Using new techniques for controlling the categoricity spectrum of a structure, we construct a structure with degree of categoricity but infinite spectral dimension, answering a question of Bazhenov, Kalimullin and Yamaleev. Using the same techniques, we construct a computably categorical structure of non-computable Scott rank.

We review the current knowledge concerning strong jump-traceability. We cover the known results relating strong jump-traceability to randomness, and those relating it to degree theory. We also discuss the techniques used in working with strongly jump-traceable sets. We end with a section of open questions.

We show the existence of noncomputable oracles which are low for Demuth randomness, answering a question in [15] (also Problem 5.5.19 in [34]). We fully characterize lowness for Demuth randomness using an appropriate notion of traceability. Central to this characterization is a partial relativization of Demuth randomness, which may be more natural than the fully relativized version. We also show that an oracle is low for weak Demuth randomness if and only if it is computable.

We define the Scott complexity of a countable structure to be the least complexity of a Scott sentence for that structure. This is a finer notion of complexity than Scott rank: it distinguishes between whether the simplest Scott sentence is $\Sigma _{\alpha }$, $\Pi _{\alpha }$, or $\mathrm {d-}\Sigma _{\alpha }$. We give a complete classification of the possible Scott complexities, including an example of a structure whose simplest Scott sentence is $\Sigma _{\lambda + 1}$ for $\lambda $ a limit (...) ordinal. This answers a question left open by A. Miller.We also construct examples of computable structures of high Scott rank with Scott complexities $\Sigma _{\omega _1^{CK}+1}$ and $\mathrm {d-}\Sigma _{\omega _1^{CK}+1}$. There are three other possible Scott complexities for a computable structure of high Scott rank: $\Pi _{\omega _1^{CK}}$, $\Pi _{\omega _1^{CK}+1}$, $\Sigma _{\omega _1^{CK}+1}$. Examples of these were already known. Our examples are computable structures of Scott rank $\omega _1^{CK}+1$ which, after naming finitely many constants, have Scott rank $\omega _1^{CK}$. The existence of such structures was an open question. (shrink)

EveryK-trivial set is computable from an incomplete Martin-Löf random set, i.e., a Martin-Löf random set that does not compute the halting problem.

A problem is a multivalued function from a set of instances to a set of solutions. We consider only instances and solutions coded by sets of integers. A problem admits preservation of some computability-theoretic weakness property if every computable instance of the problem admits a solution relative to which the property holds. For example, cone avoidance is the ability, given a noncomputable set A and a computable instance of a problem ${\mathsf {P}}$, to find a solution relative to which A (...) is still noncomputable.In this article, we compare relativized versions of computability-theoretic notions of preservation which have been studied in reverse mathematics, and prove that the ones which were not already separated by natural statements in the literature actually coincide. In particular, we prove that it is equivalent to admit avoidance of one cone, of $\omega $ cones, of one hyperimmunity or of one non- $\Sigma ^{0}_1$ definition. We also prove that the hierarchies of preservation of hyperimmunity and non- $\Sigma ^{0}_1$ definitions coincide. On the other hand, none of these notions coincide in a nonrelativized setting. (shrink)

We introduce several highness notions on degrees related to the problem of computing isomorphisms between structures, provided that isomorphisms exist. We consider variants along axes of uniformity, inclusion of negative information, and several other problems related to computing isomorphisms. These other problems include Scott analysis (in the form of back-and-forth relations), jump hierarchies, and computing descending sequences in linear orders.

