Schipper makes the essential ideas of great thinkers accessible to the student in this well-organized book. In order to stress the interactive nature of the teaching-learning process, Introduction to Philosophy and Applied Psychology is structured in workshops that focus primarily on philosophy with some attention given to related topics in psychology and counseling.

Shows that many of our understandings about scientific thought can be corrected once we realise just how unnatural science is. Quoting scientists from Aristotle to Einstein, the book argues that scientific ideas are, with rare exceptions, counter-intuitive and contrary to common sense.

This paper explores Kant’s account of propositional content and its implications for the relationship between his notions of knowledge (Wissen) and cognition (Erkenntnis). While previous commentators commonly read Kant as holding a Fregean theory of propositional content, in this paper I argue that Kant’s theory of propositional content aligns more closely with Peter Hanks’ recent account. According to my reading, Kant holds that individual acts of judging are both ontologically and explanatorily prior to propositions or Kantian judgments (Urteil). Furthermore, on (...) my reading, acts of judging for Kant are acts of assertively predicating a property of an object rather than merely acts of neutral predication. This reading challenges the lately popular view that Kant’s notions of knowledge and cognition are not only distinct but also disjunct. I instead suggest that we should regard Kantian knowledge that requires cognitions as its grounds as a species of Kantian cognitions. (shrink)

During the last thirty years both the social sciences and humanities in many countries have experienced a huge increase in student numbers, often directly related to national policies aimed at enlarging access to higher education for the majority of a generation. Although this evolution seems globally positive, it has also caused some specific problems within those disciplines, such as anthropology, which until recently led only to academic careers. In most European countries anthropological teaching has been predominantly research-oriented, that is rather (...) than ‘knowledge-oriented’ like disciplines taught in secondary education. In this paper, after having recalled some aspects of the teaching of anthropology since the 1950s, I would like to propose certain arguments for a discussion about the aims and means of teaching social sciences in general and anthropology in particular in the coming decades. Given the actual ‘dis-ease’ about this topic, this debate seems to becoming more and more inevitable. (shrink)

Social scientists increasingly use social media data to illuminate long-standing substantive questions in social science research. However, a key challenge of analyzing such data is their lower level of individual detail compared to highly detailed survey data. This limits the scope of substantive questions that can be addressed with these data. In this study, we provide a method to upgrade individual detail in terms of ethnicity in data gathered from social media via the use of register data. Our research aim (...) is twofold: first, we predict the most likely value of ethnicity, given one's first name, and second, we show how one can test hypotheses with the predicted values for ethnicity as an independent variable while simultaneously accounting for the uncertainty in these predictions. We apply our method to social network data collected from Facebook. We illustrate our approach and provide an example of hypothesis testing using our procedure, i.e., estimating the relation between predicted network ethnic homogeneity on Facebook and trust in institutions. In a comparison of our method with two other methods, we find that our method provides the most conservative tests of hypotheses. We discuss the promise of our approach and pinpoint future research directions. (shrink)

The debate on probabilistic measures of coherence flourishes for about 15 years now. Initiated by papers that have been published around the turn of the millennium, many different proposals have since then been put forward. This contribution is partly devoted to a reassessment of extant coherence measures. Focusing on a small number of reasonable adequacy constraints I show that (i) there can be no coherence measure that satisfies all constraints, and that (ii) subsets of these adequacy constraints motivate two different (...) classes of coherence measures. These classes do not coincide with the common distinction between coherence as mutual support and coherence as relative set-theoretic overlap. Finally, I put forward arguments to the effect that for each such class of coherence measures there is an outstanding measure that outperforms all other extant proposals. One of these measures has recently been put forward in the literature, while the other one is based on a novel probabilistic measure of confirmation. (shrink)

Reprint of the ed. published by Viking Press, New York.

