© 2017. The American Astronomical Society. All rights reserved.We present new observations of the low-mass companion to HD 984 taken with the Gemini Planet Imager as a part of the GPI Exoplanet Survey campaign. Images of HD 984 B were obtained in the J and H bands. Combined with archival epochs from 2012 and 2014, we fit the first orbit to the companion to find an 18 au orbit with a 68% confidence interval between 14 and 28 au, an eccentricity (...) of 0.18 with a 68% confidence interval between 0.05 and 0.47, and an inclination of 119°with a 68% confidence interval between 114°and 125°. To address the considerable spectral covariance in both spectra, we present a method of splitting the spectra into low and high frequencies to analyze the spectral structure at different spatial frequencies with the proper spectral noise correlation. Using the split spectra, we compare them to known spectral types using field brown dwarf and low-mass star spectra and find a best-fit match of a field gravity M6.5 ±1.5 spectral type with a corresponding temperature of K. Photometry of the companion yields a luminosity of log=2.88 ± 0.07 dex with DUSTY models. Mass estimates, again from DUSTY models, find an age-dependent mass of 34 ±1 to 95 ±4 M Jup. These results are consistent with previous measurements of the object. (shrink)

The notion that our society, its education system and its intellectual life, is characterised by a split between two cultures – the arts or humanities on one hand and the sciences on the other – has a long history. But it was C. P. Snow's Rede lecture of 1959 that brought it to prominence and began a public debate that is still raging in the media today. This fiftieth anniversary printing of The Two Cultures and its successor piece, A Second (...) Look features an introduction by Stefan Collini, charting the history and context of the debate, its implications and its afterlife. The importance of science and technology in policy run largely by non-scientists, the future for education and research, and the problem of fragmentation threatening hopes for a common culture are just some of the subjects discussed. (shrink)

The notion that our society, its education system and its intellectual life, is characterised by a split between two cultures – the arts or humanities on one hand, and the sciences on the other – has a long history. But it was C. P. Snow's Rede lecture of 1959 that brought it to prominence and began a public debate that is still raging in the media today. This 50th anniversary printing of The Two Cultures and its successor piece, A Second (...) Look features an introduction by Stefan Collini, charting the history and context of the debate, its implications and its afterlife. The importance of science and technology in policy run largely by non-scientists, the future for education and research, and the problem of fragmentation threatening hopes for a common culture are just some of the subjects discussed. (shrink)

The Heythrop Journal, Volume 63, Issue 3, Page 333-348, May 2022.

Offering an original perspective on the central project of Descartes' Meditations, this book argues that Descartes' free will theodicy is crucial to his refutation of skepticism. A common thread runs through Descartes' radical First Meditation doubts, his Fourth Meditation discussion of error, and his pious reconciliation of providence and freedom: each involves a clash of perspectives-thinking of God seems to force conclusions diametrically opposed to those we reach when thinking only of ourselves. Descartes fears that a skeptic could exploit this (...) clash of perspectives to argue that Reason is not trustworthy because self-contradictory. To refute the skeptic and vindicate the consistency of Reason, it is not enough for Descartes to demonstrate that our Creator is perfect; he must also show that our errors cannot prove God's imperfection. To do this, Descartes invokes the idea that we err freely. However, prospects initially seem dim for this free will theodicy, because Descartes appears to lack any consistent or coherent understanding of human freedom. In an extremely in-depth analysis spanning four chapters, Ragland argues that despite initial appearances, Descartes consistently offered a coherent understanding of human freedom: for Descartes, freedom is most fundamentally the ability to do the right thing. Since we often do wrong, actual humans must therefore be able to do otherwise-our actions cannot be causally determined by God or our psychology. But freedom is in principle compatible with determinism: while leaving us free, God could have determined us to always do the good. Though this conception of freedom is both consistent and suitable to Descartes' purposes, when he attempts to reconcile it with divine providence, Descartes's strategy fails, running afoul of his infamous doctrine that God created the eternal truths. (shrink)

Dan Baras has recently argued for the claim that Theistic Mathematical Platonism fares no better than Mathematical Platonism with respect to explaining why our mathematical beliefs are correlated with mind-independent mathematical truths. In this paper I argue that, insofar as TMP provides a proximate or local explanation for this truth-tracking correlation whereas MP fails to offer any corresponding explanation, Baras’s claim that TMP fares no better than MP with respect to explaining this correlation is false.

