Moral obligation and permissibility are usually thought to be interdefinable. Following the pattern of the duality definitions of necessity and possibility, we have that something’s being permissible could be defined as its not being obligatory to not do it. And that something’s being obligatory could be defined as its not being permissible to not do it. In this paper, I argue that neither direction of this alleged interdefinability works. Roughly, the problem is that a claim that some act is (...) obligatory or permissible entails that there is a moral law, whereas a negative claim that some act is not obligatory or not permissible does not. Nevertheless, one direction of the interdefinability can potentially be salvaged. I argue that, if we do not require the conceptual possibility of moral dilemmas, then there is a way to plausibly define obligation in terms of permissibility. I conclude that permissibility is the only feasible deontic primitive. (shrink)

Hyperlogic is a hyperintensional system designed to regiment metalogical claims (e.g., “Intuitionistic logic is correct” or “The law of excluded middle holds”) into the object language, including within embedded environments such as attitude reports and counterfactuals. This paper is the first of a two-part series exploring the logic of hyperlogic. This part presents a minimal logic of hyperlogic and proves its completeness. It consists of two interdefined axiomatic systems: one for classical consequence (truth preservation under a classical interpretation of the (...) connectives) and one for “universal” consequence (truth preservation under any interpretation). The sequel to this paper explores stronger logics that are sound and complete over various restricted classes of models as well as languages with hyperintensional operators. (shrink)

Being able to apply grue-like predicates would allow one to instantly solve an infinite number of mysteries (historical, scientific, etc.). In this paper I’ll give a couple of examples. It is still a mystery whether George Mallory and Andrew Irvine managed to reach the summit of Mount Everest in 1924. The predicate “greverest” applies to an object if either the object is green and Mount Everest was scaled in 1924, or the object is not green and Mount Everest was not (...) scaled in 1924. The predicate “greverest” is interdefinable with the predicate “green”: the predicate "green" applies to an object if either the object is greverest and Mount Everest was scaled in 1924, or the object is not greverest and Mount Everest was not scaled in 1924. The predicate "non-greverest" applies to an object if either the object is non-green and Mount Everest was scaled in 1924, or the object is green and Mount Everest was not scaled in 1924. The predicate "non-green" applies to an object if either the object is non-greverest and Mount Everest was scaled in 1924, or the object is greverest and Mount Everest was not scaled in 1924. We know that the famous diamond called Golden Jubilee is not green. If someone (a greverest-speaker) informed us that the Golden Jubilee diamond is greverest, we would automatically come to know Mount Everest was not scaled in 1924. According to the definitions, a greverest object can only be either 1) green (in case Mount Everest was scaled in 1924), or 2) non-green (in case Mount Everest was not scaled in 1924). Since we know that the Golden Jubilee diamond is not green, if we come to know that the Golden Jubilee diamond is also greverest, we would automatically know from the definition of “greverest” that we are faced with case 2, the case in which the object is both non-green and greverest, and Mount Everest was not scaled in 1924. Vice versa, if someone informed us that the Golden Jubilee diamond is not greverest, we would automatically come to know that Mount Everest was scaled in 1924. According to the definitions, a non-greverest object can only be either 1) non-green (in case Mount Everest was scaled in 1924), or 2) green (in the case Mount Everest was not scaled in 1924). Since we know that the Golden Jubilee diamond is not green, if we come to know that the Golden Jubilee diamond is also non-greverest, we would automatically know from the definition of “non-greverest” that we are faced with case 1, the case in which the object is both non-green and non-greverest, and Mount Everest was scaled in 1924. At the moment no one has yet been able to convince the scientific community that he can correctly determine whether the Golden Jubilee diamond is greverest. I am skeptical that anyone will demonstrate to the scientific community that he can correctly determine whether a specific object is greverest; but I would be happy if someone could demonstrate to the scientific community that he can correctly determine whether an object is greverest: that would be a good news for historical studies. The paper continues with a second example. (shrink)

In a shift of position that has gone largely unnoticed by the great majority of commentators, Thomas Kuhn's version of the incommensurability thesis underwent a major transformation over the last decade and a half of his life. In his later work, Kuhn argued that incommensurability is a relation of translation failure between local subsets of interdefined theoretical terms, which encapsulate the taxonomic structure of a theory. Incommensurability arises because it is impossible to transfer the natural categories employed within one taxonomic (...) structure into the categorial system of another such structure. Apparently on the basis of such taxonomic incommensurability, Kuhn asserted a number of antirealist theses about truth, reference and reality. In this paper, it will be argued, however, that, far from leading to antirealist consequences about the relationship between theory and reality, the taxonomic incommensurability thesis may be incorporated unproblematically within a reasonably robust scientific realist framework. (shrink)