Truthmaker theory has been used to argue for substantial conclusions about the categorial structure of the world, in particular that states of affairs are needed to play the role of truthmakers. In this paper, I argue that closely considering the role of aboutness in truthmaking, that is considering what truthbearers are about, yields the result that there is no good truthmaker-based reason to think that truthmakers must be states of affairs understood as existing entities, whether complex or simple. First, I (...) introduce an aboutness-based account of truthmaking as a metaphysically modest alternative to the orthodox necessitarian account of truthmaking. Second, I discuss the distinction between states and events that has been made on the basis of linguistic evidence regarding aspectual markers and nominalisation. I argue that the modest approach to truthmaking allows us to accept that there is a real distinction between states and events without requiring that the distinction is ontologically substantial. Specifically, what we are talking about with state-truthbearers really differs from what we are talking about with event-truthbearers, but this difference need not be understood as a difference in kinds of entities. Because of its overall modesty, this is a theoretically virtuous result. (shrink)

This volume is devoted to Lewis's work in metaphysics and epistemology. Topics covered include properties, ontology, possibility, truthmaking, probability, the mind-body problem, vision, belief, and knowledge. The purpose of this collection, and the volumes that precede and follow it, is to disseminate more widely the work of an eminent and influential contemporary philosopher. The volume will serve as a useful work of reference for teachers and students of philosophy.

A central problem for any truthmaker theory is the problem of negative truths. In this paper, I develop a novel, piecemeal strategy for solving this problem. The strategy puts central focus on a truth-relevant notion of aboutness within a metaphysically modest version of truthmaker theory and uses key conceptual tools gained by taking a deeper look at the best attempts to solve the problem of intentionality. I begin this task by critically discussing past proposed solutions to P-NEG in light of (...) Russell’s debate with Demos. This reveals a central difficulty with addressing the problem, specifically that one cannot be committed to incompatibility facts in one’s account of negation and of the truth of negative truths. I then present an aboutness-based version of truthmaker theory. Utilising what I call the strict and full account of aboutness, I extract aboutness-based theories of truth and falsity. I use this machinery to present a promising new strategy for solving P-NEG which does not have the problems of alternative approaches. Finally, I present and respond to some potential objections. (shrink)

In this paper, I first present an overview of Asay’s _A Theory of Truthmaking_, highlighting what I take to be some of its most attractive features, especially his re-invigoration of the ontological understanding of truthmaking and his defence of ontology-first truthmaking over explanation-first truthmaking. Then, I articulate what I take to be a puzzling potential inconsistency: (a) he appeals to considerations to do with aboutness in criticising how well ontological views account for truth while (b) ruling out aboutness from the (...) right account of truthmaking. He argues, instead, that necessitation is both necessary and sufficient for truthmaking (§3.3). I suggest that adding aboutness to one’s account in the right way is not just compatible with but important for ontology-first truthmaking. I do all this to invite Asay to clarify his position on these matters. Overall, Asay’s worldview displays the fruitfulness of an ontologically serious approach to metaphysics that puts truthmaking centre-stage. (shrink)

As the crisis around Covid-19 evolves, it becomes clear that there are numerous negative side-effects of the lockdown strategies implemented by many countries. Currently, more evidence becomes available that the lockdowns may have more negative effects than positive effects. For instance, many measures taken in a lockdown aimed at protecting human life may compromise the immune system, and purpose in life, especially of vulnerable groups. This leads to the paradoxical situation of compromising the immune system and physical and mental health (...) of many people, including the ones we aim to protect. Also, it is expected that hundreds of millions of people will die from hunger and postponed medical treatments. Other side effects include financial insecurity of billions of people, physical and mental health problems, and increased inequalities. The economic and health repercussions of the crisis will be falling disproportionately on young workers, low-income families and women, and thus exacerbate existing inequalities. As the virus outbreak and media coverage spread fear and anxiety, superstition, cognitive dissonance reduction and conspiracy theories are ways to find meaning and reduce anxiety. These behavioral aspects may play a role in the continuance of lockdown decisions. Based on theories regarding agnotology (i.e. the ways ignorance or doubt about certain topics is created by means of withholding or presenting information in a certain way), social influence, superstition and stress and coping, I seek to explain the social and behavioral aspects of human behavior in times of crises. Both the Covid-19 crisis itself as well as the resulting economic and (mental) health crisis are global problems that may require global solutions. I present a model of drivers and outcomes of lockdown behaviors and offer suggestions and a tool to counteract the negative psychological effects by means of online life crafting therapeutic writing interventions. (shrink)

