One of the strongest defences of free speech holds that autonomy requires the protection of speech. In this paper I examine five conditions that autonomy must satisfy. I survey recent research in social psychology regarding automatic behaviour, and a challenge to autonomy is articulated. I argue that a plausible strategy for neutralising some of the autonomy-threatening automatic responses consists in avoiding the exposure to the environmental features that trigger them. If this is so, we can good autonomy-based pro tanto reasons (...) for controlling exposure to certain forms of speech. (shrink)

In this article I argue that anti-perfectionist liberals can accept nudging in certain areas: in particular, they can accept nudges aimed at helping people to discharge their nonenforceable duties, and to secure personal autonomy. I claim that nudging is not disrespectful since it does not involve a comparative negative judgment on people’s ability to pursue their plans, and that the judgments that motivate nudging are compatible with treating citizens as free and equal. I also claim that despite being sometimes manipulative, (...) nudging is easy to resist and so it can be employed to pursue legitimate goals. (shrink)

Disagreement in politics is ubiquitous. People disagree about what makes a life worthy or well-lived. They disagree about what they owe to each other in terms of justice. They also disagree about the proper manner of dealing with the consequences of disagreement. What is more, they disagree about the normative significance of moral and political disagreement. Disagreement has been, for at least three decades now, the focus of a series of major works in political philosophy. It has been called one (...) of the fundamental ‘circumstances of politics’ by Waldron. Rawls took disagreement to be at the heart of the problem of political legitimacy. Gerald Gaus takes it to be the most important task of liberal political theory to justify political institutions in the face of ‘evaluative diversity’. For Thomas Christiano, disagreement is part of the basis of the authority of democracy.Political institutions make decisions and rules that are binding f. (shrink)

This paper defends the claim that private associations might be legitimately constrained by a requirement of reasonableness. I present a list of goods that freedom of association protect, and argue that the limits to associational freedom have to be sensitive to the nature of these goods. In defending this claim, I cast doubt on two popular liberal arguments: One is that attitudes cultivated in the private sphere are not likely to spill over into the public arena. The other is that (...) governmental intervention into the inner life of private associations will jeopardise attaining some associational goods. I challenge these assertions in two ways: First, I argue that the value of associations cannot be measured only in terms of the effects it has on their members. We should also pay attention to the long-term effects on society. Second, I argue that imposing some constraints on the sorts of activities associations might pursue does not necessarily threaten any associational good. These challenges are backed up by research coming from social psychology that suggests that an important part of human behaviour is automatic. I focus on the automaticity of social stereotypes and their causal effectiveness in producing behaviour. The upshot of the argument is that spillover effects are likely to happen. I argue that this is problematic for liberalism because citizens have an interest in exercising a sense of justice. The fact that racist or sexist attitudes cultivated in private spills over the public sphere provides weighty reasons to intervene in those associations. (shrink)

