CFP: Logic Workshop in Honor of Horacio Arló-Costa

SADAF, the Argentine Society for Philosophical Analysis, is organizing a Tribute to Horacio Arló-Costa, to take place in Buenos Aires, August 2nd to 4th, 2012.

Invited speakers:
Verónica Becher (Universidad de Buenos Aires)
John Collins (Columbia University)
Paul Egré (Jean Nicod Institute)
Jeff Helzner (Columbia University)
Rohit Parikh (City University of New York)
Fernando Tohmé (Universidad Nacional del Sur)

To be confirmed:
Cristina Bicchieri (University of Pensylvannia)
Alberto Moretti (SADAF-Universidad de Buenos Aires-CONICET)
Gladys Palau (Universidad de Buenos Aires)
Paul Pedersen (Carnegie Mellon University)

We call for contributions in any area of philosophical logic, including (but not limited to) epistemic and modal logic, ampliative reasoning, belief revision, conditional logic, game theory and decision theory, among other topics.

We invite submissions for 40-minute presentations. Submissions should take the form of a 1000/1500-word abstract. They should be sent by e-mail in an attached file in pdf format to Authors’ names and affiliation should be given only in the text of the e-mail message. The abstracts will be blind reviewed by an international scientific committee. English and Spanish will be the official languages of the conference. However, we encourage contributors to provide to the audience an extended abstract, ppt presentation, handout or full paper in English during the Conference.

Deadline for reception of submissions:  March 30th, 2012
Communication of acceptance/rejection: May 30th, 2012

For further particulars, please check the SADAF website or contact us by sending an e-mail to

Organizing Committee: Eduardo Barrio, Eleonora Cresto, Sandra Lazzer, Diana Pérez.
Scientific Committee: Verónica Becher, John Collins, Paul Egré, Jeff Helzner, Alberto Moretti, Gladys Palau, Rohit Parikh, Fernando Tohmé.


SADAF, the Argentine Society for Philosophical Analysis, is a non-profit organization devoted to research in philosophy. It was founded in 1972, and at present it counts with more than two hundred members, many of which are either faculty members or advanced students at various universities in Argentina and abroad. SADAF offers seminars and colloquium series, and hosts different kinds of academic meetings all year round. Since 1981 it is also home of Análisis Filosófico, a biannual, peer-reviewed journal of philosophy. Horacio Arló-Costa was an active member of SADAF while he lived in Argentina, and kept close ties with our institution after leaving the country. More information in Spanish

Reposted from here.

Wheeler: Coherence

News from Jeff:

I want to call your attention to the following “brown bag lunch” talk by Greg Wheeler, Senior Research Scientist and Executive Board Member at the Center for Artificial Intelligence (CENTRIA) in Lisbon. The talk should be of interest to researchers from a variety of fields that make use of Bayesian methods. The abstract for Greg’s talk is as follows:

Coherence at last!
Gregory Wheeler (joint work with Richard Scheines, Carnegie Mellon)

Abstract. Coherentism maintains that coherent beliefs are more likely to be true than incoherent beliefs, and that coherent evidence provides more confirmation of a hypothesis when the evidence is made coherent by the explanation provided by that hypothesis. Although probabilistic models of credence ought to be well-suited to justifying such claims, negative results from Bayesian epistemology have suggested otherwise. In this essay we argue that the connection between coherence and confirmation should be understood as a relation mediated by the causal relationships among the evidence and a hypothesis, and we offer a framework for doing so by fitting together probabilistic models of coherence, confirmation, and causation. We show that the causal structure among the evidence and hypothesis is sometimes enough to determine whether the coherence of the evidence boosts confirmation of the hypothesis, makes no difference to it, or even reduces it.  We also show that, ceteris paribus, it is not the coherence of the evidence that boosts confirmation, but rather the ratio of the coherence of the evidence to the coherence of the evidence conditional on a hypothesis.

Hintikka on S4 vs. S5

See sections 3.7-3.9 of Knowledge and Belief for the sorts of arguments that Haim briefly discussed last meeting.

Levi Celebration

On October 22nd, the philosophy department at the University of Toronto will host an event in honor of Isaac Levi. Of most interest to the group, the morning session will be on formal pragmatist epistemology. Ian Hacking and Levi will give the final two talks.