We propose a way to achieve across-population sharing within the authors' model in a way that is plausibly in accordance with human evolution, and also a simple way to capture ecological structure. Finally, we briefly reflect on the model's scope and limits in modeling linguistic communication.

The uniform halting problem (UH) can be stated as follows.Give a decision procedure which for any given Turing machine (TM) will decide whether or not it has an immortal instantaneous description (ID).An ID is called immortal if it has no terminal successor. As it is generally the case in the literature (see e.g. Minsky [3, p. 118]) we assume that in an ID the tape must be blank except for some finite numbers of squares. If we remove this restriction the (...) UH becomes the immortality problem (IP). The UH should not be confused with the initialised uniform halting problem (whether or not a TM has an immortal ID when started in a specified state) which can easily be shown to be undecidable (see e.g. Minsky [3, p. 151]). (shrink)

The uniform halting problem (UH) can be stated as follows:Give a decision procedure which for any given Turing machine (TM) will decide whether or not it has an immortal instantaneous description (ID).An ID is called immortal if it has no terminal successor. As it is generally the case in the literature (see e.g. Minsky [4, p. 118]) we assume that in an ID the tape must be blank except for some finite number of squares. If we remove this restriction the (...) UH becomes the immortality problem (IP). (shrink)

Which works and tenets of early modern natural law reached East-Central Europe, and how? How was it received, what influence did it have? And how did theorists and users of natural law in East- Central Europe enrich the pan-European discourse? This volume is pioneering in two ways; it draws the east of the Empire and its borderlands into the study of natural law, and it adds natural law to the practical discourse of this region. Drawing on a large amount of (...) previously neglected printed or handwritten sources, the authors highlight the impact that Grotius, Pufendorf, Heineccius and others exerted on the teaching of politics and moral philosophy as well as on policies regarding public law, codification praxis, or religious toleration. Contributors are: Péter Balázs, Ivo Cerman, Karin Friedrich, Gábor Gángó, Anna Grześkowiak-Krwawicz, Knud Haakonssen, Steffen Huber, Borbála Lovas, Martin P. Schennach, and József Simon. (shrink)

A partition $\{C_i\}_{i\in I}$ of a Boolean algebra $\cS$ in a probability measure space $(\cS,p)$ is called a Reichenbachian common cause system for the correlated pair $A,B$ of events in $\cS$ if any two elements in the partition behave like a Reichenbachian common cause and its complement, the cardinality of the index set $I$ is called the size of the common cause system. It is shown that given any correlation in $(\cS,p)$, and given any finite size $n>2$, the probability space (...) $(\cS,p)$ can be embedded into a larger probability space in such a manner that the larger space contains a Reichenbachian common cause system of size $n$ for the correlation. It also is shown that every totally ordered subset in the partially ordered set of all partitions of \cS$ contains only one Reichenbachian common cause system. Some open problems concerning Reichenbachian common cause systems are formulated. (shrink)

A partition $\{C_i\}_{i\in I}$ of a Boolean algebra Ω in a probability measure space (Ω, p) is called a Reichenbachian common cause system for the correlation between a pair A,B of events in Ω if any two elements in the partition behave like a Reichenbachian common cause and its complement; the cardinality of the index set I is called the size of the common cause system. It is shown that given any non-strict correlation in (Ω, p), and given any finite (...) natural number n > 2, the probability space (Ω,p) can be embedded into a larger probability space in such a manner that the larger space contains a Reichenbachian common cause system of size n for the correlation. (shrink)

