Engineering deals with different problem situations than science, and theories in engineering are different to theories in science. So, the growth of knowledge in engineering is also different to that in science. Nonetheless, methodological issues in engineering epistemology can be explored by adapting frameworks already established in the philosophy of science. In this paper I use critical rationalism and Popper’s three worlds framework to investigate error elimination and the growth of knowledge in engineering. I discuss engineering failure arising (...) from the falsification of engineering theories, and present taxonomies of the sources of falsification and responses to falsification in engineering. From this I discuss contexts of research and design in engineering, ad hoc rescue of engineering theories, and engineering assurance. (shrink)

In his last book, Agassi reiterates Critical Rationalism as a full-fledged philosophy of life. He criticizes Paternalism and Relativism as degenerative, and even pathological, attempts to grant life a meaning, and suggests, in their place, that fallibilism is the minimal condition for a meaningful life.

In his book The Retreat to Commitment Professor Bartley raised an important problem: can rationalism can rationalism be held in a rational way, that is, in a way that complies with its own requirements? Or is there bound to be something irrational in the rationalist's position? Briefly, Hartley's answer was that an element of irrationalism is involved in extant versions of rationalism; however, Bartley proposed a new version of rationalism that can, he claimed, be held in (...) a way that is rational according to its own account of rationality. Bartley called this ‘Comprehensively Critical Rationalism’. (shrink)

David Miller elegantly and provocatively reformulates critical rationalism—the revolutionary approach to epistemology advocated by Karl Popper—by answering its most important critics. He argues for an approach to rationality freed from the debilitating authoritarian dependence on reasons and justification. "Miller presents a particularly useful and stimulating account of critical rationalism. His work is both interesting and controversial... of interest to anyone with concerns in epistemology or the philosophy of science." —Canadian Philosophical Reviews.

The paper deals with the ethical-moral dimension of Popper’s critical rationalism, which is the less analyzed aspect of his philosophy. Critical rationalism is not without assumptions. As a life attitude, it is actualized on the basis of one’s moral preferences based rather on assumptions than on critical reasonableness. Critical rationalism does not exclude logical argumentation and reasoning, but the adoption of them is predominantly the result of an individual moral decision and choice, based, (...) paradoxically enough, on an irrational belief in reason. The author considers this attitude to be productive, as it emphasizes individual moral responsibility. Nobody is able to persuade us about the relevance of what we don’t want to adopt and apply. Thus we find ourselves in the sphere of personal morality. (shrink)

Engineering is often said to be ‘scientific’, but the nature of knowledge in engineering is different to science. Engineering has a different ontological basis—its theories address different entities and are judged by different criteria. In this paper I use Popper’s three worlds ontological framework to propose a model of engineering theories, and provide an abstract logical view of engineering theories analogous to the deductive-nomological view of scientific theories. These models frame three key elements from definitions of engineering: requirements, designs of (...) artefacts, and theories for reasoning about how artefacts will meet requirements. In a subsequent paper I use this ontological basis to explore methodological issues in the growth of engineering knowledge from the perspective of critical rationalism. (shrink)

Critical Rationalism has become an influential philosophy in many areas including a great number of scientific disciplines. Yet only few studies have been devoted to the role of the philosophy of Sir Karl Popper in the vast field of education. This volume undertakes to fill this gap. Leading scholars in the educational science and in the philosophy of education have critically written for this volume in an attempt to elaborate Popper's methodological and socio-political views and confront them with (...) a globally relevant spectrum of scientific objectives and cultural values. Among the topics discussed are moral values, education for freedom and its consequences for the student, and the critical attitude in political education. Attention is also paid to the historiography of this significant philosophical movement. Regarding pedagogical research, the empirical paradigm, the falsificatory approach to educational research, the complex relationship between educational theory and practice as well as the problem of value-neutrality in educational science are objects of critical analysis. (shrink)

This book is a first attempt to cover the whole area of aesthetics from the point of view of critical rationalism. It takes up and expands upon the more narrowly focused work of E. H. Gombrich, Sheldon Richmond, and Raphael Sassower and Louis Ciccotello. The authors integrate the arts into the scientific world view and acknowledge that there is an aesthetic aspect to anything whatsoever. They pay close attention to the social situatedness of the arts. Their aesthetics treats (...) art as emerging from craft in the form of luxurious and playful challenge to the audience. In developing it they place emphasis on the number of questions and claims that can be settled by appeal to empirical facts; on the historical character of aesthetic judgements; and on the connection of aesthetic truth to true love and true friendship, i.e. fidelity and integrity, not to informative truth. (shrink)