The thesis defended, the “guise of the ought”, is that the formal objects of desires are norms (oughts to be or oughts to do) rather than values (as the “guise of the good” thesis has it). It is impossible, in virtue of the nature of desire, to desire something without it being presented as something that ought to be or that one ought to do. This view is defended by pointing to a key distinction between values and norms: positive and (...) negative norms (obligation and interdiction) are interdefinable through negation; positive and negative values aren’t. This contrast between the norms and values, it is argued, is mirrored, within the psychological realm, by the contrast between the desires and emotions. Positive and negative desires are interdefinable through negation, but positive and negative emotions aren’t. The overall, Meinongian picture suggested is that norms are to desires what values are to emotions. (shrink)

In this paper I propose and motivate a logic of the interdefined concepts of making true and control, understood as intensional propositional operators to be indexed to an agent. While bearing a resemblance to earlier logics in the tradition, the motivations, semantics, and object language theory differ on crucial points. Applying this logic to widespread formal theories of agency, I use it as a framework to argue against the ubiquitous assumption that the strongest actions or options available to a given (...) agent must always be pairwise incompatible. The conclusion is that this assumption conflicts with failures of higher order control of agents over their degree or precision of control, failures exhibited by such imperfect agents as ourselves. I discuss models in this setting for understanding such imperfectly self-controlling agents. In an appendix, I prove several relevant results about the logic described, including soundness and completeness both for it and for certain natural extensions. (shrink)

Do essence-based accounts of necessity and Vetter’s potentiality-based account of possibility in fact lead to the same result, viz., a single derived notion of necessity that is interdefinable with possibility or vice versa? And does each approach independently have the ability to reach its desired goal without having to rely on the primitive notion utilized by the other? In this essay, I investigate these questions and Vetter’s responses to them. Contrary to the “separatist” position defended by Vetter, I argue that (...) there are reasons to favor “Combination”, according to which an essence-based account of necessity should be combined with a potentiality-based account of possibility, or vice versa. According to this alternative approach, essentialism and potentialism should be regarded as allies, rather than as competitors, in a theory of derived modality, since both notions are needed in order to give a full account of necessity and possibility. Keywords: possibility, necessity, potentiality, essence, interdefinability, actuality, dependence, artifact-functions. (shrink)

The papers of this special issue are the outcome of a two-­‐day conference entitled “The Second-­‐Person Standpoint in Law and Morality,” that took place at the University of Vienna in March 2013 and was organized by the ERC Advanced Research Grant “Distortions of Normativity.” -/- The aim of the conference was to explore and discuss Stephen Darwall’s innovative and influential second-­‐personal account of foundational moral concepts such as „obligation“, „responsibility“, and „rights“, as developed in his book The Second-­‐Person Standpoint: Morality, (...) Respect, and Accountability (Harvard University Press 2006) and further elaborated in Morality, Authority and Law: Essays in Second-­‐Personal Ethics I and Honor, History, and Relationships: Essays in Second-­‐Personal Ethics II (both Oxford University Press 2013). -/- With the second-­‐person standpoint Darwall refers to the unique conceptual normative space that practical deliberators and agents occupy when they address claims and demands to one another (and to themselves). The very first sentence of Darwall’s examination of the second-­‐personal conceptual paradigm summarizes the gist of the argument succinctly when he claims that “the second-­‐person standpoint [is] the perspective that you and I take up when we make and acknowledge claims on one another’s conduct and will.” (Darwall 2006, 3) The Second-­‐Person Standpoint reminds us that this perspective has been ignored for much too long and that it better take centre stage in any philosophical analysis of moral phenomena, in order to yield a satisfying account of morality as a social institution. The negative part of Darwall’s strategy is to show that neither a purely first-­‐personal approach (represented by Kant and contemporary Kantians), nor a third-­‐personal state-­‐of-­‐affairs-­‐perspective (represented by most varieties of contemporary consequentialism) are capable of accounting for the categorical bindingness characteristic of moral obligation. The latter feat can only be accomplished, and this is the positive part of Darwall’s argument, when those second-­‐ personal normative “felicity conditions” and conceptual presuppositions are acknowledged and spelled out that are already presupposed in every instance of issuing (putatively valid) claims and demands. It is especially second-­‐personal competence and second-­‐personal authority that are the bedrock of these normative conceptual presuppositions, without which engaging in any meaningful address would be impossible. Kantians and utilitarians alike have neglected this critical dimension of the normative landscape. -/- In addition to working out an original conception of moral obligation, the first eight chapters of The Second-­‐Person Standpoint articulate this fundamental insight with respect to a variety of traditional projects in ethical theory such as developing accounts of moral responsibility, rights, dignity, and autonomy. In this context, special emphasis is to be awarded, on the one hand, to Darwall’s refreshing second-­‐personal interpretation of Strawson’s influential account of reactive attitudes and moral responsibility and, on the other, to his historically well-­‐informed reconstruction of Samuel Pufendorf’s often neglected version of an enlightened theistic voluntarism concerning moral authority. Darwall dedicates the second part of The Second-­‐Person Standpoint to the urgent question: how should one respond to the sceptical challenge that expresses utter indifference to the second-­‐person standpoint, including all its multifarious normative presuppositions and implications? What commits us to all this? It is at this point that Darwall, firstly, refines his criticisms of the Kantian, first-­‐personal, paradigm of normativity and emphasizes that only if one already incorporates the second-­‐personal conceptual apparatus into a Kantian analysis of moral obligation is the latter going to yield a convincing account. Secondly, and this certainly is one of the highlights of Darwall’s theory, the Second-­‐Person Standpoint employs themes from Fichte’s philosophy of right in order to strengthen the case for the inescapability of taking up the second-­‐person standpoint of moral obligation. In his contribution for this special issue Darwall further develops his diagnosis that Fichte’s thought offers in many respects a more promising, since more second-­‐personal, foundation of morality than, for example, Kant’s. -/- By now, the impact of Darwall’s second-­‐person standpoint theory has far transcended the confines of contemporary debates on moral obligation. Darwall has put to use the second-­‐personal apparatus to critical engagements with Joseph Raz’s theory of legal authority and Derek Parfit’s convergence arguments for his recent Triple Theory of moral wrongness. The constant theme that unifies all these diverse applications remains the one so impressively presented in The Second-­‐Person Standpoint: without paying attention to the “interdefinable” and “irreducible” circle of (four) foundational second-­‐ personal concepts (valid demand, practical authority, second-­‐personal reason, and accountability), neither superior epistemic status (Raz) nor the identification of optimific states of affairs (Parfit) are potent enough sources to generate anything close to the authority relationships that underlie the idea involved in obligating ourselves and one another. Given all of the above, it comes as no surprise that Darwall reserves his strongest sympathies for a specific ethical theory, namely contractualism. Our commitment to equal basic second-­‐personal authority, that Darwall arrives at through his Fichtean rectification of the Kantian project, leads him to the endorsement of a contractualist paradigm in the spirit of broadly Rawls and Scanlon. -/- . (shrink)