Background Making appropriate end-of-life decisions in the intensive care unit (ICU) requires shared interprofessional decision-making. Thus, a decision-making climate that values the contributions of all team members, addresses diverse opinions and seeks consensus among team members is necessary. Little is known about religion’s influence on ethical decision-making climates. Therefore, this study aimed to examine the association between religious belief and ethical decision-making climates. Methods The study was a cross-sectional analytical observation study as a part of the prospective observational DISPROPRICUS study. (...) A total of 2,275 nurses and 717 physicians from 68 ICUs representing 12 countries in Europe and the US participated. All participants were asked which religion (if any) they belonged to and how important their religion (if any) was for their professional attitude towards end-of-life care. Perceptions of ethical decision-making climates were evaluated using a validated, 35-item self-assessment questionnaire that evaluates seven factors. Using cluster analysis, ICUs were categorised into four ethical decision-making climates: good, average (with nurses’ involvement at the end of life), average (without nurses’ involvement at the end of life) and poor. Results Of the 2,992 participants, 453 (15%) were religious (had religious convictions and found them important or very important for their attitude towards end-of-life care). The remaining 2,539 were non-religious (i.e. had religious convictions but assessed that they were not important for their attitude towards end-of-life care). When adjusting for country and ICU, the overall perception of the four ethical climates was associated with religious beliefs, with non-religious healthcare providers having more positive perceptions of the ethical climates compared to religious healthcare providers (p < 0.01). Within good climates, non-religious healthcare providers rated leadership by physicians (p < 0.01), interdisciplinary reflection (p = 0.049) and active decision-making by physicians (p = 0.02) as more positive compared to religious participants. In poor climates, religious healthcare providers had a more positive perception of the active involvement of nurses (p = 0.01). Within the other climates, no differences were found. Conclusions Overall perceptions of ethical decision-making climates were associated with religious beliefs, with non-religious healthcare providers generally having a more positive perception of the ethical climates than religious healthcare providers. (shrink)

Csepregi, Gabor In Vivo: A Phenomenology of Life-Defining MomentsMontreal: McGill-Queen’s University Press, 216 p.ISBN 978-0773556638.