It is commonly believed that Edmund Husserl (1859-1938), well known as the founder of phenomenology and as the teacher of Heidegger, was unable to free himself from the framework of a classical metaphysics of subjectivity. Supposedly, he never abandoned the view that the world and the Other are constituted by a pure transcendental subject, and his thinking in consequence remains Cartesian, idealistic, and solipsistic. The continuing publication of Husserl’s manuscripts has made it necessary to revise such an interpretation. Drawing upon (...) both Husserl’s published works and posthumous material, Husserl’s Phenomenology incorporates the results of the most recent Husserl research. It is divided into three parts, roughly following the chronological development of Husserl’s thought, from his early analyses of logic and intentionality, through his mature transcendental-philosophical analyses of reduction and constitution, to his late analyses of intersubjectivity and lifeworld. It can consequently serve as a concise and updated introduction to his thinking. (shrink)

... Let me start my investigation by taking a brief look at the way in which self-awareness is expressed linguistically, as in the sentences "I am tired" or ...

If one comes to Phénoménologie de la perception after having read Sein und Zeit (or Prolegomena zur Geschichte des Zeitbegriffs) one will be in for a surprise. Both works contain a number of both implicit and explicit references to Husserl, but the presentation they give is so utterly different, that one might occasionally wonder whether they are referring to the same author. Thus nobody can overlook that Merleau-Ponty’s interpretation of Husserl differs significantly from Heidegger’s. It is far more charitable. In (...) fact, when evaluating the merits of respectively Husserl and Heidegger, Merleau-Ponty often goes very much against the standard view. This is not only the case in his notorious remark on the very first page of Phénoménologie de la Perception where he declares that the whole of Sein und Zeit is nothing but an explication of Husserl’s notion of Lifeworld, but also - to give just one further example - in one of his Sorbonne-lectures, where Merleau-Ponty writes that Husserl took the issue of historicity far more seriously than Heidegger. (shrink)

The Oxford Handbook of Contemporary Phenomenology presents twenty-eight essays by some of the leading figures in the field, and gives an authoritative overview of the type of work and range of topics found and discussed in contemporary phenomenology. It is the definitive guide to what is currently going on in phenomenology, and offers a rich source of insight and stimulation for philosophers, students of philosophy, and for people working in other disciplines of the humanities, social sciences, and sciences, who are (...) interested in the state of phenomenology today. The essays explore a diverse range of topics, including intentionality, embodiment, perception, naturalism, temporality, self-consciousness, language, knowledge, ethics, politics, art and religion, and will make it clear that phenomenology, far from being a tradition of the past, is alive and in a position to make valuable contributions to contemporary thought. (shrink)

ABSTRACT In this paper, I present data involving the use of the Romanian slur ‘țigan’, consideration of which leads to the postulation of a sui-generis, irreducible type of use of slurs. This type of use is potentially problematic for extant theories of slurs. In addition, together with other well-established uses, it shows that there is more variation in the use of slurs than previously acknowledged. I explain this variation by construing slurs as polysemous. To implement this idea, I appeal to (...) a rich-lexicon account of polysemy. I show how such a theory can be applied to slurs and discuss several important issues that arise. (shrink)

In this entry, I tackle the phenomenon known as "faultless disagreement", considered by many authors to pose a challenge to the main views on the semantics of subjective expressions. I first present the phenomenon and the challenge, then review the main answers given by contextualist, absolutist and relativist approaches to the expressions in question. I end with signaling two issues that might shape future discussions about the role played by faultless disagreement in semantics.

