Gideon Yaffe

Manipulation by another person often undermines freedom. To explain this, a distinction is drawn between two forms of manipulation: indoctrination is defined as causing another person to respond to reasons in a pattern that serves the manipulator’s ends; coercion as supplying another person with reasons that, given the pattern in which he responds to reasons, lead him to act in ways that serve the manipulator’s ends. It is argued that both forms of manipulation undermine freedom because manipulators track the compliance of their victims, while neutral causal mechanisms do not. Manipulators see to it that their victims comply even in the face of forces that threaten to derail them from the manipulator’s desired course. It is suggested that this has an impact on freedom because part of what we desire in wanting to be free is the availability of forms of life very different from those we actually enjoy

In his 'Inquiry', Reid claims, against Berkeley, that there is a science of the perspectival shapes of objects ('visible figures'): they are geometrically equivalent to shapes projected onto the surfaces of spheres. This claim should be understood as asserting that for every theorem regarding visible figures there is a corresponding theorem regarding spherical projections; the proof of the theorem regarding spherical projections can be used to construct a proof of the theorem regarding visible figures, and vice versa. I reconstruct Reid's argument for this claim, and expose its mathematical underpinnings: it is successful, and depends on no empirical assumptions to which he was not entitled about the workings of the human eye. I also argue that, although Reid may or may not have been aware of it, the geometry of spherical projections is not the only geometry of visible figure

Defendants who are being tried for accepting a temptation issued by the government sometimes employ the entrapment defense. Acquittal of some of them is thought to be justified either on the grounds that culpability was undermined by the temptation or on the grounds that the government acted objectionably in issuing the temptation . Advocates of the objective approach often criticize those who employ the subjective by citing what is here called “the problem of private entrapment”: we don’t grant a defense to those who accept temptations issued by private parties, and so it can’t be, it is claimed, that temptation undermines culpability. This paper argues that there is a difference in culpability between a defendant who accepts a government-issued temptation and a defendant who accepts a temptation issued by a private party. This claim is supported by identifying a necessary condition for desert of legal punishment and arguing that the privately entrapped satisfy that condition while the governmentally entrapped do not. The difference, it is argued, is rooted in the fact that the government aims to cause the defendant to act illegally, while private parties, except in extraordinary cases, aim only to cause the defendant to act in a way that happens to be illegal. The paper also argues that, despite appearances to the contrary, advocates of the objective approach also encounter the problem of private entrapment

This paper is concerned to bring out the philosophical contribution that Thomas Reid makes in his discussions of promising. Reid discusses promising in two contexts: he argues that the practice of promising presupposes the belief that the promisor is endowed with what he calls 'active power' , and he argues against Hume's claim that the very act of promising—and the obligation to do as one promised—are "artificial," or the products of human convention . In addition to explaining what Reid says in each of these two contexts, the paper demonstrates that the two discussions are linked. It is, in part, because he thinks that promises are a special kind of act —performable solely through the exercise of our native, natural capacities—that he thinks that the practice of promising presupposes active power. Towards this end, the paper explains how Reid conceives of active power and explains his concept of a social act. The paper argues that, when considered as part of a single, unitary conception of the nature of promises, Reid's two discussions provide important insights into the nature of promising, particularly with regard to the sense in which promisory obligations are conditional: they are conditional upon a rather short list of circumstances that are not within our power—a shorter list than those on which other obligations are conditional