Scholars of classical philosophy have long disputed whether Aristotle was a dialectical thinker. Most agree that Aristotle contrasts dialectical reasoning with demonstrative reasoning, where the former reasons from generally accepted opinions and the latter reasons from the true and primary. Starting with a grasp on truth, demonstration never relinquishes it. Starting with opinion, how could dialectical reasoning ever reach truth, much less the truth about first principles? Is dialectic then an exercise that reiterates the prejudices of one's times and at (...) best allows one to persuade others by appealing to these prejudices, or is it the royal road to first principles and philosophical wisdom? In From Puzzles to Principles? May Sim gathers experts to argue both these positions and offer a variety of interpretive possibilities. The contributors' thoughtful reflections on the nature and limits of dialectic should play a crucial role in Aristotelian scholarship. (shrink)

In A.D. 60 Nero instituted at Rome a quinquennale certamen which he called Neronia. It was in three sections—athletics, chariot-racing, and music —after a Greek model. This model would be that of the Pythian rather than of the Olympic Games, for at the latter there was no regular musical contest; though perhaps Nero got his immediate inspiration from the Augustalia at Naples, which was an athletic and musical festival of a religious nature.

Thus the passage is printed in the Teubner edition of Seneca's Dialogues by E. Hermes, who, on the strength of Aen. 8. 702 f. , adds a note on the quotation ‘versus sunt Vergilii a Seneca licenter mutati’. Now the imputation to Seneca of such gross alteration of Virgil can only be supported if we disregard or eject the evidence to the contrary. As only the last five words are actually Virgilian; as Seneca himself says ‘aput vate nostra?’; as out (...) at the beginning of the second line may introduce a second quotation ; and as est, which Gertz secluded, has a part to play if the lines are by different poets, it is safer to take a step backwards and dispose the passage thus. (shrink)

‘Shameful are the scars inflicted by the sin of fraternal strife! What has ourunconscionable generation shunned, what abomination left undone? Ourgodless soldiery has held nothing sacred. I pray that Fortune may, on a new anvil, give our blunted swords another shape, to use against Massagetae andArabs!‘.

Commentator: Mark Purvis Commentator: Sheena McMain Commentator: Clare Connolly Commentator: Maggie Eisner Commentator: Shirley Brierley Commentator: Becky Ship.

We present a one per cent measurement of the cosmic distance scale from the detections of the baryon acoustic oscillations in the clustering of galaxies from the Baryon Oscillation Spectroscopic Survey, which is part of the Sloan Digital Sky Survey III. Our results come from the Data Release 11 sample, containing nearly one million galaxies and covering approximately 8500 square degrees and the redshift range 0.2 < z < 0.7. We also compare these results with those from the publicly released (...) DR9 and DR10 samples. Assuming a concordance Λ cold dark matter cosmological model, the DR11 sample covers a volume of 13 Gpc3 and is the largest region of the Universe ever surveyed at this density. We measure the correlation function and power spectrum, including density-field reconstruction of the BAO feature. The acoustic features are detected at a significance of over 7σ in both the correlation function and power spectrum. Fitting for the position of the acoustic features measures the distance relative to the sound horizon at the drag epoch, rd, which has a value of rd,fid = 149.28 Mpc in our fiducial cosmology. We find DV = at z = 0.32 and DV = at z = 0.57. At 1.0 per cent, this latter measure is the most precise distance constraint ever obtained from a galaxy survey. Separating the clustering along and transverse to the line of sight yields measurements at z = 0.57 of DA = and H =. Our measurements of the distance scale are in good agreement with previous BAO measurements and with the predictions from cosmic microwave background data for a spatially flat CDM model with a cosmological constant. © 2014 The Author Published by Oxford University Press on behalf of the Royal Astronomical Society. (shrink)

Putative examples of true contradictions in the social world have been given by dialetheists such as Graham Priest, Richard Routley, and Val Plumwood. However, we feel that it has not been decisively argued that these examples are in fact true contradictions rather than merely apparent. In this paper we adopt a new strategy to show that there are some true contradictions in the social world, and hence that dialetheism is correct. The strategy involves showing that a group of sincere dialetheists (...) can, given an appropriately formed institution, bootstrap contradictions into existence. We discuss objections and consider the implications of this finding for debates over logic. (shrink)