Many times, what we say proves to be wrong. It might turn out that what we took to be a comforting remark was, in fact, making things worse. Or that a joke was inappropriate. Or that yelling out loud was rude. More importantly for this paper, there are plenty of cases in which what we said turns out to be false: we spoke without paying attention, we were misinformed or tricked, or we made a reasoning mistake. -/- A particular instance (...) of this latter phenomenon is when someone changes their perspective and doesn't find their previous assertions true anymore. For example, imagine that you used to like licorice as a child, and that you went around saying things like "Licorice is tasty." But, growing up, you find licorice too strong and quite boring; your tastes have changed. While the taste of licorice itself has not changed, you are not going around anymore uttering "Licorice is tasty." In fact, in certain cases, you might even think that what you said in your childhood was wrong - at least in light of your present preferences. -/- Sometimes we "take back" the assertions we made when we realize they are no longer true. Such speech acts of taking back can be performed in various ways: more formally, as effected in a court of law or when an official speaks to the press, or more informally in our day-by-day interactions. These acts of taking back are known as retraction. Retraction is usually achieved by employing certain linguistic markers ('I was wrong', 'I was mistaken', 'I retract', "Scratch that' etc.) that signal that the retractor takes their previous speech act to be faulty in a certain way. -/- This phenomenon has formed the basis for a popular argument used by relativists about a variety of natural language expressions (predicates of taste, epistemic modals, moral and aesthetic claims etc.) in support of their view. Recently, several considerations (mostly from contextualists about the same expressions), both from the armchair and based on empirical studies, have been offered to undercut the support retraction was thought to provide for relativism. In this paper, I consider and re-evaluate that support in light of both types of considerations, showing that neither of them decisively undermines it. However, to survive the contextualist counterattack, the relativist needs to pay a price: that is, she will be forced to make some concessions or rethink certain claims. I show what I think those concessions should be and what needs to be rethought (and how). The upshot is that, while the support retraction offers relativism is not as strong as initially believed, appeal to retraction remains a legitimate move in the debate. In section 1, I introduce the views in the debate and clarify the phenomenon of retraction and its dialectical role. Armchair data are investigated in section 2, proper experimental studies in section 3, while section 4 summarizes and concludes. (shrink)

The Oxford Handbook of the History of Phenomenology contains thirty-seven new essays by leading scholars in the field. The essays all highlight historical influences, connections, and developments and provide an in-depth coverage of the development of phenomenology; one that allows for a better comprehension and assessment of the continuity as well as diversity of the phenomenological tradition. The handbook is divided into three distinct parts. The first part contains chapters that address the way phenomenology has been influenced by earlier periods (...) or figures in the history of philosophy. The second part contains chapters targeting prominent phenomenologists: How was their work affected by earlier figures, how did their own views change over time, and what kind of influence did they exert on subsequent thinkers? The contributions in the third part trace various core topics such as subjectivity, intersubjectivity, embodiment, spatiality, and imagination in the work of different phenomenologists, in order to explore how the notions were transformed, enriched, and expanded up through the century. The handbook will be a source of insight for philosophers, students of philosophy, and for people working in other disciplines of the humanities, social sciences, and sciences, who are interested in the phenomenological tradition. It is an authoritative guide to how phenomenology started, how it developed, and where it is heading. (shrink)

When people speak, their words never fully encode what they mean, and the context is always compatible with a variety of interpretations. How can comprehension ever be achieved? Wilson and Sperber argue that comprehension is an inference process guided by precise expectations of relevance. What are the relations between the linguistically encoded meanings studied in semantics and the thoughts that humans are capable of entertaining and conveying? How should we analyse literal meaning, approximations, metaphors and ironies? Is the ability to (...) understand speakers' meanings rooted in a more general human ability to understand other minds? How do these abilities interact in evolution and in cognitive development? MEANING AND RELEVANCE sets out to answer these and other questions, enriching and updating relevance theory and exploring its implications for linguistics, philosophy, cognitive science and literary studies. (shrink)

This is the editor’s introduction to the book symposium on Jason Stanley’s influential book "How Propaganda Words" (Oxford University Press, 2015). After a few brief remarks situating the book in the landscape of current analytic philosophy, I offer a detailed presentation of each chapter of the book, in order to familiarize the reader with its main tenets and with the author’s argumentative strategy. I flag the issues that the contributors to the symposium discuss, and describe their main points. I end (...) with expressing hope that the symposium will help continue the conversation around ideology and propaganda within analytic philosophy. (shrink)