This volume reflects on questions of human rights in the context of globalization. The essays responding to this subject are rich and varied: they focus on legal acceptance as well as consequences of human rights with regard to social rights and the necessary protection of the environment connected or close to those rights. Another approach to the subject featured in the volume is the legal recognition and the consideration of human rights as moral rights. With concepts on universality, a new (...) cosmopolitism, cultural pluralism and perspectives on religious variants and technological advances the debate on human rights is concluded. Index / Indice I. The Foundation of Rights / El fundamento de los derechos: J. Rubio Carracedo: El legalismo occidental: un problema para la universalizacion de los derechos humanos J. A. Seoane: El caracter juridico de las leyes injustas M. Borowski: Classifying and qualifying properties of fundamental rights J. von Platz: Faith in reason: questioning practical reason as fact, norm, end, and function of human rights R. Cruft: Policy implications of the philosophical foundations of human rights Maria Gabriela Scataglini: Derechos humanos: otra mirada sobre la cuestion de su universalidad II. A New Cosmopolitism / Un nuevo cosmopolitismo: V. de P. Barreto: Derecho cosmopolita y derechos humanos Luis Fernando Barzotto: Reconocimiento y fraternidad A. R. Bernstein: Justifying universal human rights via Rawlsian public reason H. Khatchadourian: Democracy and the globalization of human rights Milagros Otero Parga: Derechos humanos y globalizacion Halim Bepari: Human rights and the United Nations Miracy B. S. Gustin: Rescate de los derechos humanos en situaciones adversas de paises perifericos III. Multiculturism and Pluralism of Values /Multiculturalidad y pluralismo de valores: M. Herrero / M. Saralegui: Dogmatismo politico y pluralismo religioso Berry Tholen: Migration, justice, and Europe's identity. The relevance of special ties for EU's migration policy C. M. Alvarez Chicano: Implicaciones de la inconmensurabilidad de los valores en la aplicacion de principios de orden etico y juridico L. Perez Conejo: Axiologia juridica y pluralismo de valores: algunas consideraciones sobre la nocion de 'inconmensurabilidad' S-I. Liu: Fundamental legal values and globalization with regard to historical experience in freedom of speech L. C. Amezua: Libertad natural y esclavitud voluntaria: reflexiones de F. Suarez sobre la esclavitud IV. Rights and Gender / Derechos y genero: J.M. Gil Ruiz: La violencia de genero en el contexto familiar y la agresion de la ciencia juridica A. Goiriena Lekue: El interes superior del/la nino/a, coparentalidad y neutralidad de genero en la atribucion de la guarda y custodia de los hijos e hijas P. Garcia Guevara: Las politicas de genero en los paises globalizados del 'Tercer Mundo' V. Technological Impact and New Generation Rights / Impacto tecnologico y nuevas generaciones de derechos: M. Ahteensuu: Understanding the precautionary principle in the light of the traditional weak-strong distinction: a critical comment Cristina Monero Atienza: Bases para una teoria de los derechos en el siglo XXI M. Kitahara: Personal data processing and business ethics: personal data processing and personal data protection in business A. D. Oliver Lalana: El lado empirico de la legitimidad comunicativa: sobre la publicidad organizativa del derecho de proteccion de datos en internet J. Ebbesson / M. Zamboni: Transbordering democracy? The case of environment protection Sagrario Moles Nieto: El impacto medioambiental de los cultivos transgenicos VI. Bioethics and Law / Bioetica y derecho: M. Cruz Diaz de Teran: Principios para una biojuridica global C. Faralli / S. Tugnoli: Bioethics between law and science: the Italian law on medically assisted procreation (Law No. 40, February 19, 2004) N. Zeegers: The working of power in communicative regulation: the case of research with human embryos J. A. Fernandez Suarez: La bioetica en la era de la globalizacion F. J. Blazqez Ruiz: Privacidad y discriminacion genetica: propuestas bioeticas y juridicas ante los desafios de un mundo globalizado. (shrink)

Highlights of a difficult history -- The preliminary identification of our topic -- Approaches -- Bradley's protest -- James's disjunctive theory -- The source of Bradley's dissatisfaction -- Behaviourism and after -- Heirs of Bradley in the twentieth century -- The underlying metaphysical issue -- Explanatory tactics -- The basic distinction -- Metaphysical categories and taxonomies -- Adverbialism, multiple realizability, and natural kinds -- Adverbialism and levels of explanation -- Taxonomies and supervenience relations -- Rejecting the process : first view (...) -- Supervenience-failure -- The modal commitments of the process : first view -- The interference argument : a putative problem for adverbialist accounts -- Cognitive unison -- The problem with attitude based adverbialism -- Gilbert Ryle and Alan White -- White's argument against disposition-based adverbialism -- The cognitive unison theory -- Tasks -- Cognitive processes -- Potential service of a task -- Superordinate tasks -- Some features of the theory -- Divided attention -- Degrees of attention and merely partial attention -- The causal life of attention -- Mental causation -- How to respond to mental causation objections -- The causal role of attention -- Attention as an enabling condition -- Counterfactuals -- The causal relevance of attention per se -- Counterfactuals and causally relevant properties -- Objections to counterfactual analysis of causation and of causal relevance -- The extrinsicness of unison -- The privative character of unison and the problem of absence causation -- Causal exclusion -- Consequences for cognitive psychology -- Psychology and metaphysics -- The metaphysical commitments of the process-identifying project -- The diverse explanatory construals of current psychological results -- Reasons for deflation -- Inductively unreliable properties -- Questions without answers -- The positive payoff -- Philosophical work for the theory of attention -- Putting attention to philosophical work -- Attention and reference -- Attention and consciousness -- Prospects for optimism. (shrink)