Books Reviewed in this Article: Introduction to the Critical Study of the Text of the Hebrew Bible. By J. Weingreen. Pp.vii, 103, Oxford, Clarendon Press; New York, Oxford University Press, 1982, £5.50. The Archaeology of the Land of Israel. By Yohanan Aharoni. Pp.xx, 344, Philadelphia, The Westminster Press, 1982, $27.50, $18.95 ; London, SCM Press, 1982, £12.50. A Commentary on the Gospel of Mark. By Terence J. Keegan. Pp.183, New York, Paulist Press, and Leominster, Fowler Wright Books, 1981, £4.45. The (...) Panorama of Luke: An Introduction to the Gospel of Luke and the Acts of the Apostles. By Neil Richardson. Pp.116, London, Epworth Press, 1982, £3.95. The Synoptic Gospels: An Introduction. By Keith F. Nickle. Pp.119, London SCM Press, 1982, £5.50. What is a Gospel? By Nicholas King. Pp.132, Leigh‐on‐Sea, Kevin Mayhew, 1982, £3.00. The Women Around Jesus: Reflections on Authentic Personhood. By Elisabeth Moltmann‐Wendel, translated by J. Bowden. Pp.xii, 148, London, SCM Press, 1982, £3.95. Paul and Paulinism: Essays in honour of C.K. Barrett. Edited by M.D. Hooker and S.G. Wilson. Pp.xxvii, 404, London, SPCK, 1982, £25.00. Divine Revelation and the Limits of Historical Criticism. By William J. Abraham. Pp.222, Oxford, Oxford University Press, 1982, £15.00. The Social Teaching of Vatican II. By Rodger Charles with Drostan Maclaren. Pp.xxvi, 569, San Francisco, Ignatius Press; Oxford, Plater Publications, 1982, £12.75. Option for the Poor: A Hundred Years of Vatican Social Teaching. By Donal Dorr. Pp.viii, 328, New York, Orbis Books; Dublin, Gill & Macmillan, 1983, £7.95. The Kindness that Kills. Edited by Digby Anderson. Pp.xii, 170, London SPCK, 1984, £3.95. Communism in the Bible. By José Porfiro Miranda. Pp.x, 86, London, SCM Press Ltd. 1982, £3.50. Why I am still a Catholic. Edited by Robert Nowell. Pp.157, London, Collins, 1982, £4.95. Does God Answer Prayer? By Peter Baelz. Pp.55, London, Darton, Longman and Todd, 1982, £1.95. A Cry for Mercy. By Henri J.M. Nouwen. Pp.175, Dublin, Gill and Macmillan, 1982, £3.50. The Living Reminder. By Henri J.M. Nouwen. Pp.80, Dublin, Gill and Macmillan, 1982, £2.95. Making All Things New. By Henri J.M. Nouwen. Pp.95, Dublin, Gill and Macmillan, 1982. £2.95. Picturing God. By Norman Pittenger. Pp.x, 147, London, SCM Press, 1982, £4.50. Christotherapy II, The Fasting and Feasting Heart. By Bernard J. Tyrrell. Pp.xiii, 337, New York, Paulist Press, 1982, £6.70. With Respect: A Doctor's Response to a Healing Pope. By Frank Lake. Pp.xxiii, 327, London, Darton, Longman and Todd, 1982, £6.95. Euthanasia and Clinical Practice: Trends, Principles and Alternatives: The Report of a Working Party. Pp.viii, 88, London, The Linacre Centre, 1982, £2.75. Essays in Religion and Morality. By William James. Pp.xxviii, 345, Cambridge, Harvard University Press, 1982, £17.50. Freud and Jung: Conflicts of Interpretation. By Robert Steele. Pp.vii, 390, London, Routledge and Kegan Paul, 1982, £14.95. Archetype: A Natural History of the Self. By Anthony Stevens. Pp.xi, 324, London, Routledge and Kegan Paul, 1982, £12.50. The Seeing Eye: Hermeneutical Phenomenology in the Study of Religion. By Walter L. Brenneman Jr. and Stanley O. Yarian, in association with Alan M. Olson. Pp.xii, 177, University Park and London, The Pennsylvania State University Press, 1982, £8.10. Contemporary Philosophy of Religion. Edited by S.M. Cahn and D. Schatz. Pp.x, 310, Oxford University Press, 1982, £6.95. Beyond Empiricism: Philosophy of Science in Sociology. By Andrew Tudor. Pp.xii, 213, London, Routledge & Kegan Paul, 1982, £4.95. Philosophy and Human Geography: An Introduction to Contemporary Approaches. By R.J. Johnston. Pp.viii, 152, London, Edward Arnold, 1982, £5.50. The Literate Revolution in Greece and its Cultural Consequences. By Eric A. Havelock. pp.viii, 362, Princeton, Princeton University Press, 1982, £17.70, £6.30. The Philosophy of Robert Grosseteste. By James McEvoy. Pp.xviii, 560, Oxford, Clarendon Press, 1982, £35.00. Kant's Life and Thought. By Ernst Cassirer, translated by James Haden, introduction by Stephan Körner. Pp.xxiii, 429, New Haven, Yale University Press, 1981, £17.50. Kant's Theory of Form: An Essay on the Critique of Pure Reason. By Robert B. Pippin. Pp.xii, 247, New Haven and London, Yale University Press, 1982, £16.50. The Basic Problems of Phenomenology. By Martin Heidegger, translated by Albert Hofstadter. Pp.xxxi, 396, Bloomington, Indiana, Indiana University Press, 1982, £16.50. In the Active Voice By Mary Douglas. Pp.xi, 306, London, Routledge and Kegan Paul, 1982, £9.75. Structural Sociology. Edited by Ino Rossi. Pp.xiv, 363, New York, Columbia University Presss, 1982, £45.50. A Vanquished Hope: The Movement for Church Renewal in Russia, 1905–1906. By J.W. Cunningham. Pp.384, Crestwood, St Vladimir's Seminary Press, 1981, £7.95. Christians in Ulster 1968–1980. By Eric Gallagher and Stanley Worrall. P.241, Oxford University Press, 1982, £10.00. Scotland and the Papacy. By John Cooney. Pp.126, Edinburgh, Paul Harris, 1982, £8.95, £4.95. Scotia Pontificia. Edited by Robert Somerville. Pp.xiii, 177, Oxford, Clarendon Press: Oxford University Press, 1982, £25.00. (shrink)

PHILOSOPHY has always made use of its past. In doing so, it resembles literature more than it does the natural sciences, which generally regard the scientific concepts and systems of history as superseded, useless hulks drifting in the wake of empirical and conceptual progress. Literature, on the contrary, cherishes the monumental achievements of previous ages; they retain value and importance, and can be turned to for interest and for inspiration again and again. Philosophy has sometimes claimed to take a radical (...) turn which leaves the past behind, but in the long run the past returns to assert itself as living and useful. There are fashions in philosophy, of course, but it is never safe to regard any major philosophic system or approach as forever refuted and surpassed. As witness, we see how the current analytic movement is rediscovering pragmatism, once thought hopelessly old hat. (shrink)