Phenomenology shares the conviction that the critical stance proper to philosophy requires a move away from a straightforward metaphysical or empirical investigation of objects to an investigation of the very framework of meaning and intelligibility that makes any such straightforward investigation possible in the first place. It precisely asks how something like objectivity is possible in the first place. Phenomenology has also made important contributions to most areas of philosophy. Contemporary phenomenology is a somewhat heterogeneous field. In general, this Handbook (...) as a whole might function as a representative sample of what is currently happening in phenomenology, and make it clear to philosophers from other traditions that phenomenology, far from being a tradition of the past, is quite alive and in a position to make valuable contributions to contemporary thought. (shrink)

We extend the notion of limitwise monotonic functions to include arbitrary computable domains. We then study which sets and degrees are support increasing limitwise monotonic on various computable domains. As applications, we provide a characterization of the sets S with computable increasing η-representations using support increasing limitwise monotonic sets on ℚ and note relationships between the class of order-computable sets and the class of support increasing limitwise monotonic sets on certain domains.

In this paper, I explore a range of existent and possible ameliorative semantic theories of gender terms: invariantism, according to which gender terms are not context-sensitive, contextualism, according to which the meaning of gender terms is established in the context of use, and relativism, according to which the meaning of gender terms is established in the context of assessment. I show that none of these views is adequate with respect to the plight of trans people to use their term of (...) choice to self-identify and be referred to accordingly. I then consider an invariantist view based on self-identification and explore some of its challenges. (shrink)

How are non-declarative sentences understood? How do they differ semantically from their declarative counterparts? Answers to these questions once made direct appeal to the notion of illocutionary force. When they proved unsatisfactory, the fault was diagnosed as a failure to distinguish properly between mood and force. For some years now, efforts have been under way to develop a satisfactory account of the semantics of mood. In this paper, we consider the current achievements and future prospects of the mood-based semantic programme.

We show that the fact that the first player wins every instance of Galvin’s “racing pawns” game is equivalent to arithmetic transfinite recursion. Along the way we analyze the satisfaction relation for infinitary formulas, of “internal” hyperarithmetic comprehension, and of the law of excluded middle for such formulas.

行動経済学によって、さまざまに系統的な不合理さが見えてきた。手をかけることが高評価をもたらすIKEA効果、やる気をそいでいる高額ボーナス、自分で思いついた(と思わせられた)意見は好ましい、雑用は一気に 片づけるほうが楽...。行動経済学研究の第一人者が、わたしたちがなぜ、どのように不合理な行動をしてしまうのかをユニークな実験で紹介。わかりやすい数々の実例で経済の真の姿を解明し、よりよい決断へとつなげ る話題作。.

The issue of how to identify the liability of subjects after a traffic accident takes place remains a puzzle regarding the SAE classification system. The SAE system is not good at dealing with the problem of responsibility evaluation; therefore, building a new classification system for self-driving cars from the perspective of the subject's liability is a possible way to solve this problem. This new system divides automated driving into three levels: i) assisted driving based on the will of drivers, ii) (...) automated driving based on the will of the manufacturers, and iii) fully automated driving based on social will. The corresponding responsible subjects for level one, level two, and level three are the drivers, the manufacturers, and society, respectively. (shrink)

Dan Zahavi engages with classical phenomenology, philosophy of mind, and a range of empirical disciplines to explore the nature of selfhood. He argues that the most fundamental level of selfhood is not socially constructed or dependent upon others, but accepts that certain dimensions of the self and types of self-experience are other-mediated.

The relationship of self, and self-awareness, and experience: exploring classical phenomenological analyses and their relevance to contemporary discussions in ...

This revised edition includes a new Preface outlining developments in Relevance Theory since 1986, discussing the more serious criticisms of the theory, and ...

