.

Karl Popper's critique of theoretical history remains formidable but contains serious flaws. Popper held erroneous views about the practice of the natural sciences and created overly severe strictures for theoretical statements in the social sciences. General theory and general theoretical statements play a legitimate role in the social sciences. Merton has promoted middle-range theories and models and Lakatos multiple ontologies. One can answer Popper's criticisms of either the impossibility or triviality of long-term historical laws by searching for (...) stable constellations of local or middle-range laws rather than a universal law. Moreover, the successful use in the social sciences of various types of scales of measurement rather than an absolute scale shows that quantitative analysis is possible in history. Investigators need to find the boundaries, the frameworks of feasibility, in which historical trends and laws operate. Popper's maximalism plays into the irrationalist trends that he himself deplored. If historical investigators and theoreticians set appropriate goals for theoretical history, they can practice their discipline responsibly and find meanings, if not a single meaning, in history. (shrink)

in a scientific way, and takes the patient and his family into his confidence. Thus he learns something from the sufferer, and at the same time instructs the invalid to the best of his power. He does not give his prescriptions until he has won the patient's support, and when he has done so, he steadilY aims at producing complete restoration to health by persuading the sufferer in to compliance (Laws 4. 720 b-e, [28]). This passage shows the perennial (...) nature of the problems of treating the patient as a person. It shows as well the historical'depth of philosophical interest in medicine. The history of philosophy includes more reflections upon medical ethics than the casual reader might suspect. Many of these reflections are pertinent to contemporary issues such as abortion and population control. Plato, for example, recommends abortion in cases of incest (Republic 5. 461c); and Aristotle argues for letting seriously deformed children die, while forbidding infanticide as a means of popUlation control, suggesting instead the use of early abortions. 'As to the exposure in rearing of children, let there be a law that no deformed child shall live, but that on the ground of an excess in the number of children... let abortion be procured before sense and life have begun; what mayor may not be lawfully done in these cases depends on the question of life and sensation' (Politics VII, 16,335 b20-26, [4]). (shrink)

Karl Popper argued in 1974 that evolutionary theory contains no testable laws and is therefore a metaphysical research program. Four years later, he said that he had changed his mind. Here we seek to understand Popper’s initial position and his subsequent retraction. We argue, contrary to Popper’s own assessment, that he did not change his mind at all about the substance of his original claim. We also explore how Popper’s views have ramifications for contemporary discussion of the nature of (...) laws and the structure of evolutionary theory. (shrink)

Reconstructing Popper's research programme for the Human Sciences, Noretta Koertge (Inquiry, Vol. 18 [1975]) has given a deductive?nomological account of explanations of actions by means of a Rationality Principle. It is argued here that such a Rationality Principle is fundamentally redundant. Neither is it logically necessary in order to deduce a cognitive action?explanandum, nor can it be given a semantic non?empty interpretation, at least not within Koertge's own syllogism. Any attempt to save the Rationality Principle as unfalsifiablc but nevertheless (...) indispensable for action explanations is rejected in the light of possible alternative action explanations by empirical and therefore in principle falsifiable psychological laws. (shrink)

One of the most important books of the twentieth century, Karl Popper's The Open Society and Its Enemies is an uncompromising defense of liberal democracy and a powerful attack on the intellectual origins of totalitarianism. Popper was born in 1902 to a Viennese family of Jewish origin. He taught in Austria until 1937, when he emigrated to New Zealand in anticipation of the Nazi annexation of Austria the following year, and he settled in England in 1949. Before the annexation, (...) Popper had written mainly about the philosophy of science, but from 1938 until the end of the Second World War he focused his energies on political philosophy, seeking to diagnose the intellectual origins of German and Soviet totalitarianism. The Open Society and Its Enemies was the result. An immediate sensation when it was first published in two volumes in 1945, Popper's monumental achievement has attained legendary status on both the Left and Right and is credited with inspiring anticommunist dissidents during the Cold War. Arguing that the spirit of free, critical inquiry that governs scientific investigation should also apply to politics, Popper traces the roots of an opposite, authoritarian tendency to a tradition represented by Plato, Marx, and Hegel. In a substantial new introduction written for this edition, acclaimed political philosopher Alan Ryan puts Popper's landmark work in biographical, intellectual, and historical context. Also included is a personal essay by eminent art historian E.H. Gombrich, in which he recounts the story of the book's eventual publication despite numerous rejections and wartime deprivations. (shrink)