Recently, philosophers have tried to develop a version of truthmaker theory which ties the truthmaking relation closely to the notion of fundamentality. In fact, some of these truthmaker-fundamentalists, as I call them, assume that the notion of fundamentality is intelligible in part by citing, as central examples of fundamentals, truthmakers, which they understand necessarily as constituents of fundamental reality. The aim of this paper is first to bring some order and clarity to this discussion, sketching how far TF is compatible (...) with orthodox truthmaking, and then critically to evaluate the limits of TF. It will be argued that truthmaker theory cannot directly help with articulating the nature of fundamental reality and that T-REL does not necessarily relate truths with anything more fundamental, unless what is fundamental is what the truthbearers in question are about. I shall argue that TF faces a rather thorny dilemma and some general problems. I shall present two exhaustive types of fundamentalism on which a version of TF can be based: deflationary and inflationary. It will be argued that each version of TF runs into significant troubles accounting for all truth, specifically ordinary truths and metaphysical truths about the relations between ordinary facts and fundamental facts. I shall not attempt to solve these problems, but rather, at the end, diagnose the issues with TF as lying in the difficulties with reconciling the manifest image with the scientific and metaphysical images of reality. (shrink)

The what next question for moral error theorists asks: if moral discourse is systematically error-ridden, then how, if at all, should moral error theorists continue to employ moral discourse? Recent years have seen growing numbers of moral error theorists come to endorse a wider normative error theory according to which all normative judgements are untrue. But despite this shift, the what next question for normative error theorists has received far less attention. This paper presents a novel solution to this question: (...) revolutionary normative subjectivism. Along the way, two primary contributions are advanced. First, a non-normative methodology for answering the normative error theoretic what next question is developed. Second, revolutionary normative subjectivism is presented and defended in accordance with the proposed methodology. (shrink)

In the first Critique, Kant famously holds a novel practical notion of Belief (Glauben) as assent justified not by evidence but by practical considerations. This paper examines the early development of Kant’s practical notion of Belief prior to the first Critique. It aims to make clear what prompted Kant to develop this notion in the first place, and how this notion came to assume its crucial role in Kant’s critical system. This development, I argue, has two main steps. The first (...) is his introduction of a practical notion of Belief in mid-to-late 1760s. I argue that he did so because he regards this notion as a useful tool to get ordinary people to justifiably commit to the existence of God and an after-life. The second step is Kant’s abandonment of the objective validity of his logical proof of God around 1772. This step elevated Belief from a merely useful means to the only justified way to commit to the existence of God and an after-life. This second step, I argue, is closely connected to Kant’s pivot to the view that the objective validity of concepts requires sensibly given objects, and it is motivated by Kant’s concern with subject-cancelling real repugnance. (shrink)