One cannot blame all this on the dead hand of, say, the Aristotelian conception of First Philosophy, although that and other classic positions have played their part. It can hardly be held that those who doctrinally profess allegiance to the conception of philosophy as created in the image of science have helped much more than they have hindered. Accepting the older, orthodox account of the course of previous philosophic thinking as detached from science, they have been happier demonstrating their predecessors' (...) vulnerability than in reshaping that account fruitfully. There is a vacuity about the pronouncements of men so eminent-and diverse--as Bertrand Russell and John Dewey, which renders their extensive influence unfortunate in many respects. (shrink)

“Here is the first Kant-biography in English since Paulsen’s and Cassirer’s only full-scale study of Kant’s philosophy. On a very deep level, all of Cassirer’s philosophy was based on Kant’s, and accordingly this book is Cassirer’s explicit coming to terms with his own historical origins. It sensitively integrates interesting facts about Kant’s life with an appreciation and critique of his works. Its value is enhanced by Stephen Körner’s Introduction, which places Cassirer’s Kant-interpretation in its historical and contemporary context.”—Lewis White Beck (...) “The first English translation of a 60-year-old classic intellectual biography. Those readers who know Kant only through the first _Critique_ will find their understanding of that work deepened and illuminated by a long explication of the pre-critical writings, but perhaps the most distinctive contribution is Cassirer’s argument that the later _Critiques_, and especially the _Critique of Judgment_, must be understood not as merely applying the principles of the first to other areas but as subsuming the latter into a larger and more comprehensive framework.”—Frederick J. Crown, _The Key Reporter _“_Kant’s Life and Thought_ is that rare achievement: a lucid and highly readable account of the life and work of one of the world’s profoundest thinkers. Now for the first time available in an admirable English translation, the book introduces the reader to two of the finest minds in the history of philosophy.”—Ashley Montagu. (shrink)

IN HIS ESSAY The Paradox of Socrates," Gregory Vlastos paints a vivid and moving portrait of Socrates, or, as he puts it: "the Platonic Socrates, or, to be more precise, the Socrates of Plato’s early dialogues." That the man who emerges from these early dialogues is something very like the actual Socrates is Vlastos’s opinion. He argues, with great plausibility, that the Xenophontic Socrates is not a man who, on the one hand, could have provoked the Athenians into indicting him (...) and convicting him for subversion of Athenian faith and morals, and on the other could have aroused the devotion of an Alcibiades. The question of the "authentic" Socrates is the kind of question which simply does not admit of any ultimate solution, so there will always be divergent opinions, but regardless of whether or not Plato does portray the real Socrates as he knew him, it is certainly the Platonic Socrates who has exercised the decisive influence down through the centuries. Therefore irrespective of whether one accepts Vlastos’s argument, it is worthwhile examining what Vlastos distills from the dialogues as his "recreation of the thought and character of the man," and testing it for its adequacy. (shrink)

The character of these books should be less unexpected when one notes that their author, A. C. Crombie, is not only lecturer in the Department of History and Philosophy of Science, University College, London, but is also the editor of The British Journal for the Philosophy of Science. One would expect, then, that his approach to the problems of the philosophy of science would naturally proceed through the history of science, and that he would be less interested in elaborating the (...) details of a particular doctrine in the philosophy of science than in viewing the events of the history of science in their larger aspects, aspects which merge insensibly into the phases of the history of philosophy. And just this is the case. (shrink)

The watershed for the latter discipline was the establishment of the Hegelian philosophy, with its thesis that the history of philosophy was philosophy itself. Hegel's lectures on the history of philosophy appeared posthumously but his influence was already confirmed. The first really inclusive history of science which is of more than antiquarian interest, William Whewell's History of the Inductive Sciences, was published almost simultaneously in 1837. For Whewell as well as for Hegel, history and philosophy were connected; Whewell's History was (...) written in close relation to his Philosophy of the Inductive Sciences, which he in one place called the "moral" of the other work. Surveying the astonishing advances of science, especially in the previous century and a half, he expressly aimed to clarify the method responsible for them. Philosophically, he was a curious hybrid between Kant and Francis Bacon, seeing in scientific development the progressive articulation of certain a priori "Ideas." But despite these early and vigorous beginnings, the study of the history of science has generally lagged behind that of its sister study, perhaps because the impetus of scientific expansion and specialization has discouraged scientists from examination of their own intellectual antecedents, and at the same time has debarred non-scientists from sufficient technical understanding to perform the task adequately. The edges of the old wound between the Natur- and the Geisteswissenschaften healed apart rather than together, to the detriment of both. (shrink)