Current work in language models (LMs) helps us speed up or even skip thinking by accelerating and automating cognitive work. But can LMs help us with critical thinking -- thinking in deeper, more reflective ways which challenge assumptions, clarify ideas, and engineer new concepts? We treat philosophy as a case study in critical thinking, and interview 21 professional philosophers about how they engage in critical thinking and on their experiences with LMs. We find that philosophers do not find LMs to (...) be useful because they lack a sense of selfhood (memory, beliefs, consistency) and initiative (curiosity, proactivity). We propose the selfhood-initiative model for critical thinking tools to characterize this gap. Using the model, we formulate three roles LMs could play as critical thinking tools: the Interlocutor, the Monitor, and the Respondent. We hope that our work inspires LM researchers to further develop LMs as critical thinking tools and philosophers and other 'critical thinkers' to imagine intellectually substantive uses of LMs. (shrink)

This reconsideration of Hume’s classic essay “Of Miracles” via the lens of American pragmatist ways of thinking about history and power shifts our attention from Hume’s epistemic concerns about the legitimacy of witnesses and testimony to his distaste for sacred history, his critical stance regarding the social force of revelation, and his disdain for religious authority. To view Hume’s essay both as an articulation of a critical philosophy of history and as an exercise in moral dynamism (social power or, authority, (...) is a result of epistemic transactions), is to intervene in both Hume studies and Contemporary Pragmatism. (shrink)

Under the lig ht of Being and Nothingness’s the o re t ical body – Sartre’s master piece –, it is intended to discuss the essential source of human reality as “n i h i l a t i o n” and ontological lack, as well as manifestations and cons e q u e nces from this primordial human passion to be transformed to coagulated transcendence, to be transformed in Being In-itself-For-itself: to be consciousness and, at the same t i (...) me, to be a complete and finished Being, with infinite de nsity and witho u t fissures. (shrink)

An examination of David Hume's philosophy of religion that situates his conception "true religion" within the context of his overall science of human nature, his rejection of popular religion, and his Ciceronian influence"--Provided by publisher.

Background: Although inclusive education is widely discussed, its implementation has not, arguably, been far-reaching. There remains a lack of specific, targeted approaches towards fully including learners with physical and mental impairments in the educational space. Objectives: This study investigated the extent of the inclusion of learners with autism spectrum disorder (ASD) in three schools in Johannesburg. Method: A qualitative interpretivist design was adopted. Teachers who work with learners with ASD were interviewed using open-ended questions. The sampled data were analysed using (...) thematic analysis, making use of both a priori codes and emergent codes that arose from the open-ended questions. Results: The findings reveal numerous pedagogic strategies such as differentiation, scaffolding, use of visual cues, group work and collaboration that can include learners with ASD in the classroom space. Conclusion: Teacher collaboration and teacher training are vital in ensuring that learners with ASD are fully included in the classroom space. (shrink)

Drawing on recent findings, this study examines whether valence concordant electromyography (EMG) responses can be explained as an unconditional effect of mere stimulus processing or as somatosensory simulation driven by task-dependent processing strategies. While facial EMG over the Corrugator supercilii and the Zygomaticus major was measured, each participant performed two tasks with pictures of album covers. One task was an affective evaluation task and the other was to attribute the album covers to one of five decades. The Embodied Emotion Account (...) predicts that valence concordant EMG is more likely to occur if the task necessitates a somatosensory simulation of the evaluative meaning of stimuli. Results support this prediction with regard to Corrugator supercilii in that valence concordant EMG activity was only present in the affective evaluation task but not in the non-evaluative task. Results for the Zygomaticus major were ambiguous. Our findings are in line with the view that EMG activity is an embodied part of the evaluation process and not a mere physical outcome. (shrink)

Étude sur deux pensées philosophiques de l'existence qui furent influencées par le romantisme au milieu du XIXe siècle. L'auteur s'interroge sur la conception de l'homme que chacun des deux philosophes propose. D'après lui, leurs postulats sont parents par bien des aspects. L'existence est envisagée dans ses dimensions littéraires, philosophiques et religieuses.--Résumé de l'éditeur.