Coherence is the property of propositions hanging or fitting together. Intuitively, adding a proposition to a set of propositions should be compatible with either increasing or decreasing the set’s degree of coherence. In this paper we show that probabilistic coherence measures based on relative overlap are in conflict with this intuitive verdict. More precisely, we prove that according to the naive overlap measure it is impossible to increase a set’s degree of coherence by adding propositions and that according to the (...) refined overlap measure no set’s degree of coherence exceeds the degree of coherence of its maximally coherent subset. We also show that this result carries over to all other subset-sensitive refinements of the naive overlap measure. As both results stand in sharp contrast to elementary coherence intuitions, we conclude that extant relative overlap measures of coherence are inadequate. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:The Rhetoric of Philosophical Politics in Plato's Seventh LetterV. Bradley LewisThe name Syracuse has come to stand as an emblem of the problematic relationship between philosophy and politics. While the sources1 differ on specifics, we can be confident that Plato visited there at least three times between 387 and 362 B.C. On his first trip, during the reign of Dionysius I, he became acquainted with Dion, the tyrant's brother-in-law. (...) When the elder Dionysius died, Dion, a devotee of philosophy, apparently contrived for the old man's son, namesake, and successor to invite Plato back, believing that the young tyrant could be philosophically educated and convinced to lay down tyranny in favor of a new regime based on the rule of law. The plan was defeated, however, by a combination of Dionysius's dissolute life and opposition by Dion's enemies at court. Dion was exiled, and Plato returned to the Academy. Dion implored Plato to return to Syracuse on the basis of reports of Dionysius II's renewed resolution to take up philosophy and by the tyrant himself (who seems to have made some thinly veiled threats against the still-exiled Dion). Plato's second visit to Dionysius was no more successful than the first, however, and he considered himself fortunate to have escaped with his life. After a meeting at which Plato recounted the events of his final trip, Dion marshaled an expeditionary force, which included volunteers from the Academy, and set out to expel Dionysius II by violence. The effort succeeded, but the new regime was itself riven by faction, and Dion was assassinated in 353.2The principal legacy of this ill-starred episode is contained in the letters that have come down to us under the name of Plato, particularly those numbered seven and eight. Scholarly discussion of Plato's Seventh Letter has usually focused on three questions: the doctrinal content of the letter and its relationship to the doctrinal content of the dialogues; the character of the letter as an apologia for Plato's Syracusan activities; and the general authenticity of the letter. While the second of these questions focuses correctly [End Page 23] on the rhetorical character of the letter, it ignores the most obvious aspect, namely, the letter's explicit addressees: the friends and comrades of Dion, and their request for political advice. If we take this rhetorical element with sufficient seriousness, we will see that the content of the letter is fully consistent with the teachings of the political dialogues, a point that tells in favor of the authenticity of the letter. Specifically, a focus on the rhetorical character of the letter reveals that its content is determined mostly by what emerges as an effort by Plato to influence his correspondents by moderating their understandable desire for vengeance and thus to forestall further bloodshed and disorder in Syracuse. What is most important about the letter, then, is not so much its account of Plato's actions in Syracuse, but its unveiling of his intentions with respect to Dion's followers. It is not the philosophical-political blueprint, sketched vaguely in the Seventh Letter, that is most important,3 but the concrete effort to mitigate the passions of his correspondents. Read in this light, the letter becomes even more important, since it contradicts the popular image of Plato as a proponent of dangerous political utopianism and portrays a more subtle relationship between philosophy and politics.1. Dion's intentions, Plato's apologyTo the extent that the rhetoric of the letter has been treated, commentators have usually focused on Plato's (or whoever the author) defense of his own actions in Sicily.4 While there is certainly warrant for this approach, the most important fact about the letter concerns its intended audience, the "relatives and comrades of Dion."5 As Plato explains in the opening of the letter, these are the men who have sought not only his advice, but his cooperation in completing the political project halted by Dion's death at the hands of several of his other purported "allies."The most striking feature of the rhetorical structure is that, while the letter... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:The Rhetoric of Philosophical Politics in Plato's Seventh LetterV. Bradley LewisThe name Syracuse has come to stand as an emblem of the problematic relationship between philosophy and politics. While the sources1 differ on specifics, we can be confident that Plato visited there at least three times between 387 and 362 B.C. On his first trip, during the reign of Dionysius I, he became acquainted with Dion, the tyrant's brother-in-law. (...) When the elder Dionysius died, Dion, a devotee of philosophy, apparently contrived for the old man's son, namesake, and successor to invite Plato back, believing that the young tyrant could be philosophically educated and convinced to lay down tyranny in favor of a new regime based on the rule of law. The plan was defeated, however, by a combination of Dionysius's dissolute life and opposition by Dion's enemies at court. Dion was exiled, and Plato returned to the Academy. Dion implored Plato to return to Syracuse on the basis of reports of Dionysius II's renewed resolution to take up philosophy and by the tyrant himself (who seems to have made some thinly veiled threats against the still-exiled Dion). Plato's second visit to Dionysius was no more successful than the first, however, and he considered himself fortunate to have escaped with his life. After a meeting at which Plato recounted the events of his final trip, Dion marshaled an expeditionary force, which included volunteers from the Academy, and set out to expel Dionysius II by violence. The effort succeeded, but the new regime was itself riven by faction, and Dion was assassinated in 353.2The principal legacy of this ill-starred episode is contained in the letters that have come down to us under the name of Plato, particularly those numbered seven and eight. Scholarly discussion of Plato's Seventh Letter has usually focused on three questions: the doctrinal content of the letter and its relationship to the doctrinal content of the dialogues; the character of the letter as an apologia for Plato's Syracusan activities; and the general authenticity of the letter. While the second of these questions focuses correctly [End Page 23] on the rhetorical character of the letter, it ignores the most obvious aspect, namely, the letter's explicit addressees: the friends and comrades of Dion, and their request for political advice. If we take this rhetorical element with sufficient seriousness, we will see that the content of the letter is fully consistent with the teachings of the political dialogues, a point that tells in favor of the authenticity of the letter. Specifically, a focus on the rhetorical character of the letter reveals that its content is determined mostly by what emerges as an effort by Plato to influence his correspondents by moderating their understandable desire for vengeance and thus to forestall further bloodshed and disorder in Syracuse. What is most important about the letter, then, is not so much its account of Plato's actions in Syracuse, but its unveiling of his intentions with respect to Dion's followers. It is not the philosophical-political blueprint, sketched vaguely in the Seventh Letter, that is most important,3 but the concrete effort to mitigate the passions of his correspondents. Read in this light, the letter becomes even more important, since it contradicts the popular image of Plato as a proponent of dangerous political utopianism and portrays a more subtle relationship between philosophy and politics.1. Dion's intentions, Plato's apologyTo the extent that the rhetoric of the letter has been treated, commentators have usually focused on Plato's (or whoever the author) defense of his own actions in Sicily.4 While there is certainly warrant for this approach, the most important fact about the letter concerns its intended audience, the "relatives and comrades of Dion."5 As Plato explains in the opening of the letter, these are the men who have sought not only his advice, but his cooperation in completing the political project halted by Dion's death at the hands of several of his other purported "allies."The most striking feature of the rhetorical structure is that, while the letter... (shrink)