The much-anticipated anthology on Plato’s_Timaeus_—Plato’s singular dialogue on the creation of the universe, the nature of the physical world, and the place of persons in the cosmos—examining all dimensions of one of the most important books in Western Civilization: its philosophy, cosmology, science, and ethics, its literary aspects and reception. Contributions come from leading scholars in their respective fields, including Sir Anthony Leggett, 2003 Nobel Laureate for Physics. Parts of or earlier versions of these papers were first presented at the (...) _Timaeus_ Conference, held at the University of Illinois at Urbana–Champaign in September of 2007._ To this day, Plato’s _Timaeus_ grounds the form of ethical and political thinking called Natural Law—the view that there are norms in nature that provide the patterns for our actions and ground the objectivity of human values. Beyond the intellectual content of the dialogue’s core, its literary frame is also the source of the myth of Atlantis, giving the West the concept of the “lost world.” From Platonic space to Presocratic vortices, from Philosopher-Kings to Craftsman-Gods and from modern physics to the myth of Atlantis, _One Book, The Whole Universe_ presents in one volume the most up-to-date and penetrating scholarship on Plato’s _Timaeus_ by some of the greatest minds alive today. Contributors__ _Ann Bergren Gábor Betegh Sean Carroll Alan Code Zina Giannopoulou Verity Harte Thomas Kjeller Johansen Charles H. Kahn Anthony J. Leggett Anthony A. Long Stephen Menn Richard D. Mohr Kathryn A. Morgan Alexander P.D. Mourelatos Ian Mueller Thomas M. Robinson Barbara M. Sattler Allan Silverman Jon Solomon Anthony Vidler Matthias Vorwerk Donald Zeyl. (shrink)

This is a comprehensive study of the Derveni Papyrus. The papyrus, found in 1962 near Thessaloniki, is not only one of the oldest surviving Greek papyri but is also considered by scholars as a document of primary importance for a better understanding of the religious and philosophical developments in the fifth and fourth centuries BC. Gábor Betegh aims to reconstruct and systematically analyse the different strata of the text and their interrelation by exploring the archaeological context; the interpretation of (...) rituals in the first columns of the text; the Orphic poem commented on by the author of the papyrus; and the cosmological and theological doctrines which emerge from the Derveni author's exegesis of the poem. Betegh discusses the place of the text in the context of late Presocratic philosophy and offers an important preliminary edition of the text of the papyrus with critical apparatus and English translation. (shrink)

Based on the existence of polysemy (e.g., lunch can refer to both food and events), it is argued that central tenets of externalist semantics and Fodorian concept atomism, an externalist theory on which words lack semantic structure, are unsound. We evaluate the premise that these arguments rely on—that polysemous words have separate, finer‐grained senses. We survey the evidence across psychology and linguistics and argue that it shows that polysemy does not exist, at least not in this “sense”. The upshot is (...) that if polysemy does not exist, it cannot pose a problem for atomism or externalism. (shrink)

Concepts are basic features of rationality. Debates surrounding them have been central to the study of philosophy in the medieval and modern periods, as well as in the analytical and Continental traditions. This book studies ancient Greek approaches to the various notions of concept, exploring the early history of conceptual theory and its associated philosophical debates from the end of the archaic age to the end of antiquity. When and how did the notion of concept emerge and evolve, what questions (...) were raised by ancient philosophers in the Greco-Roman tradition about concepts, and what were the theoretical presuppositions that made the emergence of a notion of concept possible? The volume furthers our own contemporary understanding of the nature of concepts, concept formation, and concept use. This title is part of the Flip it Open Programme and may also be available Open Access. Check our website Cambridge Core for details. (shrink)

"In this book, Gabor Csepregi describes in detail the nature and scope of the body's innate abilities and reflects on their significance in human life."--BOOK JACKET.

