Dall'autore del più visitato sito web dedicato a Giordano Bruno, un volume in chiusura dell'anno bruniano, edito da Marotta & Cafiero: WWW.Giordano Bruno di Guido del Giudice è un assai originale pubblicazione che trova nella passione filosofica di chi lo ha scritto la sua più profonda motivazione.

We provide a 'verisimilitudinarian' analysis of the well-known Linda paradox or conjunction fallacy, i.e., the fact that most people judge the probability of the conjunctive statement "Linda is a bank teller and is active in the feminist movement" (B & F) as more probable than the isolated statement "Linda is a bank teller" (B), contrary to an uncontroversial principle of probability theory. The basic idea is that experimental participants may judge B & F a better hypothesis about Linda as compared (...) to B because they evaluate B & F as more verisimilar than B. In fact, the hypothesis "feminist bank teller", while less likely to be true than "bank teller", may well be a better approximation to the truth about Linda. (shrink)

A survey of some game-theoretic accounts of the emergence and evolution of spontaneuous cooperation in social and public-good dilemmas.

This is the introductory essay to the Italian translation of Matt Ridley's "The origins of virtue", surveying the game-theoretic and evolutionary approaches to the emergence and evolution of cooperation and altruism.

The paper focuses on Anthony de Jasay's "anarcho-liberalism" as based oon his game-theoretic approach to the problem of public goods provision.

The Linda paradox is a key topic in current debates on the rationality of human reasoning and its limitations. We present a novel analysis of this paradox, based on the notion of verisimilitude as studied in the philosophy of science. The comparison with an alternative analysis based on probabilistic confirmation suggests how to overcome some problems of our account by introducing an adequately defined notion of verisimilitudinarian confirmation.

Bayesian confirmation theory is rife with confirmation measures. Many of them differ from each other in important respects. It turns out, though, that all the standard confirmation measures in the literature run counter to the so-called “Reverse Matthew Effect” (“RME” for short). Suppose, to illustrate, that H1 and H2 are equally successful in predicting E in that p(E | H1)/p(E) = p(E | H2)/p(E) > 1. Suppose, further, that initially H1 is less probable than H2 in that p(H1) < p(H2). (...) Then by RME it follows that the degree to which E confirms H1 is greater than the degree to which it confirms H2. But by all the standard confirmation measures in the literature, in contrast, it follows that the degree to which E confirms H1 is less than or equal to the degree to which it confirms H2. It might seem, then, that RME should be rejected as implausible. Festa (2012), however, argues that there are scientific contexts in which RME holds. If Festa’s argument is sound, it follows that there are scientific contexts in which none of the standard confirmation measures in the literature is adequate. Festa’s argument is thus interesting, important, and deserving of careful examination. I consider five distinct respects in which E can be related to H, use them to construct five distinct ways of understanding confirmation measures, which I call “Increase in Probability”, “Partial Dependence”, “Partial Entailment”, “Partial Discrimination”, and “Popper Corroboration”, and argue that each such way runs counter to RME. The result is that it is not at all clear that there is a place in Bayesian confirmation theory for RME. (shrink)

There are numerous (Bayesian) confirmation measures in the literature. Festa provides a formal characterization of a certain class of such measures. He calls the members of this class “incremental measures”. Festa then introduces six rather interesting properties called “Matthew properties” and puts forward two theses, hereafter “T1” and “T2”, concerning which of the various extant incremental measures have which of the various Matthew properties. Festa’s discussion is potentially helpful with the problem of measure sensitivity. I argue, that, (...) while Festa’s discussion is illuminating on the whole and worthy of careful study, T1 and T2 are strictly speaking incorrect (though on the right track) and should be rejected in favor of two similar but distinct theses. (shrink)

The current and the next issues of “Spazio Filosofico”, both devoted to Festival (Festival I and II respectively), are dedicated to Ugo Perone on the occasion of his 70th birthday. Perone’s friends and colleagues have chosen to celebrate his birthday in a philosophical way, namely, with a reflection on the concept of festival/holiday [festa] and its meaning for us today. Thrifty spirits might object that a journal issue is like a gift – one is enough. Are these not times (...) of economic crisis? There is no real festival, however, without a Zugabe: without an addition, an encore, or a supplement. Hence, two issues, both devoted to a single concept. The choice of the theme has not been accidental – the concept of “festival/holiday” plays in fact an important role in Perone’s thought. In an essay that is often quoted in various contributions to the two issues, Perone understands the pair of concepts “ultimate/penultimate,” which has been discussed by Dietrich Bonhoeffer, in terms of “holidays/everydayness.” For Bonhoeffer, God is present not where human abilities fail but rather “at the center of the village.” Likewise, for Perone, the square, which is the “symbol for the holiday time,” is the center of town. It is even, “at the same time, the center of town and its interruption.” . (shrink)