A central tenet of truthmaker theory is that necessitation is necessary for truthmaking (NEC). This paper defends NEC in a novel, piecemeal way, namely by responding to a potential counterexample involving a changing past. If Carter won a race at t1 but is later disqualified at t2, then Carter no longer won at t1. A wholly past event seems to have changed in the future. The event makes ‘Carter won the race at t1’ (RACE) true between t1‐2 but fails to (...) make it true at t2. So, we have a potential counterexample to necessitation: a truthmaker of RACE fails in another context to make the same truthbearer RACE true. I argue that the best solution to this challenge is not that there are different truthbearers at t1‐2 and t2 (the semantic response), or that RACE was never true because of the future disqualification or will always be true despite the future disqualification. The best solution is to accept that the past can change: past events can change based on what happens in the future (e.g., via their effects). This paper's novel defence of necessitation will illustrate the importance of utilising explicitly ontological and commonsensical tools in accounting for truth. (shrink)

Tacking by conjunction is a deep problem for Bayesian confirmation theory. It is based on the insight that to each hypothesis h that is confirmed by a piece of evidence e one can ‘tack’ an irrelevant hypothesis h′ so that h∧h′ is also confirmed by e. This seems counter-intuitive. Existing Bayesian solution proposals try to soften the negative impact of this result by showing that although h∧h′ is confirmed by e, it is so only to a lower degree. In this (...) article we outline some problems of these proposals and develop an alternative solution based on a new concept of confirmation that we call genuine confirmation. After pointing out that genuine confirmation is a necessary condition for cumulative confirmation we apply this notion to the tacking by conjunction problem. We consider both the question of what happens when irrelevant hypotheses are added to a hypothesis h that is confirmed by e as well as the question of what happens when h is disconfirmed. The upshot of our discussion will be that genuine confirmation provides a robust solution for each of the different perspectives. _1_ Introduction _2_ Tacking by Conjunction: Existing Solution Proposals _3_ Genuine Confirmation _3.1_ Content elements and content parts _3.2_ Qualitative genuine confirmation _3.3_ Quantitative genuine confirmation _4_ Tacking by Conjunction: The Case of Confirmation _5_ Tacking by Conjunction: The Case of Disconfirmation _6_ Tacking by Conjunction: Adding Multiple Hypotheses _7_ Conclusion Appendix. (shrink)

Relative overlap measures of coherence have recently been shown to have two devastating properties: according to the plain relative overlap measure, the degree of coherence of any set of propositions cannot be increased by adding further propositions, and according to the refined relative overlap measure, no set can be more coherent than its most coherent two-element subset. This result has been taken to rule out relative overlap as a foundation for a probabilistic explication of coherence. The present paper shows that (...) this view is premature: we propose a relative overlap measure that does not fall victim to the two properties. The guiding idea is to employ a well-established recipe for the construction of coherence measures and to adapt it to the idea of relative overlap. We show that this new measure keeps up with, or even outperforms, former overlap measures in a set of desiderata for coherence measures and a collection of popular test cases. This result re-establishes relative overlap as a candidate for a proper formalization of coherence. (shrink)

The first volume of this series presents fifteen selected papers dealing with a variety of topics in ontology, philosophy of mind, and philosophy of language.

Recently there have been several attempts in formal epistemology to develop an adequate probabilistic measure of coherence. There is much to recommend probabilistic measures of coherence. They are quantitative and render formally precise a notion—coherence—notorious for its elusiveness. Further, some of them do very well, intuitively, on a variety of test cases. Siebel, however, argues that there can be no adequate probabilistic measure of coherence. Take some set of propositions A, some probabilistic measure of coherence, and a probability distribution such (...) that all the probabilities on which A’s degree of coherence depends (according to the measure in question) are defined. Then, the argument goes, the degree to which A is coherent depends solely on the details of the distribution in question and not at all on the explanatory relations, if any, standing between the propositions in A. This is problematic, the argument continues, because, first, explanation matters for coherence, and, second, explanation cannot be adequately captured solely in terms of probability. We argue that Siebel’s argument falls short. (shrink)

Striving for a probabilistic explication of coherence, scholars proposed a distinction between agreement and striking agreement. In this paper I argue that only the former should be considered a genuine concept of coherence. In a second step the relation between coherence and reliability is assessed. I show that it is possible to concur with common intuitions regarding the impact of coherence on reliability in various types of witness scenarios by means of an agreement measure of coherence. Highlighting the need to (...) separate the impact of coherence and specificity on reliability it is finally shown that a recently proposed vindication of the Shogenji measure qua measure of coherence vanishes. (shrink)

