Analytic debates about truth are wide-ranging, but certain key themes tend to crop up time and again. The three themes that we will examine in this paper are (i) the nature and behaviour of the ordinary concept of truth, (ii) the meaning of discourse about truth, and (iii) the nature of the property truth. We will start by offering a brief overview of the debates centring on these themes. We will then argue that cross-linguistic experimental philosophy has an indispensable yet (...) underappreciated role to play in all of these debates. Recognising the indispensability of cross-linguistic experimental philosophy should compel philosophers to significantly revise the ways in which they inquire about truth. It should also prompt analytic philosophers more generally to consider whether similar revisions might be necessary elsewhere in the field. (shrink)

This anthology focuses on “practical” forms and expressions of knowledge, like thinking through artistic media or by crafting things out of materials. The ten chapters follow and review various tracks in conceptions of contemporary knowledge, exploring human knowledge and experience from the perspective of human activities or practices, professional, artistic, domestic, or whatever. A guiding idea is that human knowledge seldom, perhaps never, fits into the traditional dualism between thinking and doing. -/- The chapters are written by philosophers and musicians (...) – some with a double experience as artists and theoreticians. The themes are philosophical, but above all, they touch on questions that are essential for how we understand ourselves as thinking and playing bodies, indeed as parts of nature. The book does not propose one single “theory of knowledge” but steps towards a more diverse and open attitude to the meaning of knowledge. -/- We hope that the texts will be of interest and useful in both disciplinebased and professional education: in philosophy, art schools, tea cher education, and in other programmes where tacit and practical knowledge are essential for the (future) practitioners. It is possible to independently read, and profit from, most of the chapters. (shrink)

Was macht das Besondere der menschlichen Lebensform aus? Wie können wir es verstehen, dass unsere Art wie alle anderen natürlich evolviert ist und dennoch als einzige Art die Fähigkeit entwickelt hat, unter dem Anspruch der Freiheit und in reflexiver Distanz zu handeln, damit aber die Umwelt auf eine Welt hin zu transzendieren? Jung argumentiert, dass sich diese Fragen nur beantworten lassen, wenn man philosophische, evolutionstheoretische und kognitionswissenschaftliche Ansätze aufeinander bezieht. Der Schlüssel hierfür ist der Begriff der Bedeutung. Alle Lebewesen erfassen (...) ihre Umwelt im praktischen Umgang mit ihr als bedeutsam. Auch der Geist des Menschen ist essentiell verkörpert und basiert auf erlebten Bedeutsamkeiten. Die Fähigkeit zur symbolischen Artikulation und kulturellen Weiterentwicklung solcher Lebensbedeutungen erlaubt es ihm aber auch, die lokale Umwelt zu transzendieren und dabei Werte, Normen und objektive Geltungsansprüche zu entwickeln. Eine zeitgemäße Anthropologie muss in der Lage sein, diese qualitativen Besonderheiten des menschlichen Geistes als Resultate von Naturprozessen verständlich zu machen. Sie verbindet methodischen Naturalismus mit Offenheit für die Transzendenz des Geistes über die Umwelt. Damit leistet der Autor einen wichtigen Beitrag zu einem nichtreduktionistischen Verständnis des Menschen, das Leib und Geist nicht dualistisch trennt, sondern ihre spannungsvolle Einheit sichtbar macht. (shrink)

We owe most scientific knowledge to methods of inquiry that are never formally analyzed. The analysis of behavior does not call for hypothetico-deductive methods. Statistics, taught in lieu of scientific method, is incompatible with major features of much laboratory research. Squeezing significance out of ambiguous data discourages the more promising step of scrapping the experiment and starting again. As a consequence, psychologists have taken flight from the laboratory. They have fled to Real People and the human interest of “real life,” (...) to Mathematical Models and the elegance of symbolic treatments, to the Inner Man and the explanatory preoccupation with inferred internal mechanisms, and to Laymanship and its appeal to “common sense.” An experimental analysis provides an alternative to these divertissements.The “theories” to which objection is raised here are not the basic assumptions essential to any scientific activity or statements that are not yet facts, but rather explanations which appeal to events taking place somewhere else, at some other level of observation, described in different terms, and measured, if at all, in different dimensions. Three types of learning theories satisfy this definition: physiological theories attempting to reduce behavior to events in the nervous system; mentalistic theories appealing to inferred inner events; and theories of the Conceptual Nervous System offered as explanatory models of behavior. It would be foolhardy to deny the achievements of such theories in the history of science. The question of whether they are necessary, however, has other implications.Experimental material in three areas illustrates the function of theory more concretely. Alternatives to behavior ratios, excitatory potentials, and so on demonstrate the utility of rate or probability of response as the basic datum in learning. Functional relations between behavior and environmental variables provide an account of why learning occurs. Activities such as preferring, choosing, discriminating, and matching can be dealt with solely in terms of behavior, without referring to processes in another dimensional system. The experiments are not offered as demonstrating that theories are not necessary but to suggest an alternative. Theory is possible in another sense. Beyond the collection of uniform relationships lies the need for a formal representation of the data reduced to a minimal number of terms. A theoretical construction may yield greater generality than any assemblage of facts; such a construction will not refer to another dimensional system. (shrink)