Le rôle de David Hume dans la philosophie moderne, par A. L. Leroy.--The enlightenment of David Hume, by E. C. Mossner.--Hume and Jurieu: possible Calvinist origins of Hume's theory of belief, by R. H. Popkin.--Hume: philosopher or psychologist? A problem of exegesis, by T. E. Jessop.--L'astrazione nella filosofia di Hume, di M. Dal Pra.--Infinite divisibility in Hume's "Treatise," by A. Flew.--Note a "La rgola del gusto," di E. Migliorini.--Kant, Hamann-Jacobi and Schelling on Hume, by P. Merlan.--Bibliografia humiana dal 1937 al (...) 1966, di E. Ronchetti. (shrink)

Social constructionists maintain that we invent the properties of the world rather than discover them. Is reality constructed by our own activity? Do we collectively invent the world rather than discover it? André Kukla presents a comprehensive discussion of the philosophical issues that arise out of this debate, analysing the various strengths and weaknesses of a range of constructivist arguments and arguing that current philosophical objections to constructivism are inconclusive. However, Kukla offers and develops new objections to constructivism, distinguishing between (...) the social causes of scientific beliefs and the view that all ascertainable facts are constructed. (shrink)

David Milner and Melvyn Goodale, and the many psychologists and philosophers who have been influenced by their work, claim that ‘the visual system that gives us our visual experience of the world is not the same system that guides our movements in the world’. The arguments that have been offered for this surprising claim place considerable weight on two sources of evidence — visual form agnosia and the reaching behaviour of normal subjects when picking up objects that induce visual illusions. (...) The present article shows that, if we are careful to consider the possibility that a demonstrative gesture can contribute content to a conscious experience, then neither source of evidence is compelling. (shrink)

Scientific realists have argued that the truth(likeness) of our theories provides the only explanation for the success of science. I consider alternative explanations proposed by antirealists. I endorse Leplin's contention that neither van Fraassen's Darwinist explanation nor Laudan's methodological explanation provides the sort of explanatory alternative which is called for in this debate. Fine's suggestion--that the empirical adequacy of our theories already explains their success--is more promising for antirealists. Leplin claims that this putative explanation collapses into realism on one reading (...) and into vacuity on another reading. But his analysis conflates three doctrines into two, and one of the three avoids both realism and vacuity. (shrink)

Over the past fifteen years there has been a considerable amount of debate concerning what theoretical population dynamic models tell us about the nature of natural selection and drift. On the causal interpretation, these models describe the causes of population change. On the statistical interpretation, the models of population dynamics models specify statistical parameters that explain, predict, and quantify changes in population structure, without identifying the causes of those changes. Selection and drift are part of a statistical description of population (...) change; they are not discrete, apportionable causes. Our objective here is to provide a definitive statement of the statistical position, so as to allay some confusions in the current literature. We outline four commitments that are central to statisticalism. They are: 1. Natural Selection is a higher order effect; 2. Trait fitness is primitive; 3. Modern Synthesis (MS)-models are substrate neutral; 4. MS-selection and drift are model-relative. (shrink)

It has recently become popular to suggest that cognition can be explained as a process of Bayesian prediction error minimization. Some advocates of this view propose that attention should be understood as the optimization of expected precisions in the prediction-error signal (Clark, 2013, 2016; Feldman & Friston, 2010; Hohwy, 2012, 2013). This proposal successfully accounts for several attention-related phenomena. We claim that it cannot account for all of them, since there are certain forms of voluntary attention that it cannot accommodate. (...) We therefore suggest that, although the theory of Bayesian prediction error minimization introduces some powerful tools for the explanation of mental phenomena, its advocates have been wrong to claim that Bayesian prediction error minimization is ‘all the brain ever does’. (shrink)

A response to Christof Koch and Naotsugu Tsuchiya's 'Attention and Consciousness: Two Distinct Brain Processes'.

According to commonsense psychology, one is conscious of everything that one pays attention to, but one does not pay attention to all the things that one is conscious of. Recent lines of research purport to show that commonsense is mistaken on both of these points: Mack and Rock (1998) tell us that attention is necessary for consciousness, while Kentridge and Heywood (2001) claim that consciousness is not necessary for attention. If these lines of research were successful they would have important (...) implications regarding the prospects of using attention research to inform us about consciousness. The present essay shows that these lines of research are not successful, and that the commonsense picture of the relationship between attention and consciousness can be. (shrink)

