There have been and continue to be disagreements about how to consider the traditional square of opposition and the traditional inferences of obversion, conversion, contraposition and inversion from the perspective of contemporary quantificational logic. Philosophers have made many different attempts to save traditional inferences that are invalid when they involve empty classes. I survey some of these attempts and argue that the only satisfactory way of saving all the traditional inferences is to make the existential assumption that both the subject (...) and predicate classes and their complement classes are non-empty for all the propositions we admit. I briefly indicate the room for continued controversy over how properly to interpret Aristotle?s statements regarding these inferences, but find some plausibility in the views of Manley Thompson and A.N.Prior that Aristotle had in mind a particular arrangement of existential import unfamiliar to most contemporary logicians. (shrink)

Notoriously, the Einstein equations of general relativity have solutions in which closed timelike curves occur. On these curves time loops back onto itself, which has exotic consequences: for example, traveling back into one's own past becomes possible. However, in order to make time travel stories consistent constraints have to be satisfied, which prevents seemingly ordinary and plausible processes from occurring. This, and several other "unphysical" features, have motivated many authors to exclude solutions with CTCs from consideration, e.g. by conjecturing a (...) chronology protection law. In this contribution we shall investigate the nature of one particular class of exotic consequences of CTCs, namely those involving unexpected cases of indeterminism or determinism. Indeterminism arises even against the backdrop of the usual deterministic physical theories when CTCs do not cross spacelike hypersurfaces outside of a limited CTC-region|such hypersurfaces fail to be Cauchy surfaces. We shall compare this CTC-indeterminism with four other types of indeterminism that have been discussed in the philosophy of physics literature: quantum indeterminism, the indeterminism of the hole argument, non-uniqueness of solutions of differential equations and lack of predictability due to insuffcient data. By contrast, a certain kind of determinism appears to arise when an indeterministic theory is applied on a CTC: things cannot be different from what they already were. Again we shall make comparisons, this time with other cases of determination in physics. We shall argue that on further consideration both this indeterminism and determinism on CTCs turn out to possess analogues in other, familiar areas of physics. CTC- indeterminism is close to the epistemological indeterminism we know from statistical physics, while the "fixedness" typical of CTC-determinism is pervasive in physics. CTC- determinism and CTC-indeterminism therefore do not provide incontrovertible grounds for rejecting CTCs as conceptually inadmissible. (shrink)

Vaccination can protect vaccinated individuals and often also prevent them from spreading disease to other people. This opens up the possibility of getting vaccinated for the sake of others. In fact, altruistic vaccination has recently been conceptualized as a kind of vaccination that is undertaken primary for the benefit of others. In order to better understand the potential role of altruistic motives in people’s vaccination decisions, we conducted two focus group studies with a total of 37 participants. Study 1 included (...) three focus groups on the subject of HPV vaccination for boys. Study 2 included three focus groups on the subject of pertussis and measles vaccination for childcare workers. We found substantial evidence of other-regarding motives across all focus groups, which suggests that altruistic motives could be an important factor when it comes to people’s vaccination decisions. We address the significance of these findings for vaccination policy surrounding HPV vaccination for boys and vaccination for childcare workers. We also extend the findings to normative work on vaccination for the sake of others more generally. (shrink)

Ex aequo et bono compensations refer to tribunal’s compensations that cannot be determined exactly according to the rule of law, in which case the judge relies on an estimate that seems fair for the case at hand. Such cases are prone to legal uncertainty, given the subjectivity that is inherent to the concept of fairness. We show how basic principles from statistics and machine learning may be used to reduce legal uncertainty in ex aequo et bono judicial decisions. For a (...) given type of ex aequo et bono dispute, we consider two general stages in estimating the compensation. First, the stage where there is significant disagreement among judges as to which compensation is fair. In that case, we let judges rule on such disputes, while a machine tracks a certain measure of the relative differences of the granted compensations. In the second stage that measure, which expresses the degree of legal uncertainty, has dropped below a predefined threshold. From then on legal decisions on the quantity of the ex aequo et bono compensation for the considered type of dispute may be replaced by the average of previous compensations. The main consequence is that this type of dispute is, from this stage on, free of legal uncertainty. (shrink)

Civil Dialogue on Abortion provides a cutting-edge discussion between two philosophy scholars on each side of the abortion debate. Bertha Alvarez Manninen argues for her pro-choice view, but also urges respect for the life of the fetus, while Jack Mulder argues for his pro-life view, but recognizes that for the pro-life movement to be consistent, it must urge society to care more for the vulnerable. Coming together to discuss their views, but also to seek common ground, the two authors (...) show how their differing positions nevertheless rest upon some common convictions. The book helps to provide a way forward for a divide that has only seemed to widen the aisle of public discourse in recent years. This engaging book will prove essential reading for students across multiple disciplines, including applied ethics, medical ethics, and bioethics, but will also be of interest to students of religious studies and women's studies. (shrink)

In this paper I defend the view that not only does Fear and Trembling espouse the teleological suspension of the ethical as a radical suspension and even possible violation of otherwise ethical duties, but also that Kierkegaard himself espouses it and carries the belief through his entire authorship. A brief analysis of Religiousness A suggests that Climacus made a dialectical error in Concluding Unscientific Postscript. This error is corrected by Anti-Climacus and Kierkegaard's own journals, and the correction makes possible a (...) full-blooded affirmation of the teleological suspension where Climacus failed. This reaffirmation can explain the shift from Climacus to Anti-Climacus on the topic of hidden inwardness as well as the shift from Climacus to Kierkegaard on the topic of religious suffering. It can also provide a legitimate Kierkegaardian alterative to positing a stage Merold Westphal (and not Kierkegaard) has termed Religiousness C. What we are left with is an uncompromisingly radical religious dialectic that gives every appearance of being exactly what Kierkegaard intended. (shrink)