Organisms actively compete for environmental resources. They assess their surroundings, estimate how much energy they need for particular goals, and then realize the optimum variant. They take measures to control certain environmental resources. They perceive themselves and can distinguish between “self” and “non-self.” Current empirical data on all domains of life indicate that unicellular organisms such as bacteria, archaea, giant viruses, and protozoa as well as multicellular organisms such as animals, fungi, and plants coordinate and organize their essential life functions (...) through signaling processes. Signaling allows for real life coordination and organization and is a communicative action in which speciesspecific behavioral patterns and sign repertoires are used. Cells, tissues, organs, and organisms that communicate share several key levels that are essential to all life forms and which serve as a uniform tool for investigating biocommunication. (shrink)

Scattered skeptical remarks and a general austerity that infused his writings have given Justice Oliver Wendell Holmes a reputation as some type of nihilist. Noted commentators such as Richard Posner and Albert Alschuler have claimed as much. This article seeks to correct this misunderstanding. Holmes was not a nihilist in the sense of being melancholy due to a belief that the world has no absolute moral values or gods. Instead, Holmes was a pragmatist in the spirit of William James and (...) John Dewey. While Holmes had doubts about moral truth and deities, he ultimately thought that their existence (or non-existence) should have no bearing on our behavior or the law. We must, through our collective efforts, find values that work for us. (shrink)

What is the source of logical and mathematical truth? This book revitalizes conventionalism as an answer to this question. Conventionalism takes logical and mathematical truth to have their source in linguistic conventions. This was an extremely popular view in the early 20th century, but it was never worked out in detail and is now almost universally rejected in mainstream philosophical circles. Shadows of Syntax is the first book-length treatment and defense of a combined conventionalist theory of logic and mathematics. It (...) argues that our conventions, in the form of syntactic rules of language use, are perfectly suited to explain the truth, necessity, and a priority of logical and mathematical claims, as well as our logical and mathematical knowledge. (shrink)

Free, open access book from Oxford University Press at link below. Democracy is struggling in America. Citizens increasingly feel cynical about our system and doubt they can influence public policy. Distrustful of other Americans and elected officials, some are even turning to authoritarian alternatives. Hyperpartisanship and recent contentious presidential elections have deepened political despair. While some citizens get swept up in optimism during campaign cycles, they often later find themselves frustrated with elected leaders as they wait for change. This book (...) seeks to revive democracy by teaching citizens how to hope. Hope animates life in a democracy, moving citizens forward through new challenges, new ideas, and new experiments. The form of hope described in this book is more than just a campaign slogan or a self-help program, it is an informed call to citizen engagement that opens new possibilities for our country. Drawing on examples from life in America today and pragmatist philosophy, this book explains how schools can cultivate hope through our habits and how action in our communities can sustain hope. It shows how we can build trust, grow political agency, and shape an improved American identity through hoping together. This book provides guidance for learning how to hope in schools, universities, and civil society. It describes what hope is, why it matters to democracy, and how to teach it. (shrink)