Human rights discourse has been likened to a global lingua franca, and in more ways than one, the analogy seems apt. Human rights discourse is a language that is used by all yet belongs uniquely to no particular place. It crosses not only the borders between nation-states, but also the divide between national law and international law: it appears in national constitutions and international treaties alike. But is it possible to conceive of human rights as a global language or lingua (...) franca not just in a figurative or metaphorical sense, but in a literal or linguistic sense as a legal dialect defined by distinctive patterns of word choice and usage? Does there exist a global language of human rights that transcends not only national borders, but also the divide between domestic and international law? Empirical analysis suggests that the answer is yes, but this global language comes in at least two variants or dialects. New techniques for performing automated content analysis enable us to analyze the bulk of all national constitutions over the last two centuries, together with the world’s leading regional and international human rights instruments, for patterns of linguistic similarity and to evaluate how much language, if any, they share in common. Specifically, we employ a technique known as topic modeling that disassembles texts into recurring verbal patterns. The results highlight the existence of two species or dialects of rights talk—the universalist dialect and the positive-rights dialect—both of which are global in reach and rising in popularity. The universalist dialect is generic in content and draws heavily on the type of language found in international and regional human rights instruments. It appears in particularly large doses in the constitutions of transitional states, developing states, and states that have been heavily exposed to the influence of the international community. The positive-rights dialect, by contrast, is characterized by its substantive emphasis on positive rights of a social or economic variety, and by its prevalence in lengthier constitutions and constitutions from outside the common law world, especially those of the Spanish-speaking world. Both dialects of rights talk are truly transnational, in the sense that they appear simultaneously in national, regional, and international legal instruments and transcend the distinction between domestic and international law. Their existence attests to the blurring of the boundary between constitutional law and international law. (shrink)

My work is concerned mainly with an abstract subject: the problem of human knowledge and, in particular, of scientific knowledge.I am an optimist. I am an optimist in a world where among the intelligentsia it has become a strict rule that one must be a pessimist if one wants to be “in”. But I do believe that our age is not so bad as is generally maintained; I do believe that it is better and more beautiful than its reputation. A (...) quarter of a century ago, I gave a lecture, the title of which sounds today even more provocative than it did then: “The History of our Time: An Optimist's View”. (shrink)

Marxism was indeed vulgarized due to scientism in the 20th century, which even limits the development of Chinese social theories nowadays. This paper put forward the idea that it was serious misunderstanding to interpret Marx as prophet or inventor like empiricists who regard finding out eternal laws as the goal of science. In fact, Marx did not propose any so-called “natural laws of historical development”. He articulated that the only thing worth to do was to take note of (...) what happened before his eyes and to become its mouthpiece. Thus, to understand science in the face of social practice, to analyze everything historically and never to thrust “eternal” laws in any era should be taken as the core of Marx’s new science, which is very important to China today. (shrink)

This is a short paper covering my own views on the methods and reasons behind the teaching of medical ethics. All the whys and wherefores are discussed and some conclusions reached. This paper is given from a junior doctor's viewpoint but could equally apply to many others.

Described by the philosopher A.J. Ayer as a work of 'great originality and power', this book revolutionized contemporary thinking on science and knowledge. Ideas such as the now legendary doctrine of 'falsificationism' electrified the scientific community, influencing even working scientists, as well as post-war philosophy. This astonishing work ranks alongside The Open Society and Its Enemies as one of Popper's most enduring books and contains insights and arguments that demand to be read to this day.