This article provides an empirical example and an analytic argument for how queer theory can be useful for sociological inquiries of gender relations. Using data collected through participant observation of a rock music subculture, the author addresses the importance of conceptualizing sexuality and gender as analytically distinct. There are five major findings drawn from this analysis. First, members of this subculture queered sexuality despite identifying as heterosexual. Second, there is a dissonance between how members talked about sexuality and how they (...) enacted sexuality. Third, queering sexuality opened space for subverting hegemonic gender relations. Fourth, some forms of gender resistance relied on and reinscribed hegemonic sexual relations. Fifth, only by analyzing sexuality at multiple levels of analysis was this play of resistance and hegemony revealed. Both empirical and theoretical implications are suggested. (shrink)

The concepts of coherence and confirmation are closely intertwined: according to a prominent proposal coherence is nothing but mutual confirmation. Accordingly, it should come as no surprise that both are confronted with similar problems. As regards Bayesian confirmation measures these are illustrated by the problem of tacking by conjunction. On the other hand, Bayesian coherence measures face the problem of belief individuation. In this paper we want to outline the benefit of an approach to coherence and confirmation based on content (...) elements. It will be shown that the resulting concepts, called genuine coherence and genuine confirmation, can be used in order to solve the two mentioned problems. In a final section we present some results on degrees of genuine coherence and genuine confirmation. (shrink)

(Citation/Reference) Williams, S. H. Lewis Carroll handbook.

As artificial intelligence (AI) technology advances, we increasingly delegate mental tasks to machines. However, today’s AI systems usually do these tasks with an unusual imbalance of insight and understanding: new, deeper insights are present, yet many important qualities that a human mind would have previously brought to the activity are utterly absent. Therefore, it is crucial to ask which features of minds have we replicated, which are missing, and if that matters. One core feature that humans bring to tasks, when (...) dealing with the ambiguity, emergent knowledge, and social context presented by the world, is reflection. Yet this capability is completely missing from current mainstream AI. In this paper we ask what reflective AI might look like. Then, drawing on notions of reflection in complex systems, cognitive science, and agents, we sketch an architecture for reflective AI agents, and highlight ways forward. (shrink)

(Statement of Responsibility) by Lewis Carroll ; with illustrations in colors.

One fundamental assumption often made in the literature on unawareness is that risk preferences are invariant to changes of awareness. We study how exposure to unawareness affects choices under risk. Participants in our experiment choose repeatedly between varying sure outcomes and a lottery in three phases. All treatments are exactly identical in phase 1 and phase 3, but differ in phase 2. There are five different treatments pertaining to the lottery faced in phase 2: The control treatment, the treatment with (...) awareness of unawareness of lottery outcomes but known number of outcomes, the treatment with awareness of unawareness of outcomes but with unknown number of outcomes, the treatment with unawareness of unawareness of some outcomes, and the treatment with an ambiguous lottery. We study both whether behavior differs in phase 3 across treatments and whether differences of subjects’ behavior between phases 1 and phase 3 differ across treatments. We observe no significant treatment effects. (shrink)

The two works reprinted in this volume are a unique fusion of logical thought and inimitable whimsy. Written by the 19th-century mathematician who also gave us "Alive in Wonderland", they are among the most entertaining logical works ever written, and contain some of the most thought-provoking puzzles ever devised.

One of the integral parts of Bayesian coherentism is the view that the relation of ‘being no less coherent than’ is fully determined by the probabilistic features of the sets of propositions to be ordered. In the last one and a half decades, a variety of probabilistic measures of coherence have been put forward. However, there is large disagreement as to which of these measures best captures the pre-theoretic notion of coherence. This paper contributes to the debate on coherence measures (...) by considering three classes of adequacy constraints. Various independence and dependence relations between the members of each class will be taken into account in order to reveal the ‘grammar’ of probabilistic coherence measures. Afterwards, existing proposals are examined with respect to this list of desiderata. Given that for purely mathematical reasons there can be no measure that satisfies all constraints, the grammar allows the coherentist to articulate an informed pluralist stance as regards probabilistic measures of coherence. (shrink)