This volume reflects the development and theoretical foundation of a new paradigm for critical thinking based on inquiry. The field of critical thinking, as manifested in the Informal Logic movement, developed primarily as a response to the inadequacies of formalism to represent actual argumentative practice and to provide useful argumentative skills to students. Because of this, the primary focus of the field has been on informal arguments rather than formal reasoning. Yet the formalist history of the field is still evident (...) in its emphasis, with respect to both theory and pedagogy, on the structure and evaluation of individual, de-contextualized arguments. It is our view that such a view of critical thinking is excessively narrow and limited, failing to provide an understanding of argumentation as largely a matter of comparative evaluation of a variety of contending positions and arguments with the goal of reaching a reasoned judgment on an issue. As a consequence, traditional critical thinking instruction is problematic in failing to provide the reasoning skills that students need in order to accomplish this goal. Instead, the goal of critical thinking instruction has been seen largely as a defensive one: of learning to not fall prey to invalid, inadequate, or fallacious arguments. (shrink)

La tesis central de este trabajo es que la tradicional tensión entre substancia y procedimiento socava las estabilidad de la justificación de la concepción liberal más extendida de la legitimidad (la Democracia Deliberativa). Dicha concepciones enfrentan problemas serios a la hora de articular de manera consistente dos dimensiones que parecen ir naturalmente asociadas a la idea de legitimidad: la dimensión procedimental, vinculada a la equidad del procedimiento, y la dimensión epistémica, asociada a la corrección de los resultados. En este trabajo (...) sostengo que a) esa tensión surge de la adopción de una concepción epistemológica social de tipo "veritativo-consecuencialista; b) es posible manejar dicha tensión mediante el remplazo de la epistemología subyacente por una concepción epistemológica social de tipo procedimentalista de orientación pragmatista y c) dicha operación orienta el diseño institucional en una dirección experimentalista. (shrink)

We identify two senses of ‘pragmatics’ and related terms that give rise to two different methods of propositional individuation. The first one is the contextualist approach that essentially acknowledges contextual information to take part in the determination of what is said by the utterance of a sentence. In this sense, Pragmatics relies on the Principle of Compositionality and interprets propositions as structured entities. It epitomises the Building-block Model of Propositional Individuation. The general approach that makes what the agents do the (...) grounding level of philosophical and linguistic analysis characterizes the second sense, Pragmatism. It finds its clearest expression in Peirce’s Pragmatist Maxim, and it relies on the Fregean Principle of Context, and supports a view of propositions as unstructured entities. This is the Organic Model of Propositional Individuation. There is a test, the Analytic Equivalence Test, that tells apart the two models. According to it, the answer to the question whether a theory makes room for different but analytically equivalent propositions determines the model the theory belongs in. A positive answer classifies the theory as belonging to the building-block model; a negative answer allocates the theory within the organic model. (shrink)

Paul Gewirtz has suggested that contemporary Chinese society lacks a shared framework. A Rortian might describe this by saying that China lacks a “final vocabulary” of “thick terms” with which to resolve ethical disagreements. I briefly examine the strengths and weaknesses of Confucianism and Legalism as potential sources of such a final vocabulary, but most of this essay focuses on Zhuangzian Daoism. Zhuangzi 莊子 provides many stories and metaphors that can inspire advocates of political pluralism. However, I suggest that Zhuangzi (...) is ultimately an “ironist” in Rorty’s sense. Many intellectuals assume there is something progressive and liberating about broadly ironic stances like relativism and skepticism. Ethically, though, irony is “the night in which all cows are black”: since it regards all positions as equally undermined, an ironic stance cannot be enlisted in support of tolerance or humanitarianism or in opposition to absolutism or cruelty. (shrink)

This paper discusses the most persistent controversial issue that occurred in Western educational philosophy ever since Socrates questioned the Sophists: the role of truth in teaching. Ways of teaching these kinds of controversy issues are briefly considered to isolate their epistemic characteristics, which will enable the interpretation of Plato and Dewey as exemplars of rationalism and empiricism regarding the role of knowledge in the curriculum and thus include their partial truths in the epistemic ethos of teaching. The consideration of pedagogy (...) will then include the partial truths of rationalism and empiricism in the epistemic ethos of teaching by following Kant's ‘Concepts without percepts are empty; perceptions without conceptions are blind’.This claim, however, is narrowed down in two ways compatible with postmodernism and the heavy emphasis on constructionism in faculties of education. After quoting Harry Broudy's statement that the educational epistemic ethos should be domain‐specific, guided by the experts’ inquiry protocols in each curricular area, it is narrowed down further with Maxine Greene's explication that it should be pluralistic and lesson‐specific. This epistemic ethos is not argued as a synthesis but as an aggregate of the partial truths of various epistemologies in the spirit of the postmodern doubt in any one theory of knowledge without throwing out the baby with the dirty bath water.Finally, the streams of consciousness involved in teaching and learning good knowledge are described phenomenologically to disclose how truth can be disclosed in teaching, thereby grounding propositional knowledge, for example, ontologically in the being of the student and in the being of the world. (shrink)