Despite the importance of ethical leadership, the impacts of its different facets on firm-level performance are unclear. Drawing on the resource-based view of the firm and the group engagement model, we propose that ethical leadership consisting of leader humane orientation, leader responsibility and sustainability orientation and leader moderation orientation are beneficial to firm performance, and leader justice orientation plays moderating roles. We empirically tested this theoretical framework employing multi-source survey data collected from 264 Chinese firms. The findings reveal that both (...) leader humane orientation and leader responsibility and sustainability orientation have positive influences on both firm financial and social performance, while leader moderation orientation only has positive influence on firm financial performance. In addition, leader justice orientation positively moderates the relationship between leader humane orientation and leader responsibility and sustainability orientation and financial performance as well as the relationship between leader moderation orientation and social performance. These findings provide theoretical and practical implications for understanding how different facets of ethical leadership jointly function to influence firm performance. (shrink)

Much philosophical work has examined both imperatival and non-imperatival forms of address that aim to motivate others to action. But one such kind of address has received relatively little attention: begging. This is partly surprising as begging, both as an individual act and as a widespread social practice, raises acute, yet difficult to articulate, moral and political concerns. In this paper, I identify a central form of the phenomenon which constitutively involves communicating one’s relative powerlessness as a means of motivating (...) one’s target to act. I argue that this form of begging is present in a number of cases that animate many of our pre-theoretic normative worries about begging. I argue that when begging of this kind is bad for the beggar herself, this is so because either (i) the invoked powerlessness is bad for the beggar and thereby gives the action a negative evaluative meaning, or (ii) the invoked powerlessness is good/neutral, but the act of begging precludes or replaces valuable ways of interacting that the parties have reasons to care about in the context. In a slogan, the badness of begging revolves around power and helplessness. (shrink)

La fenomenología ha sido atacada recientemente por los promotores del realismo especulativo. En este artículo presento y analizo estas críticas, y argumento que, o bien son superficiales y simplistas, o bien carecen de novedad.Key words: Phenomenology, speculative realism, correlationism, idealism, naturalism.

Reason, we are told, is what makes us human, the source of our knowledge and wisdom. If reason is so useful, why didn't it also evolve in other animals? If reason is that reliable, why do we produce so much thoroughly reasoned nonsense? In their groundbreaking account of the evolution and workings of reason, Hugo Mercier and Dan Sperber set out to solve this double enigma. Reason, they argue with a compelling mix of real-life and experimental evidence, is not geared (...) to solitary use, to arriving at better beliefs and decisions on our own. What reason does, rather, is help us justify our beliefs and actions to others, convince them through argumentation, and evaluate the justifications and arguments that others address to us. In other words, reason helps humans better exploit their uniquely rich social environment. This interactionist interpretation explains why reason may have evolved and how it fits with other cognitive mechanisms. It makes sense of strengths and weaknesses that have long puzzled philosophers and psychologists--why reason is biased in favor of what we already believe, why it may lead to terrible ideas and yet is indispensable to spreading good ones.--. (shrink)

Dan Zahavi presents a rich new study of the philosophy of Edmund Husserl, the founder of phenomenology. What kind of philosophical project was Husserl engaged in? What is ultimately at stake in so-called phenomenological analyses? In this volume Zahavi makes it clear why Husserl had such a decisive influence on 20th-century philosophy.

We examine the sequences A that are low for dimension, i.e. those for which the effective dimension relative to A is the same as the unrelativized effective dimension. Lowness for dimension is a weakening of lowness for randomness, a central notion in effective randomness. By considering analogues of characterizations of lowness for randomness, we show that lowness for dimension can be characterized in several ways. It is equivalent to lowishness for randomness, namely, that every Martin-Löf random sequence has effective dimension (...) 1 relative to A, and lowishness for K, namely, that the limit of KA/K is 1. We show that there is a perfect [Formula: see text]-class of low for dimension sequences. Since there are only countably many low for random sequences, many more sequences are low for dimension. Finally, we prove that every low for dimension is jump-traceable in order nε, for any ε > 0. (shrink)