_Popper’s Critical Rationalism_ presents Popper’s views on science, knowledge, and inquiry, and examines the significance and tenability of these in light of recent developments in philosophy of science, philosophy of probability, and epistemology. It develops a fresh and novel philosophical position on science, which employs key insights from Popper while rejecting other elements of his philosophy. Central theses include: Crucial questions about scientific method arise at the level of the group, rather than that of the individual. Although criticism is (...) vital for science, dogmatism is important too. Belief in scientific theories is permissible even in the absence of evidence in their favour. The aim of science is to eliminate false theories. Critical rationalism can be understood as a form of virtue epistemology. (shrink)

‘Post-truth’ has become a buzzword for numerous current crises: the fragmentation of the media landscape, the ongoing debate about ‘fake news’, the loss of trust in science, etc. Although these crises take place in society, it is claimed that the roots of post-truth can be traced back to the history of philosophy. Occasionally, it is asserted that Karl Popper’s critical rationalism gave rise to post-truth: His rejection of verificationism has limited truth claims in the realm of science. Given (...) the absence of infallible evidence and certainty, critical rationalism calls for challenging scientific authority. I argue that post-truth is compatible with critical rationalism from an epistemological point of view, considering that both positions are critical of certainty. However, in critical rationalism, fallibilism, responsibility, and the idea of criticism are combined, and in this respect, it offers a possible way to overcome the problems that are associated with post-truth. This treatment of the problems of post-truth results from the recognition of moral responsibility to take action on the basis of a hypothesis that remains open to revision. (shrink)

According to Karl Popper’s critical rationalism, criticism is the only way we have of systematically detecting and learning from our mistakes so as to get nearer to the truth. Meanwhile, it is arguable that the emphasis of Confucianism on creating a hierarchical and harmonious society can easily lead to submission rather than opposition, producing a conformist rather than critical mind. A question arises here as to whether Confucianism tends to denigrate criticism and thus run counter to (...) class='Hi'>critical rationalism. In this paper, I first argue that Confucianism prizes criticism and critical discussion, for which ample justification can be found in Confucian classics. Then I compare Confucianism with critical rationalism and assess the compatibility between them. (shrink)

La noción de interpretación desarrollada en el racionalismo crítico de Karl R. Popper muestra atributos específicos que la distinguen de modo sustancial de la interpretación constitutiva de la experiencia que tanto N. R. Hanson como Th. Kuhn defienden en sus respectivas propuestas. Se muestra que la interpretación del modelo popperiano queda atrapada en una epistemología de corte empirista que la separa de modo radical de toda hermenéutica filosófica. The notion of interpretation developed in the critical rationalism of Karl (...) R. Popper displays specific attributes that substantially distinguish it from the constituent interpretation of experience defended in both N. R. Hanson and T. Kuhn proposals. The article shows that the interpretation of Popper's model is trapped in an empiricist epistemology that radically separates it from all hermeneutic philosophy. (shrink)

‘What distinguishes science from all other human endeavours is that the accounts of the world that our best, mature sciences deliver are strongly supported by evidence and this evidence gives us the strongest reason to believe them.’ That anyway is what is said at the beginning of the advertisement for a conference on induction at a celebrated British seat of learning in 2007. It shows how much critical rationalists still have to do to make known the message of Logik (...) der Forschung concerning what empirical evidence is able to do and what it does. (shrink)

Through his phenomenological approach, Husserl criticized the situation of science and called it a crisis. He aimed to suggest a way out of this crisis by presenting a philosophical program. However, restoring philosophy to its ancient unifying situation, saving science from this crisis, and giving it a human face, requires, according to critical rationalism, to consider the objectivity and rationality of science. Ignoring these considerations puts science on an incorrect and inconvenient path. These considerations require a revision of (...) Husserl’s essentialism and justificationsim, and placing truth as the aim of science. (shrink)