Characteristic of neo-pragmatism is a commitment to deflationism about semantic properties, and inferentialism about conceptual content. It is usually thought that deflationism undermines the distinction between realistic discourses and others, and that the neo-pragmatists, unlike the classical pragmatists, cannot recognize that truth is a norm of belief and inquiry. I argue, however, that the distinction between realistic discourses and others can be maintained even in the face of a commitment to deflationism, and that deflationists can recognize that truth is a (...) norm of belief and inquiry. If deflationism is true, realistic discourses, it turns out, are those that are inferentially integrated with a large body of other commitments, whereas those that call for an anti-realist treatment are inferentially isolated. Now, Grimm has persuasively argued that inquiry aims at achieving understanding, and that to understand something is, roughly, to grasp a large body of inferential connections in which it features. So, if he is right, realistic discourses are those in which the aim of inquiry can be achieved. This fact, together with an inferential theory of conceptual content, will, I argue, allow neo-pragmatists to recognize truth as a norm of belief and inquiry, despite their commitment to deflationism. (shrink)

Rawls ‘s political liberalism abandons the traditional political‐theory objective of providing a philosophical account of liberal democracy. However, Rawls also aims for a liberal political order endorsed by citizens on grounds deeper than what he calls a “modus vivendi” compromise; he contends that a liberal political order based upon a modus vivendi is unstable. The aspiration for a pluralist and “freestanding” liberalism is at odds with the goal of a liberalism endorsed as something deeper than a modus vivendi compromise among (...) competing comprehensive doctrines. A liberalism that is supported “for its own sake” rather than as a compromise must necessarily be based on some conception of the good, of the sort that political liberalism eschews. (shrink)

Given the role consensus is supposed to play in the social aspects of inquiry and deliberation, it is important that we may always identify a consensus as the basis of joint inquiry and deliberation. However, it turns out that if we think of an agent revising her beliefs to reach a consensus, then, on the received view of belief revision, AGM belief revision theory, certain simple and compelling consensus positions are not always available.

Truth matters for organization studies, but it has been neglected as a topic of research. Positivist scholars do not tend to question assumptions about the relationship between knowledge and the world, while critical theorists tend to view ‘truth’ as an outdated, metaphysical way to describe it. However, the pragmatic philosophical tradition of inquiry into truth has not yet received enough attention within organization studies. This essay presents a genealogical account of that tradition by conducting a close reading of texts by (...) C.S. Pierce, William James, Hilary Putnam and Richard Rorty. Following this reading, we identify pragmatic truths that pertain to the qualitative v. quantitative, rigor v. relevance, and positivist v. critical tensions that currently animate our field. (shrink)

This paper attempts to square libertarian principles with the reality of formal education by asking how far we should and can allow people to do as they wish in educational settings. The major focus is on children in schools, as the concept ‘childhood’ ipso facto implies restrictions on doing as one wishes, and schools as institutions entail inevitable constraints. Children by definition tend to enjoy stronger protection rights but weaker liberty rights than adults. A local preferential calculus is developed as (...) a guide for teachers, suggesting wishes should be granted where feasible and at least welfare neutral. In the case of teachers, employers set the parameters for the feasibility criterion but should also ensure at least welfare neutrality, while students in adult and higher education should be responsible for the feasibility and welfare outcomes of their own choices. (shrink)

In the 1920s, John Dewey's followers in China, led by his student Hu Shih, attempted to put his pragmatism into practice in their quest for democracy. This essay compares Hu Shih's thought, especially his emphasis on pragmatism as method, with Dewey's philosophical positions and evaluates Hu's achievement as a pragmatist in the context of the tumultuous times he lived in. It assesses Hu's claim that the means to democracy lies in education rather than politics, since democracy as a way of (...) life requires a cultural renewal beyond institutional changes. It argues that a problem‐centered approach to social change does not preclude radical action, even revolution. But pragmatism is against gratuitous use of violence in the service of wholesale and abstract ideals advocated by various “isms.” While Hu's experiment of democracy in China is a significant episode in the history of pragmatism, its “failure” does not prove that there are inherent flaws in the pragmatist method, that pragmatism is unviable for China. The failure needs to be understood in the context of the pragmatist conception of experiment, in which failures are to be expected; what is important is to learn from them to achieve better results in the next stage of inquiry. Hu Shih's pragmatism contains lessons for pragmatists and for those interested in the continued quest for democracy in China—the experiment continues. (shrink)