This is a first attempt at consolidating and extending the lists of biographies of historians of science compiled by George Sarton, Aldo Mieli and François Russo. In doing so, a systematic examination has been made of the Dictionary of scientific biography, and of the relevant parts of the Isis cumulative bibliography and Kenneth May's Bibliography and research manual of the history of mathematics. Material for a supplement is being collected. Readers are invited to send additional material along with their comments.

The problem of idealization in empirical sciences is very rarely taken up in works concerned with the methodology of those sciences. It seems to be common knowledge that in advanced natural sciences references are made to concepts such as “perfectly rigid body,” “material point,” “perfect gas,” etc., but it remains a fact that the most important methodological concepts, concepts which have determined the present-day form of the philosophy of science, have been advanced without regard to the peculiarities of the procedure (...) mentioned above. And yet a moment's consideration suffices to raise doubts as to Carnap's physicalism and/or Popper's falsificationism if we just realize the trivial and commonly known truth that empirical sciences resort to idealizationism. For how are we to imagine a reduction of idealizational concepts to observation terms? And how are we to imagine that theorems which include idealizational concepts imply observation statements which refute, or at least are at variance with, those theorems? But it is a fact that such doubts have neither been raised by the authors of the conceptions mentioned above, nor have they been raised against them. (shrink)

According to the received view, the regularity “All F’s are G” is a real law of nature only if it supports a counterfactual conditional “If x were an F (but actually it is not), it would be a G”. Popper suggested a different approach -- universal generalisations differ from accidental generalisations in the structure of their terms. Terms in accidental generalisations are closed, extensional and terms in laws of nature are open, strictly universal, intensional. But Popper failed to develop (...) this point and used a mistaken and unnatural interpretation of counterfactual assumptions in order to defend the view that both laws of nature and accidental generalisations support counterfactuals. The idea that terms in laws of nature stand for intensions was developed twenty-five years later in the so called DTA theory, which explains laws of nature as relations between properties. (shrink)

The author submits that Popper's social philosophy rests on seven pillars: rationality (both conceptual and practical), individualism (ontological and methodological), libertarianism, the nonexistence of historical laws, negative utilitarianism ("Do no harm"), piecemeal social engineering, and a view on social order. The first six pillars are judged to be weak, and the seventh broken. In short, it is argued that Popper did not build a comprehensive, profound, or even consistent system of social philosophy on a par with his work (...) in epistemology. Still, he did make some important contributions to the field, such as unveiling the philosophical roots of totalitarianism and defending social engineering against both revolutionists and conservatives. (shrink)

This classic remains one of Karl Popper's most wide-ranging and popular works, notable not only for its acute insight into the way scientific knowledge grows, but also for applying those insights to politics and to history.

This article deals with the housing framework of laws, that is, constitutions. It distinguishes between constitution referring to the de jure, formal, written book of laws and codes that assume supreme authority within any structure, and constitution which defines a body of informal, conditional rules and laws that do not have supreme authority but are abided by, owing to various objective, subjective factors. Constitution reflects the gap between aspiration and actuality, and constitution attracts a higher degree of (...) compliance and implementation. Studies have indeed found a negative relationship between formal rights protection and actual rights observance. The article reveals that rights guarantees are more prone to failure than success as they depend substantially on environmental and institutional conditions. This article emphasizes a symbiosis between judicialization and constitutionalization while a policy question needs to be judicial in nature if the judiciary has to decide on it. (shrink)

In France, John Baptist Say has the merit of producing a very superior work on the subject of Political Economy. His arrangement is luminous, ideas clear, style perspicuous, and the whole subject brought within half the volume of [Adam] Smith's work. Add to this considerable advances in correctness and extension of principles.

In this long-awaited volume, Jeremy Shearmur and Piers Norris Turner bring to light Popper's most important unpublished and uncollected writings from the time of The Open Society until his death in 1994. After The Open Society: Selected Social and Political Writings reveals the development of Popper's political and philosophical thought during and after the Second World War, from his early socialism through to the radical humanitarianism of The Open Society. The papers in this collection, many of which are (...) available here for the first time, demonstrate the clarity and pertinence of Popper's thinking on such topics as religion, history, Plato and Aristotle, while revealing a lifetime of unwavering political commitment. After The Open Society illuminates the thought of one of the twentieth century's greatest philosophers and is essential reading for anyone interested in the recent course of philosophy, politics, history and society. (shrink)

The integration of digital phenotyping in psychiatry promises unprecedented insights into mental health, particularly in college settings where mental well-being is a growing concern. The COVID-19...