Has the theory of rationality as ‘openness to criticism’ solved the problem of ‘rational belief in reason’? This is the main question the present article intends to address. I respond to this question by arguing that the justified true belief account of knowledge has prevented Karl Popper’s critical and William Bartley’s pan-critical rationalism from solving the problem of rational belief in reason. To elaborate this response, the article presents its arguments in three stages: First, it argues that (...) the idea of objective knowledge as justified true belief leads to the equation of objective knowledge with justification. Hence, if we base the theory of critical rationalism, as openness to criticism, upon such a conception of knowledge, our theory of rationality involves in infinite regress of proofs. Second, it argues that Popper describes critical rationalism as an ‘irrational attitude’ of openness to criticism because the rationalist cannot justify his belief in reason by argument or experience. Thus, since Popper assumes that ‘a belief in reason’ must be justified in order to be ‘rational’ he cannot lead to a solution for the problem of rational belief in reason. Third, it argues that, like Popper’s critical rationalism, Bartley’s pan-critical rationalism originates in the justified true belief account of knowledge, however, not because Bartley defines critical rationalism as irrational faith in reason, but because his theory does not tell us how an ‘open’ belief in reason is to be refuted logically. The reason for this failure is that Bartley uses Popper’s epistemology of science to define the conception of criticism. While Popper and Bartley are recognized as the non-justificationist philosophers of science and rationality, this article tries to reveal that the idea of objective knowledge as justified true belief has prevented them from showing how ‘a rational belief in reason’ can be defended by argument. The article also briefly shows the consequence of this study for a notable change in the logical foundations of science. (shrink)

This article revisits Karl Popper’s falsificationist methodology with respect to three tasks. The first is to illuminate and systematize Popper’s methodological views in light of his core epistemological commitments. A second and related objective is to gauge which aspects of falsificationism should be identified as “conventionalist”—a label that Popper himself uses (albeit with qualifications) but that is compromised by and, thus, stands in need of elucidation because of Popper’s idiosyncratic understanding of conventionalism. Third, by elaborating Popper’s virtue-epistemological, dialogical model of (...) rationality, I show how Popper’s conventionalism, fallibilism, and critical rationalism form a coherent system. This system allows Popper to accord science the status of a privileged source of knowledge—without naïve appeal to authority. My systematization of Popper’s views yields an intrinsically and exegetically more satisfactory reading of Popper’s falsificationism than usual presentations. Thanks to its marked flexibility and methodological liberalism, it bypasses many standard objections but still offers sound and relevant methodological advice. With its “virtue-methodological” thrust, Popper sketches an original and promising approach to methodology, the fertility of which deserves further exploration for contemporary debates. (shrink)

Hopefully, critical rationalism will improve. The best way to improve is to be open to criticism and respond to it with no defensiveness. Future criticism is unpredictable, but one can seek weak spots that invite criticism. It is not easy to view Popper’s institutionalism as minimal; it should be minimal in different ways, relative to diverse ends, theoretical and practical, just as critical rationalism is minimalist and as the minimum is relative to ends. Popper’s third world (...) is a meta-institution of sorts, and efforts to apply it to diverse problems are welcome in a minimal manner. Finally, Popper declared optimism obligatory; this is open to interpretation the way Jarvie viewed utopianism as useful for diverse ends, thus criticizing Popper’s anti-utopianism. (shrink)

The aim of this paper is to consider whether critical rationalism has any ideas which could usefully be applied to the internet. Today we tend to take the internet for granted and it is easy to forget that it was only about two decades ago that it began to be used to any significant extent. Accordingly in section 1 of the paper, there is a brief consideration of the history of the internet. At first sight this makes it (...) looks implausible that any of Popper’s ideas could be applicable to the internet, since Popper died before the internet came into general use. However, section 2 argues that Popper’s theory of World 3 does apply very well to the internet. This application is significant because, as shown in section 3, it leads to the problem of misinformation, which is one of the most significant problems generated by the internet. In section 4 there is an attempt to solve this problem using ideas taken from Popper’s epistemology. It is argued that there should be changes in education designed to prepare students for the internet age. Teaching in the internet age should focus on presenting to the students not just the accepted theories but also the evidence on which they are based. An illustration of how this might be done is given by considering an example from science teaching, namely the teaching of Newtonian mechanics in the last years of school or first years of university. (shrink)

The extent of harm and suffering caused by the coronavirus pandemic has prompted a debate about whether the epidemic could have been contained, had the gravity of the crisis been predicted earlier. In this paper, the philosophical debate on predictive reasoning is framed by Hume’s problem of induction. Hume argued that it is rationally unjustified to move from the finite observations of past incidences to the predictions of future events. Philosophy has offered two major responses to the problem of induction: (...) the pragmatic induction of Peirce and the critical rationalism of Popper. It is argued that of these two, Popper’s critical rationalism provides a more potent tool for preparing for unanticipated events such as the Covid-19 pandemic. Popper’s notion of risky predictions equips strategic foresight with clear hypotheticals regarding potential crisis scenarios. Peirce’s pragmatic induction, instead, leans on probabilities that are slower to be amended as unexpected events start unfolding. The difference between the two approaches is demonstrated through a case study of the patterns of reasoning within the World Health Organization in the early stages of the coronavirus pandemic. (shrink)