In this short study, I attempt to reconstruct the main conceptual components of Edmund Husserl’s concept of death following the leading clue of his late transcendental phenomenological methodology. First, I summarise his thoughts on death, from the point of view of “the natural attitude”, as an event in the world. Then, I try and explore the manifold senses of the limit phenomenon of death as a multidimensional transcendental phenomenological problem in all of its intersubjective-world constitutive, personal-primordial, and metaphysical-constructive layers of (...) meanings, respectively. By doing so, I also hope that the path we travel can serve the reader as an opportunity for a personal and reflective confrontation with death. (shrink)

The paper first discusses the metaphysical framework that allows the soul's integration into the physical world. A close examination of B36, supported by the comparative evidence of some other early theories of the soul, suggests that the word psuchê could function as both a mass term and a count noun for Heraclitus. There is a stuff in the world, alongside other physical elements, that manifests mental functions. Humans, and possibly other beings, show mental functions in so far as they have (...) a portion of that stuff. Turning to the physical characterization of the soul, the paper argues that B36 is entirely consistent with the ancient testimonies that say that psuchê for Heraclitus is exhalation. But exhalations cover all states of matter from the lowest moist part of atmospheric air to the fire of celestial bodies. If so, psuchê for Heraclitus is both air and fire. The fact that psuchê can manifest the whole range of physical properties along the dry-wet axis guarantees that souls can show different intellectual and ethical properties as well. Moreover, Sextus Empiricus, supported by some other sources, provides us with an answer how portions of soul stuff are individuated into individual souls. The paper closes with a brief discussion of the question whether, and if so with what qualifications, we can apply the term 'physicalism' to Presocratic theories of the soul. (shrink)

We show that there is a restriction, or modification of the finite-variable fragments of First Order Logic in which a weak form of Craig's Interpolation Theorem holds but a strong form of this theorem does not hold. Translating these results into Algebraic Logic we obtain a finitely axiomatizable subvariety of finite dimensional Representable Cylindric Algebras that has the Strong Amalgamation Property but does not have the Superamalgamation Property. This settles a conjecture of Pigozzi [12].

Continuity as appears to us immediately by intuition differs from its current formalization, the arithmetical continuum or equivalently the set of real numbers used in modern mathematical analysis. Motivated by the known mathematical and physical problems arising from this formalization of the continuum, our aim in this paper is twofold. Firstly, by interpreting Chaitin’s variant of Gödel’s first incompleteness theorem as an inherent uncertainty or fuzziness of the arithmetical continuum, a formal set-theoretic entropy is assigned to the arithmetical continuum. Secondly, (...) by analyzing Noether’s theorem on symmetries and conserved quantities, we argue that whenever the four dimensional space-time continuum containing a single, stationary, asymptotically flat black hole is modeled by the arithmetical continuum in the mathematical formulation of general relativity, the hidden set-theoretic entropy of this latter structure reveals itself as the entropy of the black hole, indicating that this apparently physical quantity might have a pure set-theoretic origin, too. (shrink)

Current philosophical reflections on science have departed from mainstream history of science with respect to both methodology and conclusions. The article investigates how different approaches to reconstructing commitments can explain these differences and facilitate a mutual understanding and communication of these two perspectives on science. Translating the differences into problems pertaining to principles of charity, the paper offers a platform for clarification and resolution of the differences between the two perspectives. The outlined contextual approach occupies a middle ground between mainstream (...) history and sociology of science, bracketing questions of rationality, and individual coherence-maximizing, rationality-centered approaches. It can satisfy those, who believe that science is an epistemically privileged endeavor, and its epistemic content should not be neglected when reconstructing the scientists’ positions. It can also satisfy those who hold that it is naive to believe that the immediate context, e.g. the challenges to a theory, the expectations of the author about his audience, etc., does not affect the position a scientist takes. Its theoretical considerations are exemplified with a close study of the debate following the 1672 publication of Newton's theory of light and colours, also offering a novel reading of the development of his methodological views concerning the demonstrativity of the famous crucial experiment. Although we only show the capacity of the framework to analyze a direct controversy, given that it is hard to think about any scientific text as detached from an argumentative context, this approach has the potential to be a general guide for interpretation. (shrink)