According to an externalist theory of content the content of an individual’s thoughts and the meaning of her words need not supervene on her intrinsic history. Two individuals may be intrinsically exactly alike yet entertain different thoughts, and attach different meanings to the words they use. ETC, which has been most notably defended by Saul Kripke, Hilary Putnam and Tyler Burge, has attained the status of current orthodoxy. Nevertheless, some maintain that combining ETC with the premisses that we have privileged (...) access to our intentional states yields a surprising conclusion. It yields the conclusion that we can have a priori knowledge of features of the external world that seem only accessible to empirical investigation. Call the argument from ETC and privileged access to this conclusion the main argument. Some take the main argument to be a reductio of ETC. Since we have privileged access to our intentional states, and lack the a priori knowledge attributed by the main argument, ETC is false. Some take the main argument to refute the premisses that we have privileged access to those intentional states falling within the scope of ETC. Others see the main argument as a refutation of external world scepticism. We will show that the main argument does not support any of these interesting conclusions. We will show that the main argument does not threaten to restrict privileged access, refute external world scepticism, or constitute a reductio of ETC. More exactly, we will show that the most defensible version of ETC, even when combined with the premiss that we have unrestricted privileged access to our intentional states, yields no a priori knowledge of the external world. (shrink)

Attention has been studied in cognitive psychology for more than half a century, but until recently it was largely neglected in philosophy. Now, however, attention has been recognized by philosophers of mind as having an important role to play in our theories of consciousness and of cognition. At the same time, several recent developments in psychology have led psychologists to foundational questions about the nature of attention and its implementation in the brain. As a result there has been a convergence (...) of interest in fundamental questions about attention. This volume presents the latest thinking from the philosophers and psychologists who are working at the interface between these two disciplines. Its fourteen chapters contain detailed philosophical and scientific arguments about the nature and mechanisms of attention; the relationship between attention and consciousness; the role of attention in explaining reference, rational thought, and the control of action; the fundamental metaphysical status of attention, and the details of its implementation in the brain. These contributions combine ideas from phenomenology, neuroscience, cognitive psychology, and philosophy of mind to further our understanding of this centrally important mental phenomenon, and to bring to light the foundational questions that any satisfactory theory of attention will need to address. (from OUP website). (shrink)

The central point of this essay is to demonstrate the incommensurability of ‘Darwinian fitness’ with the numeric values associated with reproductive rates used in population genetics. While sometimes both are called ‘fitness’, they are distinct concepts coming from distinct explanatory schemes. Further, we try to outline a possible answer to the following question: from the natural properties of organisms and a knowledge of their environment, can we construct an algorithm for a particular kind of organismic life-history pattern that itself will (...) allow us to predict whether a type in the population will increase or decrease relative to other types? 1. Introduction2. Darwinian fitness3. Reproductive fitness and genetical models of evolution4. The models of reproductive fitness4.1 The Standard Viability Model4.2 Frequency-dependent selection4.3 Fertility models4.4 Overlapping generations5. Fitness as outcome5.1 Fitness as actual increase in type5.2 Fitness as expected increase in type5.2.1 Expected increase within a generation5.2.2 Expected increase between generations5.2.3 Postponed reproductive fitness effects6. The book-keeping problem7. Conclusion. (shrink)

This chapter focuses on evidence from functional magnetic resonance imaging data, and discusses the application of neuroimaging techniques to various fields, including cognitive sciences. It considers the role of neuroimaging data in providing informative evidence regarding hypotheses in cognitive science, and explains differences in data, high-level null hypotheses, and ways to accommodate null hypotheses. Finally, the chapter looks into the scope of neuroimaging data in the cognitive sciences.

It often seems incorrect to say that psychiatric conditions are diseases, and equally incorrect to say that they are not. This results in what would seem to be an unsatisfactory stalemate. The present essay examines the considerations that have brought us to such a stalemate in our discussions of autism. It argues that the stalemate in this particular case is a reflection of the fact that we need to find the logical space for a position that rejects both positive and (...) negative answers. It then suggests one way in which we might find such space, by applying Michael Dummett’s notion of semantic disharmony. (shrink)

Annotation: This is a comprehensive and psychological history of art from a variety of cultures by one of the eminent thinkers of the twentieth century.