LetEbe a computably enumerable equivalence relation on the setωof natural numbers. We say that the quotient set$\omega /E$realizesa linearly ordered set${\cal L}$if there exists a c.e. relation ⊴ respectingEsuch that the induced structure is isomorphic to${\cal L}$. Thus, one can consider the class of all linearly ordered sets that are realized by$\omega /E$; formally,${\cal K}\left = \left\{ {{\cal L}\,|\,{\rm{the}}\,{\rm{order}}\, - \,{\rm{type}}\,{\cal L}\,{\rm{is}}\,{\rm{realized}}\,{\rm{by}}\,E} \right\}$. In this paper we study the relationship between computability-theoretic properties ofEand algebraic properties of linearly ordered sets realized (...) byE. One can also define the following pre-order$ \le _{lo} $on the class of all c.e. equivalence relations:$E_1 \le _{lo} E_2 $if every linear order realized byE1is also realized byE2. Following the tradition of computability theory, thelo-degrees are the classes of equivalence relations induced by the pre-order$ \le _{lo} $. We study the partially ordered set oflo-degrees. For instance, we construct various chains and anti-chains and show the existence of a maximal element among thelo-degrees. (shrink)

The alleged for-me-ness or mineness of conscious experience has been the topic of considerable debate in recent phenomenology and philosophy of mind. By considering a series of objections to the notion of for-me-ness, or to a properly robust construal of it, this paper attempts to clarify to what the notion is committed and to what it is not committed. This exercise results in the emergence of a relatively determinate and textured portrayal of for-me-ness as the authors conceive of it.

Essays on the ethics of monuments tend to focus on their morality in relation to domestic populations. In this article we turn our attention to how the principles we favor for the ‘ingroup’ apply to various ‘outgroups’, including foreigners and foreign governments, guest workers, visiting scholars, forcibly annexed or colonized peoples, and migrant communities. It argues that nations have a prima facie moral right to erect and maintain monuments offensive to foreigners and foreign governments or (in the case of institutions) (...) rivals. Furthermore, we hold that whereas prospective immigrants have little standing to advocate for the removal of monuments they find offensive in their receiving countries, those who have been forcibly annexed have a much greater claim to inoffensive memorialization, contingent on their willingness to be countrymen with the descendants of their former oppressors and principles of reasonably charitable interpretation. Lastly, the article advocates for the protection of heritage landscapes from foreign influence and highlights the responsibilities of migrant populations to avoid memorializing their old grievances in ways that undermine the interests of their adopted nations. (shrink)

Phenomenology: The Basics is a concise and engaging introduction to one of the dominant philosophical movements of the 20th century. This lively and lucid book provides an introduction to the essential phenomenological concepts that are crucial for understanding great thinkers such as Husserl, Heidegger, and Merleau-Ponty. Written by a leading expert in the field, Dan Zahavi examines and explains key questions such as: - What is a phenomenological analysis? - What are the methodological foundations of phenomenology? - What does phenomenology (...) have to say about embodiment and intersubjectivity? - How is phenomenology distinguished from, and related to, other fields in philosophy? - How do ideas from classic phenomenology relate to ongoing debates in psychology and qualitative research? With a glossary of key terms and suggestions for further reading, the book considers key philosophical arguments around phenomenology, making this an ideal starting point for anyone seeking a concise and accessible introduction to the rich and complex study of phenomenology. (shrink)

The question of whether a proper phenomenological investigation and analysis requires one to perform the epoché and the reduction has not only been discussed within phenomenological philosophy. It is also very much a question that has been hotly debated within qualitative research. Amedeo Giorgi, in particular, has insisted that no scientific research can claim phenomenological status unless it is supported by some use of the epoché and reduction. Giorgi partially bases this claim on ideas found in Husserl’s writings on phenomenological (...) psychology. In the present paper, I discuss Husserl’s ideas and argue that while the epoché and the reduction are crucial for transcendental phenomenology, it is much more questionable whether they are also relevant for a non-philosophical application of phenomenology. (shrink)