Michael Huemer

Einwanderungsbeschränkungen verletzen das Anscheinsrecht (engl. prima facie right) Einwanderungswilliger, keinem schädlichem Zwang ausgesetzt zu werden. Dieses Anscheinsrecht wird nicht durch die wirtschaftlichen, fiskalischen und kulturellen Folgen der Einwanderung entkräftet oder verdrängt – und auch nicht durch die besondere Pflicht, welche der Staat gegenüber seinen eigenen Bürgern und speziell den Ärmsten unter ihnen hat. Er hat gleichfalls kein Recht, Bedingungen für die Staatsbürgerschaft in gleicher Weise aufzustellen, wie dies private Clubs als Voraussetzung für die Mitgliedschaft tun. [This is a German translation of: „Is There a Right to Immigrate?“, Social Theory and Practice, Vol. 36, No. 3 (2010), pp. 429-61.]

A four-part series of dialogues between two philosophy students, M and V. The question: is it wrong to eat meat? M and V review the standard arguments plus a few new ones. Part 2 discusses miscellaneous defenses of meat-eating. These include the claim that the consumer is not responsible for wrongs committed by farm workers, that a single individual cannot have any effect on the meat industry, that farm animals are better off living on factory farms than never existing at all, that we can’t be sure animals feel pain, that animals can justly be eaten since they eat each other, that meat-eating is natural, that morality only protects those who can understand morality, that morality only protects members of society, and that only humans possess souls.

The justificatory force of empirical reasoning always depends upon the existence of some synthetic, a priori justification. The reasoner must begin with justified, substantive constraints on both the prior probability of the conclusion and certain conditional probabilities; otherwise, all possible degrees of belief in the conclusion are left open given the premises. Such constraints cannot in general be empirically justified, on pain of infinite regress. Nor does subjective Bayesianism offer a way out for the empiricist. Despite often-cited convergence theorems, subjective Bayesians cannot hold that any empirical hypothesis is ever objectively justified in the relevant sense. Rationalism is thus the only alternative to an implausible skepticism.

Sense data are the alleged mind-dependent objects that we are directly aware of in perception, and that have exactly the properties they appear to have. For instance, sense data theorists say that, upon viewing a tomato in normal conditions, one forms an image of the tomato in one's mind. This image is red and round. The mental image is an example of a “sense datum.” Many philosophers have rejected the notion of sense data, either because they believe that perception gives us direct awareness of physical phenomena, rather than mere mental images, or because they believe that the mental phenomena involved in perception do not have the properties that appear to us (for instance, I might have a visual experience representing a red, round tomato, but my experience is not itself red or round). Defenders of sense data have argued, among other things, that sense data are required to explain such phenomena as perspectival variation, illusion, and hallucination. Critics of sense data have objected to the theory's commitment to mind-body dualism, the problems it raises for our knowledge of the external world, its difficulty in locating sense data in physical space, and its apparent commitment to the existence of objects with indeterminate properties

A central problem facing a probabilistic approach to the problem of induction is the difficulty of sufficiently constraining prior probabilities so as to yield the conclusion that induction is cogent. The Principle of Indifference, according to which alternatives are equiprobable when one has no grounds for preferring one over another, represents one way of addressing this problem; however, the Principle faces the well-known problem that multiple interpretations of it are possible, leading to incompatible conclusions. I propose a partial solution to the latter problem, drawing on the notion of explanatory priority. The resulting synthesis of Bayesian and inference-to-best-explanation approaches affords a principled defense of prior probability distributions that support induction

:Ideal theorists in political philosophy seek to describe a perfect political society, and to evaluate political principles by reference to their consequences in a world where everyone complies with the principles. I argue that ideal theory is not needed to set goals for practical inquiries, nor to define justice, nor to enable rankings of injustices. Nor is it useful to theorize about very different kinds of society that might occur in the far future. Ideal theory tempts us to make each of three kinds of error: it tempts us to propose norms that no specific agent can act on, to posit crazy exaggerations of moral virtues, and to place too much trust in abstract philosophical reasoning. A better approach to normative questions is to rely on analogical arguments starting from uncontroversial intuitions about concrete scenarios.

Trenton Merricks argues that on any reasonable account, warrant must entailtruth. I demonstrate three theses about the properties ofwarrant: (1) Warrant is not unique;there are many properties that satisfy the definition of warrant. (2) Warrant need not entail truth; there are some warrant properties that entailtruthand others that do not. (3) Warrant need not be closed under entailment, even if knowledge is. If knowledge satisfies closure, then some warrant properties satisfy closure while others do not;if knowledge violates closure, then allwarrant properties violate closure.

The brain-in-a-vat argument for skepticism is best formulated, not using the closure principle, but using the “Preference Principle,” which states that in order to be justified in believing H on the basis of E, one must have grounds for preferring H over each alternative explanation of E. When the argument is formulated this way, Dretske’s and Klein’s responses to it fail. However, the strengthened argument can be refuted using a direct realist account of perception. For the direct realist, refuting the SIV scenario is not a precondition on knowledge of the external world, and only the direct realist can give a non-circular account of how we know we’re not brains in vats

In The Structure of Empirical Knowledge , Laurence BonJour argues that coherence among a set of empirical beliefs can provide justification for those beliefs, in the sense of rendering them likely to be true. He also repudiates all forms of foundationalism for empirical beliefs, including what he calls "weak foundationalism" (the weakest form of foundationalism he can find). In the following, I will argue that coherence cannot provide any justification for our beliefs in the manner BonJour suggests unless some form of foundational justification is assumed. In other words, the argument that BonJour gives in favor of the thesis that coherence provides a kind of justification succeeds if and only if some beliefs have (at least weak) foundational justification.