This article argues against the non-cognitivist theory of vision that has been formulated in the work of Nico Orlandi. It shows that, if we understand ‘representation’ in the way Orlandi recommends, then the visual system’s response to abstract regularities must involve the formation of representations. Recent experiments show that those representations must be used by the visual system in the production of visual experiences. Their effects cannot be explained by taking them to be non-visual effects involving attention or memory. This (...) contradicts Orlandi’s version of the non-cognitivist hypothesis, but does so while vindicating her methodological position. (shrink)

This article presents theories of attention that attempt to derive their answer to the question of what attention is from their answers to the question of what it is for some activity to be done attentively. Such theories provide a distinctive account of the difficulties that are faced by the attempt to locate processes in the brain by which the phenomena of attention can be explained. Their account does not share the pessimism of theories suggesting that the concept of attention (...) is defective. Instead it reconstrues the explanatory relationship between attention and the processes that constitute it, in a way that is illustrated here by considering the relationship between attention and the processes that are identified by the biased competition theory. After considering some of the ways in which an adverbialist approach might be developed, the article concludes by suggesting some possible solutions to a problem concerning distraction, by which prominent adverbialist theories of attention have been dogged. (shrink)

The aim of this paper is to elucidate the question of whether Newtonian mechanics can be derived from relativity theory. Physicists agree that classical mechanics constitutes a limiting case of relativity theory. By contrast, philosophers of science like Kuhn and Feyerabend affirm that classical mechanics cannot be deduced from relativity theory because of the incommensurability between both theories; thus what we obtain when we take the limit c → ∞ in relativistic mechanics cannot be Newtonian mechanics sensu stricto. In this (...) paper I focus on the alleged change of reference of the term mass in the transition from one theory to the other. Contradicting Kuhn and Feyerabend, special relativity theory supports the view that the mass of an object is a characteristic property of the object, that it has the same value in whatever frame of reference it is measured, and that it does not depend on whether the object is in motion or at rest. Thus mass preserves the reference through the change of theory, and the existence of a Newtonian limit of relativity theory provides a good example of the rationality of theory change in mathematical physics. (shrink)

Although Wayne Wu correctly identifies a flaw in the way in which my 2009 article frames the debate about ‘zombie action’, he fails in his attempts to strengthen the case for thinking that our actions are under less conscious control than we usually imagine. His argument, like the arguments that my earlier paper addressed, can be blocked by allowing that an embodied demonstrative concept can contribute contents to a visual experience.

Le génie de Léonard de Vinci, celui de Michel-Ange ressortent mieux sur le fond révélateur de l’Académie de Careggi, où Marsile Ficin règne en maître, évoquant sinon invoquant Platon. La culture platonicienne entretenue par Ficin - mais Cristoforo Landino ou Ange Politien sont tour à tour convoqués - délimite le contour d’un nouvel ordre artistique dont André Chastel, dans un travail de jeunesse qui engage déjà ses subtiles analyses d’histoire de l’art et des idées, rend raison avec passion. En quelques (...) pages lumineuses, Jean Wirth donne à ce maître livre sa juste place dans une tradition historiographique qu’il a contribué à renouveler. (shrink)

Occasions of Identity is an exploration of timeless philosophical issues about persistence, change, time, and sameness. Andre Gallois offers a critical survey of various rival views about the nature of identity and change, and puts forward his own original theory. He supports the idea of occasional identities, arguing that it is coherent and helpful to suppose that things can be identical at one time but distinct at another. Gallois defends this view, demonstrating how it can solve puzzles about persistence dating (...) back to the Ancient Greeks, and investigates the metaphysical consequences of rejecting the necessity and eternity of identities. (shrink)

§1. Introduction. Natural sets that can be enumerated by a computable function always seem to be either actually computable or of the same complexity as the Halting Problem, the complete r.e. set K. The obvious question, first posed in Post [1944] and since then called Post's Problem is then just whether there are r.e. sets which are neither computable nor complete, i.e., neither recursive nor of the same Turing degree as K?Let be the r.e. degrees, i.e., the r.e. sets modulo (...) the equivalence relation of equicomputable with the partial order induced by Turing computability. This structure is a partial order with least element 0, the degree of the computable sets, and greatest element 1 or 0′, the degree of K. Post's problem then asks if there are any other elements of.The solution of Post's problem by Friedberg [1957] and Muchnik [1956] was followed by various algebraic or order theoretic results that were interpreted as saying that the structure was in some way well behaved:Theorem 1.1. Every countable partial ordering or even uppersemilattice can be embedded into.Theorem 1.2. For every nonrecursive r.e. degreeathere are r.e. degreesb, c < asuch thatb ∨ c = a.Theorem 1.3. For every pair of nonrecursive r.e. degreesa < bthere is an r.e. degreecsuch thata < c < b. (shrink)