In this paper, I examine the view that, surprisingly, the more citizens deliberate about politics, the less likely they are to participate in the realm of the political, and vice versa. In the first part of the paper, I approach the problem from the perspective of the paradox of voting, the claim that voting itself is instrumentally irrational because of the very low probability that a single vote will make any difference at the elections. In the second part of the (...) paper, I argue that rather than analyzing voting instrumentally, it is better to view it as part of the civic commitments that constitute what it means to be a citizen in a democratic society. The act of voting is not primarily an individual?s attempt to decisively influence any particular outcome, but an affirmation of the key practice that upholds the democratic society in which citizens play a part. This reveals a meta-paradox of voting. Namely, to not vote is to exhibit a type of behavior that implies acceptance of democracy simultaneously with rejecting its defining component. Because of that, I will claim, not voting is itself irrational. In light of that conclusion, in the third part of the paper, I explore the extant divide between deliberation and participation by referring back to the analysis of civic commitments. Whereas participation without deliberating reveals ideological bias, deliberation without participation expresses a lack of understanding of what it means to be a citizen. The way to connect them is to engage in a process of attaining reflective equilibrium between the two, starting from the practice of deliberation that would be fully informed by the awareness of our democratic commitments and disconnected from ideologically motivated participation. (shrink)

The paper seeks to answer two new questions about truth and scientific change: What lessons does the phenomenon of scientific change teach us about the nature of truth? What light do recent developments in the theory of truth, incorporating these lessons, throw on problems arising from the prevalence of scientific change, specifically, the problem of pessimistic meta-induction?

Design research has been positioned as an important methodological contribution of the learning sciences. Despite the publication of a handbook on the subject, the practice of design research in education remains an eclectic collection of specific approaches implemented by different researchers and research groups. In this paper, I examine the learning sciences as a design science to identify its fundamental goals, methods, affiliations, and assumptions. I argue that inherent tensions arise when attempting to practice design research as an analytic science. (...) Drawing inspiration and insight from Chinese philosophy and the practice of Chinese medicine, I propose that the learning sciences may better attain its claims to science through greater reliance on inductive synthesis rather than linear causal analysis. In so doing, I reposition the endeavor of science making within the metaphysics of process philosophy instead of classical Western philosophy. I suggest that theory building will be strengthened empirically and pragmatically by more careful observation and systematic generalization of the stability patterns of design related phenomena. It also needs to be more situated in its orientation. (shrink)