J. D. P. Bolton has argued in the C.Q. 1948 that although there is some confusion in the use of the term ‘quinquennalis’ in the first century A.D., the linguistic and literary evidence suggests that the Neronia was a four-yearly festival, that the celebration which Tacitus records in 65 was merely a postponement of part of the celebration due in 64, and that such a view is supported by the evidence of Nero's issues of Certamen Quinquennale semisses. Bolton (...) divides these semisses into four main groups: Copper. With sc on reverse. Obverse: bare head of Nero; legend NERO CAESAR AVGVSTVS variously abbreviated. (shrink)

Method in Ancient Philosophy brings together fifteen new, specially written essays by leading scholars on a broad subject of central importance. The ancient Greeks recognized that different forms of human activity are guided by different methods of reasoning; examination of how they reasoned, and how they thought about their own reasoning, helps us to see how they came to hold the views they did, and how our own methods of enquiry have developed under their influence. Contributors include Terence Irwin, Patricia (...) Curd, Ian Mueller, Robert Bolton, A.A. Long, Gail Fine, Constance C. Meinwald, Lesley Brown, Gisela Striker, C.D.C. Reeve, Charlotte Witt, Richard Kraut, Sarah Broadie, James Allen, and G.E.R. Lloyd. (shrink)

Multiple -conclusion logic extends formal logic by allowing arguments to have a set of conclusions instead of a single one, the truth lying somewhere among the conclusions if all the premises are true. The extension opens up interesting possibilities based on the symmetry between premises and conclusions, and can also be used to throw fresh light on the conventional logic and its limitations. This is a sustained study of the subject and is certain to stimulate further research. Part I reworks (...) the fundamental ideas of logic to take account of multiple conclusions, and investigates the connections between multiple - and single - conclusion calculi. Part II draws on graph theory to discuss the form and validity of arguments independently of particular logical systems. Part III contrasts the multiple - and the single - conclusion treatment of one and the same subject, using many-valued logic as the example; and Part IV shows how the methods of 'natural deduction' can be matched by direct proofs using multiple conclusions. (shrink)

The effects in a quantum-mechanical system form a partial algebra and a partially ordered set which is the prototypical example of the effect algebras discussed in this paper. The relationships among effect algebras and such structures as orthoalgebras and orthomodular posets are investigated, as are morphisms and group- valued measures (or charges) on effect algebras. It is proved that there is a universal group for every effect algebra, as well as a universal vector space over an arbitrary field.

Recent studies using functional magnetic resonance imaging of patients in a vegetative state have raised the possibility that such patients retain some degree of consciousness. In this paper, the ethical implications of such findings are outlined, in particular in relation to decisions about withdrawing life-sustaining treatment. It is sometimes assumed that if there is evidence of consciousness, treatment should not be withdrawn. But, paradoxically, the discovery of consciousness in very severely brain-damaged patients may provide more reason to let them die. (...) Although functional neuroimaging is likely to play an increasing role in the assessment of patients in a vegetative state, caution is needed in the interpretation of neuroimaging findings. (shrink)

Background: The traditional approach to resolving ethics concerns may not address underlying organisational issues involved in the evolution of these concerns. This represents a missed opportunity to improve quality of care “upstream”. The purpose of this study was to understand better which organisational issues may contribute to ethics concerns. Methods: Directed content analysis was used to review ethics consultation notes from an academic children’s hospital from 1996 to 2006 (N = 71). The analysis utilised 18 categories of organisational issues derived (...) and modified from published quality improvement protocols. Results: Organisational issues were identified in 68 of the 71 (96%) ethics consult notes across a range of patient settings and reasons for consultation. Thirteen of the 18 categories of organisational issues were identified and there was a median of two organisational issues per consult note. The most frequently identified organisational issues were informal organisational culture (eg, collective practices and approaches to situations with ethical dimensions that are not guided by policy), policies and procedures (eg, staff knows policy and/or procedural guidelines for an ethical concern but do not follow it) and communication (eg, communication about critical information, orders, or hand-offs repeatedly does not occur among services). Conclusions: Organisational issues contribute to ethical concerns that result in clinical ethics consults. Identifying and addressing organisational issues such as informal culture and communication may help decrease the recurrence of future similar ethics concerns. (shrink)