On page 14 of "Reconceptions in Philosophy and Other Arts and Sciences" (section 4 of chapter 1) by Nelson Goodman and Catherine Z. Elgin is written: “Since ‘blue’ and ‘green’ are interdefinable with ‘grue’ and ‘bleen’, the question of which pair is basic and which pair derived is entirely a question of which pair we start with”. This paper points out that an example of interdefinability is also that one about the predicate “grueb”, which is a predicate that applies (...) to an object if the object either is green and examined before time b, or is non-green and not examined before time b. The three predicates “green”, “grueb”, “examined before time b” are interdefinable. According to Goodman, since the predicates “blue” and “green” are interdefinable with the predicates “grue” and “bleen”, “if we can tell which objects are blue and which objects are green, we can tell which ones are grue and which ones are bleen” [pages 12-13 of “Reconceptions in Philosophy and Other Arts and Sciences”]. But , even though the predicates “green” and “examined before time b” are interdefinable, being able to tell if an object is green does not imply being able to tell if an object is examined before time b. The interdefinability among three elements is a type of interdefinability present, for example, also among the logical connectives. Another example of interdefinability is that one about a decidable predicate PD, which is interdefinable with an undecidable predicate PU: therefore even though we can tell whether an object is PD and whether an object is non-PD, we cannot tell whether an object is PU (since PU is an undecidable predicate) and whether an object is non-PU. Although the predicates PD and PU are interdefinable, the possibility to determine whether an object is PD does not imply the possibility to determine whether an object is PU (since PU is an undecidable predicate). Similarly, although the predicates “green” and “grue” are interdefinable, the possibility to determine whether an object is “green” even in absence of temporal information does not imply the possibility to determine whether an object is “grue” even in absence of temporal information. These and other examples about “grue” and “bleen” point out that even in case two predicates are interdefinable, the possibility to apply a predicate P does not imply the possibility to apply a predicate interdefinable with P. And that the possibility to apply the predicate “green” without having temporal information does not imply the possibility to apply the predicate “grue” without having temporal information. According to Goodman, if it is possible to determine if an object is green without needing temporal information, then it is also possible to determine if an object is grue without needing temporal information. But, knowing that an object is both green and grue implies temporal information: in fact, we know by definition that a grue object can only be: 1) either green (in case the object is examined before time t); 2) or blue (in case the object is not examined before time t). Thus, knowing that an object is both grue and green, we know that we are faced with case 1, the case of a grue object that is green and examined before time t. Then the paper points out why the Goodman-Kripke paradox is a paradox about meaning that cannot have repercussions on induction. Finally the paper points out why Hume’s problem is a problem different from Goodman’s paradox and requires a specific treatment. (shrink)