In this paper, I try to show how the ambition of William Bartley, the founder of comprehensively critical rationalism, can be realized, i.e. how critical rationalism can be comprehensive. I argue that the alleged paradox of comprehensively critical rationalism, formulated, among others, by Bartley himself, depends on a faulty understanding of criticizability. I therefore propose a new understanding of criticizability, and argue that under the new understanding there is no paradox of comprehensively critical (...) rationalism. Finally, I try to explain how critical rationalism can be comprehensive, i.e. without any concession to irrationalism, or to any dogmatic faith, including the faith in reason. (shrink)

The author characterizes the model of rationality devised by critical rationalism in opposition to the classic model of rationality and as an alternative to this. He illustrates and criticizes the trichotomous theory of knowledge which, going back to Max Scheler, is received in a secularized version by Habermas and Apel, also under the influence of the hermeneutic tradition of Heidegger and Gadamer and of the so-called “critical theory” of Max Horkheimer and Theodor Adorno. The author criticizes historicism (...) as it expects to be an alternative to naturalism and not to make use of the method based on scientific laws. The author proposes as an example of technological social science the model developed in economics starting from Adam Smith. With regard to legal theories, natural law is rejected because of its sociomorphic cosmology. It is proposed that legal science as social technology has two parts. One part aims at efficient interpretations of valid law (for the space-time region concerned) and a second part aims at the construction of efficient norms for the modification of valid law by legislation. (shrink)

This paper considers critical rationalism under an institutional perspective. It argues that a methodology must be incentive compatible in order to prevail in scientific competition. As shown by a formal game-theoretic model of scientific competition, incentive compatibility requires quality standards that are hereditary: using high-quality research as an input must increase a researcher’s chances to produce high-quality output. Critical rationalism is incentive compatible because of the way it deals with the Duhem-Quine problem. An example from experimental (...) economics illustrates the relevance of the arguments. (shrink)

Popper's critical rationalism is widely accepted under scientists and philosophers of science as a proper method for the reconstruction of scientific theories. On occasion of the application of the Popperian ideas for the reconstruction of chemistry by Akeroyd the flaws of the critical rationalist approach are criticised and a methodical alternative is proposed, involving the operational definition of scientific terms.

Despite the moral underpinnings of Karl Popper’s philosophy, he has not presented a well-established moral theory for critical rationalism (CR). This paper addresses the ontological status of _moral agents_ as part of a research program for developing a moral theory for CR. It argues that moral agents are _selves_ who have achieved the cognitive capacity of _personhood_ through an evolutionary scenario and interaction with the environment. This proposal draws on Popper’s theory of the self and his theory of (...) three worlds, which offer both epistemological and ontological insights into the emergence and evolution of _moral agents_. The paper also discusses some of the consequences of this proposal for the _objectivity_ and _criticizability_ of moral judgments and the moral agency of artificial intelligence. It concludes by suggesting some directions for future research on the epistemological and ontological problems of ethics in CR. (shrink)

Foreword I. Critical rationalism is a genuinely new philosophical perspective. It is not, however, one systematic view. The development of it by Popper and ...

“Science does not rest on a rockbed. Its towering edifice, an amazingly bold structure of theories, rises over a swamp,” wrote Karl Popper in the fall of 1932. “The foundations are piers going down into the swamp from above. They do not reach a natural base, but ... one resolves to be satisfied with their firmness, hoping they will carry the structure. ... The objectivity of science can be bought only at the cost of relativity.1 The tower over the swamp (...) represented the end of foundationist philosophy. Objectivity no longer rested on a rockbed but on the turns of scientific experimentation and criticism, as much a matter of vagary and luck as of talent and method. Surely, historians should have written Popper into the hall of fame of nonfoundationist philosophers. They did not. In fact, recent scholarship on the Vienna Circle, especially on Otto Neurath, represents Popper as the foundationist philosopher par-excellence. Some of his followers seem to miss his nonfoundationism, too. A House Built on Sand is the title Popperian philosopher Noretta Koertge chose for a spirited collection of essays that takes aim at the follies of science studies.2 Alas, Popper describes science itself as built on sand . But, then, why should historians and philosophers care about misreadings of Popper? Because they create a distorted picture of interwar Viennese philosophy that obscures, rather than reveals its contemporary relevance. This essay, focusing on the Neurath-Popper debate, attempts to redraw the picture and set the record straight. (shrink)