The paper challenges William Alston’s argument against doxastic deontology, the view that we have epistemic duties concerning our beliefs. The core of the argument is that doxastic deontology requires voluntary control over our beliefs, which we do not have. The idea that doxastic deontology requires voluntary control is supposed to follow from the principle that ought implies can. The paper argues that this is wrong: in the OIC principle which regulates our doxastic duties the “can” does not stand for the (...) ability to shape our beliefs voluntarily. As an examination of everyday examples shows, it stands for cognitive competence, the reliable ability to acquire beliefs in compliance with the epistemic norms. The doxastic OIC principle asserts, in brief, that one is only obliged to believe something if one’s cognitive capacities are sufficiently strong. It is also explained why the doxastic duties do not require voluntary control as opposed to moral duties. This understanding of doxastic duties saves our everyday doxastic deontic judgments from Alston’s argument, but does not help the deontological conception of justification, which understands justification as not violating one’s epistemic duties. It actually provides another argument against the deontological conception: if the OIC regulating our doxastic duties is construed as suggested, the deontological conception of justification implies that one’s doxastic duties and, consequently, whether one’s belief is justified depend on one’s cognitive competence. Since cognitive competence varies from person to person, justification will not matter to truth and knowledge in the way epistemic justification is supposed to do. (shrink)

Here we investigate the classes RCA $^\uparrow_\alpha$ of representable directed cylindric algebras of dimension α introduced by Nemeti[12]. RCA $^\uparrow_\alpha$ can be seen in two different ways: first, as an algebraic counterpart of higher order logics and second, as a cylindric algebraic analogue of Quasi-Projective Relation Algebras. We will give a new, "purely cylindric algebraic" proof for the following theorems of Nemeti: (i) RCA $^\uparrow_\alpha$ is a finitely axiomatizable variety whenever α ≥ 3 is finite and (ii) one can obtain (...) a strong representation theorem for RCA $^\uparrow_\alpha$ if one chooses an appropriate (non-well-founded) set theory as foundation of mathematics. These results provide a purely cylindric algebraic solution for the Finitization Problem (in the sense of [11]) in some non-well-founded set theories. (shrink)

In the last 20 years network science has become an independent scientific field. We argue that by building network models network scientists are able to tame the vagueness of propositions about complex systems and networks, that is, to make these propositions precise. This makes it possible to study important vague properties such as modularity, near-decomposability, scale-freeness or being a small world. Using an epistemic model of network science, we systematically analyse the specific nature of network models and the logic behind (...) the taming mechanism. (shrink)

We study sincere-strategy preference-based approval voting (SP-AV), a system proposed by Brams and Sanver [1] and here adjusted so as to coerce admissibility of the votes (rather than excluding inadmissible votes a priori), with respect to procedural control. In such control scenarios, an external agent seeks to change the outcome of an election via actions such as adding/deleting/partitioning either candidates or voters. SP-AV combines the voters' preference rankings with their approvals of candidates, where in elections with at least two candidates (...) the voters' approval strategies are adjusted – if needed – to approve of their most-preferred candidate and to disapprove of their least-preferred candidate. This rule coerces admissibility of the votes even in the presence of control actions, and hybridizes, in effect, approval with pluralitiy voting. We prove that this system is computationally resistant (i.e., the corresponding control problems are NP-hard) to 19 out of 22 types of constructive and destructive control. Thus, SP-AV has more resistances to control than is currently known for any other natural voting system with a polynomial-time winner problem. In particular, SP-AV is (after Copeland voting, see Faliszewski et al. [2, 3]) the second natural voting system with an easy winner-determination procedure that is known to have full resistance to constructive control, and unlike Copeland voting it in addition displays broad resistance to destructive control (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim). (shrink)

The short treatise known as Περὶ κόσμου is a learned piece of protreptic addressed to Alexander, ‘the best of princes’, usually identified with Alexander the Great. The treatise is traditionally attributed to Aristotle, and although it does espouse recognizably Aristotelian views, it contains various doctrinal and linguistic elements which have led the large majority of scholars to regard it as inauthentic. The dating of the treatise is a more controversial matter, though most scholars would put it somewhere in the Hellenistic (...) period. (shrink)