: The principle of alternative possibilities (PAP) says that doing something freely implies being able to do otherwise. I show that Descartes consistently believed not only in PAP, but also in clear and distinct determinism (CDD), which claims that we sometimes cannot but judge true what we clearly perceive. Because Descartes thinks judgment is always a free act, PAP and CDD seem contradictory, but Descartes consistently resolved this apparent contradiction by distinguishing between two senses of 'could have done otherwise.' In (...) one sense alternative possibilities are necessary for freedom and in another they are not. I discuss three possible interpretations of the two senses. (shrink)

In an influential article, Anthony Kenny charged that (a) the view of freedom in Descartes’ “1645 letter to Mesland” is incoherent, and (b) that this incoherence was present in Descartes’ thought from the beginning. Against (b), I argue that such incoherence would rather support Gilson’s suspicions that the 1645 letter is dishonest. Against (a), I offer a close reading of the letter, showing that Kenny’s objection seems plausible only if we misconstrue a key ambiguity in the text. I close by (...) defending Descartes against some related worries of my own about the degrees of Cartesian freedom. I conclude that there is really no good reason to deny that Descartes’ view in the 1645 letter is both internally coherent and a genuine explication of the Meditations’ account of freedom. (shrink)

C P Ormell; Ideology and the Reform of School Mathematics, Journal of Philosophy of Education, Volume 3, Issue 1, 30 May 2006, Pages 37–54, https://doi.org/10.1.

The principle of alternative possibilities (PAP) says that doing something freely implies being able to do otherwise. I show that Descartes consistently believed not only in PAP, but also in clear and distinct determinism (CDD), which claims that we sometimes cannot but judge true what we clearly perceive. Because Descartes thinks judgment is always a free act, PAP and CDD seem contradictory, but Descartes consistently resolved this apparent contradiction by distinguishing between two senses of 'could have done otherwise.' In one (...) sense alternative possibilities are necessary for freedom and in another they are not. I discuss three possible interpretations of the two senses. (shrink)

God’s providence appears to threaten the existence of human freedom. This paper examines why Descartes considered this threat merelyapparent. Section one argues that Descartes did not reconcile providence and freedom by adopting a compatibilist conception of freedom. Sections two and three argue that for Descartes, God’s superior knowledge allows God to providentially arrange free choices without causally determining them. Descartes’ position thus strongly resembles the “middle knowledge” solution of the Jesuits. Section four examines the problematic relationship between this solution and (...) the creation of the eternal truths, arguing that Descartes’ position depends on his unique understanding of divine simplicity. (shrink)

In 163 Galen gave an anatomy lesson in Rome before an audience that included ‘Demetrius of Alexandria, a friend of Favorinus, who was every day speakingin public on themes proposed to him, in the style and manner of Favorinus’.

We offer a novel interpretation of the argumentative role that Meditation IV plays within the whole of the Meditations. This new interpretation clarifies several otherwise head-scratching claims that Descartes makes about Meditation IV, and it fully exonerates the Fourth Meditation from either raising or exacerbating Descartes’ circularity problems.

Biological ontologies are used to organize, curate, and interpret the vast quantities of data arising from biological experiments. While this works well when using a single ontology, integrating multiple ontologies can be problematic, as they are developed independently, which can lead to incompatibilities. The Open Biological and Biomedical Ontologies Foundry was created to address this by facilitating the development, harmonization, application, and sharing of ontologies, guided by a set of overarching principles. One challenge in reaching these goals was that the (...) OBO principles were not originally encoded in a precise fashion, and interpretation was subjective. Here we show how we have addressed this by formally encoding the OBO principles as operational rules and implementing a suite of automated validation checks and a dashboard for objectively evaluating each ontology’s compliance with each principle. This entailed a substantial effort to curate metadata across all ontologies and to coordinate with individual stakeholders. We have applied these checks across the full OBO suite of ontologies, revealing areas where individual ontologies require changes to conform to our principles. Our work demonstrates how a sizable federated community can be organized and evaluated on objective criteria that help improve overall quality and interoperability, which is vital for the sustenance of the OBO project and towards the overall goals of making data FAIR. Competing Interest StatementThe authors have declared no competing interest. (shrink)

Herodotus has often been considered the Father of Ethnography no less than the Father of History. It comes as a paradox, then, that he has been taxed with confusion in his use of two terms that recur over and over in his discussion of peoples, ἕθνος and γνος. Here is the formulation of Raymond Weil:Hérodote definit mal l‘ethnos’. C'est pour lui tantôot une subdivision du ‘génos’, tantôt au contraire un ensemble de ‘géné’. Ainsi 1' ‘ethnos’ des Médes, comme celui des (...) Scythes, groupe plusieurs γνεα. Mais cet ‘ethnos’ scythe porte aussi le nom de ‘génos’, et comprend des ἕθνεα. Les Athéniens sont un ‘ethnos’ hellénique qui fait partie du ‘génos’ ionien, les Lacédémoniens un ‘ethnos’ pélasgique à rattacher au ‘génos’ dorien. (shrink)