In this paper, I address the issue of the possible applicability of the ideas of Karl R. Popper’s social and political philosophy in the contemporary political life of postcolonial countries. Through reference to the reception of Popper’s philosophy in Central and Eastern Europe, I argue that Popper’s writings were effective in catalysing the political wholesale transformation by undermining Marxists’ pretensions to scientific status rather than through his anti-utopian and anti-revolutionary political recommendations. In the context of attempts to apply Popper’s ideas (...) in postcolonial countries, especially Sub-Saharan Africa, I claim that the influence of Popper’s social thought on the politics of those countries may not be as effective as expected or desired. (shrink)

We all know that ships are safest in the harbor; but alas, that is not what ships are built for. They are destined to leave the harbor and to confront the challenges that are waiting beyond the harbor mole. A similar challenge confronts the practice of research. Research at work cannot play it safe and stay in whatever theoretical and methodological harbors in which it may have found shelter in the past. Still less can it examine and maintain its foundations (...) in the dry dock. Research is more like a ship that must be repaired on the open sea. Yet foundationalist ideas persist in the practice of research. Counter to what is often assumed, today’s dominating model for research--the fallibilist model of critical rationalism--has not really overcome the empirical foundationalism of earlier, positivist research practices. This paper analyses two major foundationalist traps that are currently in the upswing and work against reflective research practice. (shrink)

Critical rationalists cannot reconcile their falibilism with the demand of logic for universality. Popper tried, but failed, to achieve universality in logic without proof. Attempts to find a limited approach to logic as ‘logics of’ have failed to find a coherent critical rationalist alternative. Critical rationalists take Tarski’s logic to be the best of logic today. But Tarski renders logic as close to justification, and thereby universality, as possible. A fallibilist version of Tarskian logic can yield a (...) critical rationalist alternative: It provides rules for solving problems in linguistic contexts, but also discovers mistakes by discovering errors in logical inference. (shrink)

This paper constitutes one extended argument, which touches on various topics of Critical Rationalism as it was initiated by Karl Popper and further developed in his aftermath. The result of the argument will be that critical rationalism either offers no solution to the problem of induction at all, or that it amounts, in the last resort, to a kind of Critical Rationalist Inductivism as it were, a version of what I call Good Old Induction. One (...) may think of David Miller as a contemporary representative of what I consider as the ‘no solution’ version of critical rationalism, while Alan Musgrave stands for the version of ‘critical rationalist induction’. Popper’s own writings admit of either interpretation. (shrink)

David Miller is the foremost exponent of the purist critical rationalist doctrine and here presents his mature views, discussing the role that logic and argument play in the growth of knowledge, criticizing the common understanding of argument as an instrument of justification, persuasion or discovery and instead advocating the critical rationalist view that only criticism matters. Miller patiently and thoroughly undoes the damage done by those writers who attack critical rationalism by invoking the sterile mythology of (...) induction and justification that it seeks to sweep away. In addition his new material on the debate on verisimilitude is essential reading for all working in this field. (shrink)

Matter, in Aristotle’s Metaphysics, plays a prototypical version of a rôle that recurs, refracted through the domestic preoccupations of each age, in metaphysical analyses of the constitution of the real. After identifying the rôle, I shall trace a developmental arc of philosophical treatment from Aristotle through the Cartesian period to Kant. The mature Kantian view of the rôle—the ‘critical’ view—is, I maintain, a reversion to the Aristotelian position. It is not however a simple reversion. It is reversion mediated through (...) the Cartesian view. Arguably, the mediation is more than merely historical. Arguably, the Kantian treatment is conceptually or theoretically indebted to the Cartesian. This ‘dialectical’ indebtedness, if it can be established, has important, and as I see them negative, implications for the integrity of the Kantian stand. (shrink)

Artifacts are ubiquitous and influential in our world, but their nature and existence are controversial. Several theories have been proposed to explain the ontology of artifacts. Drawing on Popper's theory of three worlds, this paper suggests a metaphysics for artifacts along the line of a critical rationalist (CR) approach. This theory distinguishes between three realms of reality: the physical world (World 1), the mental world (World 2), and the world of objective knowledge (World 3). The paper argues that artifacts (...) have different ontological components that correspond to these three realms, and that each component is real and causal. The paper shows how this perspective can account for the intentional and functional aspects of artifacts, as well as their dependence on plans that influence different realms of reality. The paper explains how this pluralistic ontology, compared to the rival theories, enables one to explain the relevant ontological problems of artifacts. The paper also explores how this proposal can lead to a research program encompassing a broader range of technologies, such as social artifacts. In sum, the paper suggests that Popper's three worlds theory provides a rich and comprehensive framework for understanding the metaphysics of artifacts. (shrink)