Take the following version of scientific realism: we have good reason to believe that (some of the) current scientific theories tell us something specific about the underlying, i.e. unobservable, structures of the world, for instance that there are electrons with a certain electric charge, or that there are viruses that cause certain diseases. Popper, the rationalist, would not have adhered to the proposed formulation of scientific realism in terms of the rationality of existential beliefs concerning unobservables. Popper did not believe (...) in belief. According to Van Fraassen, the empiricist, one may yet have a rational existential belief concerning unobservables, given a liberal notion of rationality of belief. In this paper I will investigate to what extent a reassessment of both Popper’s rejection of the rationality of belief and Van Fraassen’s reformulation of the rationality of belief, points towards a new and pragmatist dissolution of the ‘problem of scientific realism’. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Beastly Vagueness in Charles Sanders Peirce and Henry JamesMegan M. QuigleyIn 1878, Charles Sanders Peirce closed the first section of "How to Make our Ideas Clear"—an article that William James later declared a "birth certificate of Pragmatism"—on a strangely anecdotal note.1 Using what would become known as the pragmatic method to demolish the notion of Grand Ideas ("Our idea of anything is our idea of its sensible effects"), Peirce (...) also included a lesson from an "old German story":Many a man has cherished for years some vague shadow of an idea, too meaningless to be positively false; he has nevertheless, passionately loved it, has made it his companion by day and by night, and has given to it his strength and his life, leaving all other occupations for its sake, and in short has lived with it and for it, until it has become, as it were, flesh of his flesh and bone of his bone; and then he has waked up some morning to find it gone, cleaned vanished away like the beautiful Melusina of the fable, and the essence of his life gone with it. I have myself known such a man.(WCSP, p. 261)The story of the fled Melusina (a half-woman, half-serpent who gives birth to monsters) acts ostensibly as a warning against the danger inherent in "vague" ideas. "A vague shadow of an idea" can sap the life-blood out of a young man and, therefore, Peirce asserted, we must strive to be clear. But Peirce's anecdote did more than further his argument; it was an autobiographical aside—so personal, in fact, that he ordered the passage to be deleted in all future printings of his essay.Melusina was not just an allusion to a mythological figure; it was also a reference to the middle name of his wife, Harriet Melusina Fay. Since his schooldays, Peirce's friend and, later, wife, whom he called [End Page 362] "Zina," had been his constant companion and even the scribe for his fervent aspirations. Under the title "Theories of C. S. Peirce, 1854" she had transcribed his ambitious declaration: "My life is built upon a theory: and if this theory turns out false, my life will turn out a failure" (Brent, p. 51). By the mid 1870s, Peirce's theory, "passionately loved... his companion by day and by night," was finally being elucidated in his articles; however, Melusina herself had "cleaned vanished away," after two decades of intimacy, leaving Peirce in Paris to what his friend Henry James described as "a very lonely and dreary existence." Peirce's inclusion of an anecdote about his own loneliness—"I have myself known such a man"—is poignant even as it reveals his anger. Melusina is both a monster and "beautiful," and with her disappearance, Peirce has lost, "the essence of his life." The personal allusion also highlights the anxiety in the young Peirce's writing. What if his theories came to nothing, remained merely vague, and he lost his whole life and his wife to a misguided dedication? And how ironic would that be given that the idea itself aimed to explode the fallacy of grand ideas? Such an irony was not lost on his main companion during the winter of 1875, Henry James.In the following pages I aim to demonstrate that Charles S. Peirce's anxiety acted as a germ for the beast of John Marcher in James's late story, "The Beast in the Jungle." "More than any of Henry James's tales," Paul Lindholdt writes, "'The Beast in the Jungle,' has prompted source studies and psychoanalytic discussions by critics striving to identify" John Marcher.2 Eager to diagnose the relationship between Marcher and May Bartram, critics have sought both autobiographical and literary sources for Marcher's character.3 Strangely, however, no one has noted the connection between Peirce and Marcher, an omission that is especially odd given the critical attention directed at the relationship between the story and pragmatism. Since Richard Hocks's Henry James and Pragmatistic Thought highlighted the pragmatic tendencies of James's story and called Marcher the "anti-pragmatist" hero, "an epitome of William's... (shrink)

The similarity approach stands as a significant attempt to defend scientific realism from the attack of the pessimistic meta-induction. The strategy behind the similarity approach is to shift from an absolute notion of truth to the more flexible one of truthlikeness. Nonetheless, some authors are not satisfied with this attempt to defend realism and find that the notion of truthlikeness is not fully convincing. The aim of this paper is to analyze and understand the reasons of this dissatisfaction. Our thesis (...) is that the dissatisfaction with the notion of truthlikeness concerns the double role that this notion plays within the similarity approach: This notion plays both a regulative role in the conception of theories and a constitutive one in their selection. (shrink)

Liberalism sanctions both democracy and capitalism, but incorporating the two into a coherent intellectual system presents difficulties. The anti-foundational pragmatism of Richard Rorty offers a way to describe and defend a meaningful democratic capitalism while avoiding the problems that come from the more traditional liberal justification. Additionally, Rorty's rejection of the search for extra-human grounding of social and political arrangements suggests that democracy is entitled to a philosophical support that capitalism is not. A viable democratic capitalism therefore justifies its use (...) of markets on the consent of the governed, rather than appeals to liberal notions of individualism, liberty, and property. (shrink)

For two ideally rational agents, does learning a finite amount of shared evidence necessitate agreement? No. But does it at least guard against belief polarization, the case in which their opinions get further apart? No. OK, but are rational agents guaranteed to avoid polarization if they have access to an infinite, increasing stream of shared evidence? No.