In the Fourth Meditation, Descartes asks: 'If God is no deceiver, why do we sometimes err?' Descartes's answer (despite initial appearances) is both systematic and necessary for his epistemological project. Two atheistic arguments from error purport to show that reason both proves and disproves God's existence. Descartes must block them to escape scepticism. He offers a mixed theodicy: the value of free will justifies God in allowing our actual errors, and the perfection of the universe may justify God in making (...) us able to err. Though internally coherent, Descartes's theodicy conflicts with his view of divine providence. (shrink)

Herodotus has often been considered the Father of Ethnography no less than the Father of History. It comes as a paradox, then, that he has been taxed with confusion in his use of two terms that recur over and over in his discussion of peoples, θνος and γνος. Here is the formulation of Raymond Weil: Hérodote definit mal l‘ethnos’. C'est pour lui tantôot une subdivision du ‘génos’, tantôt au contraire un ensemble de ‘géné’. Ainsi 1' ‘ethnos’ des Médes, comme celui (...) des Scythes, groupe plusieurs γνεα. Mais cet ‘ethnos’ scythe porte aussi le nom de ‘génos’, et comprend des θνεα. Les Athéniens sont un ‘ethnos’ hellénique qui fait partie du ‘génos’ ionien, les Lacédémoniens un ‘ethnos’ pélasgique à rattacher au ‘génos’ dorien. (shrink)

In this interview, C. P. Goodman invites British Polanyi scholar Richard T. Allen to reflect on his interest in Polanyi’s philosophical ideas and share what he believes is valuable in his thought.

An inscription found in the theatre of Hierapolisin Phrygia and recently published is of interest both in itself and because it may help to elucidate a passage of Arrian′sDiscourses of Epictetos.

Among the works of Aelius Aristides is preserved one entitled the Rhodian It concerns an earthquake which has recently struck the city of Rhodes, and since Keil's edition of 1898 it has usually been considered spurious. The work reproduces a true speech, not something like an open letter: the clearest sign is when the author uses the deictic pronoun τοετ, ‘this here’, of the place in which he is speaking. One question is best discussed at the outset, since later it (...) will prove vital to the question of authenticity: does the speaker claim to have been in Rhodes at the moment of the earthquake? Keil assumed without argument that he does. He had clearly visited the city before the disaster as well as after it, but despite the vividness of his descriptions he nowhere says that he was present, and this reticence surely implies that he was not; and if he had been it is odd that he should talk of ‘the actual climax of the thing that befell you’, using the second person plural. I infer that the speaker had not been present, but gave the speech several months after the event ; in the last part of this paper I will argue that he is Aristides, stopping at Rhodes on his wayback from Egypt to Smyrna in or about 142. (shrink)

Becoming autonomous is a process of coming to realise oneself in shared, socio-historical practices. There can be no self before these practices, but their existence is no guarantee for selfhood either: one can be heteronomous through one's successful participation in various practices if that participation is not a genuine expression of one's own personhood. This means that the sheer capability to participate in the practices in which one finds oneself is not sufficient for personal autonomy. Something else is required before (...) the self is realised in shared, socio-historical practices. How can this be, if as we said, there can be no self before these practices? By what principle do we decide whether a particular expression of selfhood in a socio-historical practice is genuine? If there can only be a self within socio-historical practices, it stands to reason that we can find it only there. If, however, one's participation cannot be considered in advance as a genuine expression of oneself, what we may expect to find is perhaps only a fragment, a hint of autonomy always already entangled in heteronomous elements, or things that would be different if one could have so chosen. To come to an understanding of oneself, then, will require more than just a handle on one's existence in various practices. It will require the capacity to see one's participation in this socio-historically determined practice as a fragment of a whole, a particular instance of something more general which points beyond our present participation in these particular, socio-historically determined practices towards a horizon of possibility that recedes beyond our grasp whenever we try to make definitive sense out of a possibility for agency. (shrink)

Hsiao has recently developed what he considers a ‘simple and straightforward’ argument for the moral permissibility of corporal punishment. In this article we argue that Hsiao's argument is seriously flawed for at least two reasons. Specifically, we argue that a key premise of Hsiao's argument is question-begging, and Hsiao's argument depends upon a pair of false underlying assumptions, namely, the assumption that children are moral agents, and the assumption that all forms of wrongdoing demand retribution.