Levinstein recently presented a challenge to accuracy-first epistemology. He claims that there is no strictly proper, truth-directed, additive, and differentiable scoring rule that recognises the contingency of varying importance, i.e., the fact that an agent might value the inaccuracy of her credences differently at different possible worlds. In my response, I will argue that accuracy-first epistemology can capture the contingency of varying importance while maintaining its commitment to additivity, propriety, truth-directedness, and differentiability. I will construct a scoring rule — a (...) weighted scoring rule — and a global inaccuracy measure that has all four required properties and recognises the contingency of varying importance. I will show that Levinstein’s and my results coexist without contradicting each other. (shrink)

Thirders sometimes feel compelled to give the same answer – a credence of 1/3 – to the original and the duplicating Sleeping Beauty problem, which leads to some unwanted consequences. I will argue that they do not have to feel compelled to give the same answer, because the original and the duplicating version of the Sleeping Beauty problem are different types of decision problems. If one accepts that it is rationally permissible to give different answers to different types of decision (...) problems, both versions do not require the same solution. (shrink)

In the debate about the legal value of naked statistical evidence, Di Bello argues that (1) the likelihood ratio of such evidence is unknown, (2) the decision-theoretic considerations indicate that a conviction based on such evidence is unacceptable when expected utility maximization is combined with fairness constraints, and (3) the risk of mistaken conviction based on such evidence cannot be evaluated and is potentially too high. We argue that Di Bello’s argument for (1) works in a rather narrow context, and (...) that (1) is not exactly in line with the way expert witnesses are required to formulate their opinions. Consequently, Di Bello’s argument for (2), which assumes (1), does not apply uniformly to all convictions based on naked evidence. Moreover, if Di Bello’s analysis is correct, it applies also to eyewitness testimony, given empirical results about its quality, and so the distinctions drawn by DiBello cut across the distinction between naked statistical evidence and other types of evidence. Finally, if we weaken the rather strong requirement of precise measurability of the risk of mistaken conviction, to the availability of reasonable but imprecise and fallible estimates, many field and empirical studies show that often the risk of mistaken conviction based on naked statistical evidence can be estimated to a similar extent as the risk of mistaken conviction based on any other sort of evidence. (shrink)

Rédei and Gyenis recently displayed strong constraints of Bayesian learning. However, they also presented a positive result for Bayesianism. Despite the limited significance of this positive result, I find it useful to discuss its two possible strengthenings to present new results and open new questions about the limits of Bayesianism. First, I will show that one cannot strengthen the positive result by restricting the evidence to so-called “certain evidence”. Secondly, strengthening the result by restricting the partitions—as parts of one’s evidence—to (...) Jeffrey-independent partitions requires additional constraints on one’s evidence to preserve its commutativity. So, my results provide additional grounds for caution and support for the limitations of Bayesian learning. (shrink)

Clem tto prce je ukzat Fergusonovy zkladn teze tkajc se pojet lidsk pirozenosti a zkoumat, jak z nich plynou zvry a jestli mohou tyto zvry neproblematicky koexistovat. V prvn sti prce se chci pokusit najt vnitn jednotu ve Fergusonov teorii lidsk pirozenosti a ukzat, e Fergusonovo pojet lovka je konklusivn. Zkoumn pirozenosti lovka je pro Fergusona velmi tsn spjato se zkoumn vztahu jedince a spolenosti. Prv v pojet tohoto vztahu vznik problmov situace, pokud budeme chtt podret Fergusonovu verzi a pidat (...) k n teorii morlnho citu. Na rozbor tto problematiky se zamm v posledn sti prce. Prce se zabv Fergusonovou teori spadajc pouze do obdob, kdy napsal "An Essay on the History of Civil Society". (shrink)

Práce si klade za cíl kriticky prozkoumat teorii J. S. Milla o rozlišení kvalitativní a kvantitativní charakteristice požitků (pleasure). Mill svoji teorii představil jako reakci na kritiku, že utilitární teorie vyhovuje jen zvířecí povaze lidské přirozenost a neuvažuje o vyšších schopnostech lidského ducha. Millova expozice teorie ale není v mnoha pasážích zcela jasná a průhledná. Práce se zaměřuje hlavně na prozkoumání problematického vztahu mezi kvantitativní stránkou a kvalitativní stránkou potěšení.