_Conjectures and Refutations_ is one of Karl Popper's most wide-ranging and popular works, notable not only for its acute insight into the way scientific knowledge grows, but also for applying those insights to politics and to history. It provides one of the clearest and most accessible statements of the fundamental idea that guided his work: not only our knowledge, but our aims and our standards, grow through an unending process of trial and error.

_Conjectures and Refutations_ is one of Karl Popper's most wide-ranging and popular works, notable not only for its acute insight into the way scientific knowledge grows, but also for applying those insights to politics and to history. It provides one of the clearest and most accessible statements of the fundamental idea that guided his work: not only our knowledge, but our aims and our standards, grow through an unending process of trial and error.

On its publication in 1957, _The Poverty of Historicism_ was hailed by Arthur Koestler as 'probably the only book published this year which will outlive the century.' A devastating criticism of fixed and predictable laws in history, Popper dedicated the book to all those 'who fell victim to the fascist and communist belief in Inexorable Laws of Historical Destiny.' Short and beautifully written, it has inspired generations of readers, intellectuals and policy makers. One of the most important books (...) on the social sciences since the Second World War, it is a searing insight into the ideas of this great thinker. (shrink)

‘If in this book harsh words are spoken about some of the greatest among the intellectual leaders of mankind, my motive is not, I hope, to belittle them. It springs rather from my conviction that, if our civilization is to survive, we must break with the habit of deference to great men.’ - Karl Popper, from the Preface Written in political exile during the Second World War and first published in two volumes in 1945, Karl Popper’s The Open Society and (...) Its Enemies is one of the most influential books of all time. Hailed by Bertrand Russell as a ‘vigorous and profound defence of democracy’, its now legendary attack on the philosophies of Plato, Hegel and Marx exposed the dangers inherent in centrally planned political systems and through underground editions become an inspiration to lovers of freedom living under communism in Eastern Europe. Popper’s highly accessible style, his erudite and lucid explanations of the thoughts of great philosophers and the recent resurgence of totalitarian regimes around the world are just three of the reasons for the enduring popularity of The Open Society and Its Enemies and why it demands to be read today and in years to come. (shrink)

Knowledge of residual perturbations in the orbit of Uranus in the early 1840s did not lead to the refutation of Newton's law of gravitation but instead to the discovery of Neptune in 1846. Karl Popper asserts that this case is atypical of science and that the law of gravitation was at least prima facie falsified by these perturbations. I argue that these assertions are the product of a false, a priori methodological position I call, 'Weak Popperian Falsificationism'. Further, on the (...) evidence the law was not prima facie false and was not generally considered so by astronomers at the time. Many of Popper's commentators presuppose WPF and their views on this case and its implications for scientific rationality and method suffer from this same defect. (shrink)

The basic theme of Popper's philosophy--that something can come from nothing--is related to the present situation in physical theory. Popper carries his investigation right to the center of current debate in quantum physics. He proposes an interpretation of physics--and indeed an entire cosmology--which is realist, conjectural, deductivist and objectivist, anti-positivist, and anti-instrumentalist. He stresses understanding, reminding us that our ignorance grows faster than our conjectural knowledge.

At the age of eight, Karl Popper was puzzling over the idea of infinity and by fifteen was beginning to take a keen interest in his father's well-stocked library of books. Unended Quest recounts these moments and many others in the life of one of the most influential thinkers of the twentieth century, providing an indispensable account of the ideas that influenced him most. As an introduction to Popper's philosophy, Unended Quest also shines. Popper lucidly explains the central ideas (...) in his work, making this book ideal for anyone coming to Popper's life and work for the first time. (shrink)