Dilthey’s moral writings have received scant attention over the years, perhaps due to his apparent tendency toward relativism. This essay offers a unified look at Dilthey’s moral writings in the context of his Kantian-styled “Critique of Historical Reason.” I present the Dilthey of the moral writings as an observer of reason in the spirit of Kant, watching practical reason devolve into error when it applies itself beyond the bounds of possible experience. Drawing on moral writings from across Dilthey’s corpus, I (...) retrace Dilthey’s argument that moral theories from Kantianism and utilitarianism to natural law theory suffer significant motivational problems because of the way they transcend the “synthesis” of moral perception. Dilthey’s argument suggests that abstract moral theory is always bound to seem unmotivating and unreal from the standpoint of lived experience, and perhaps that, to avoid this, moral philosophy should confine itself to more situated, case-specific judgments. (shrink)

It is possible for an act to wrongfully harm a person, even if that person is dead. David Boonin explains the puzzle of posthumous harm and examines its ethical implications for such issues as posthumous organ removal, posthumous publication of private documents, damage to graves, and posthumous punishment.

It is notable that all of the leading theories of blame have to employ ungainly fixes to deflect one or more apparent counterexamples. What these theories share is a content‐based theory of blame's nature. Such approaches overlook or ignore blame's core unifying feature, namely, its function, which is to signal the blamer's commitment to a set of norms. In this paper, we present the problems with the extant theories and then explain what signaling is, how it functions in blame, why (...) appealing to it resolves the problems in other theories, what the signaling function implies for a wider range of gray‐area cases, and what the larger significance is of blame's core function for interpersonal interactions in a variety of (non‐moral) normative domains. (shrink)

Several different quantum gravity research programmes suggest, for various reasons, that spacetime is not part of the fundamental ontology of physics. This gives rise to the problem of empirical coherence: if fundamental physical entities do not occupy spacetime or instantiate spatiotemporal properties, how can fundamental theories concerning those entities be justified by observation of spatiotemporally located things like meters, pointers and dials? I frame the problem of empirical coherence in terms of entailment: how could a non-spatiotemporal fundamental theory entail spatiotemporal (...) evidence propositions? Solutions to this puzzle can be classified as realist or antirealist, depending on whether or not they posit a non-fundamental spacetime structure grounded in or caused by the fundamental structure. These approaches place different constraints on our everyday concepts of space and time. Applying lessons from the philosophy of mind, I argue that only realism is both conceptually plausible and suitable for addressing the problem at hand. I suggest a role functionalist version of realism, which is consistent with both grounding and causation, and according to which our everyday concepts reveal something of the true nature of emergent spacetime. (shrink)

Natural/social kind essentialism is the view that natural kind categories, both living and non-living natural kinds, as well as social kinds (e.g., race, gender), are essentialized. On this view, artifactual kinds are not essentialized. Our view—teleological essentialism—is that a broad range of categories are essentialized in terms of teleology, including artifacts. Utilizing the same kinds of experiments typically used to provide evidence of essentialist thinking—involving superficial change (study 1), transformation of insides (study 2) and inferences about offspring (study 3)—we find (...) support for the view that a broad range of categories—living natural kinds, non-living natural kinds and artifactual kinds—are essentialized in terms of teleology. Study 4 tests a unique prediction of teleological essentialism and also provides evidence that people make inferences about purposes which in turn guide categorization judgments. (shrink)

Lady Mary Shepherd holds that the relation of cause and effect consists of the combination of two objects to create a third object. She also holds that this account implies that causes are synchronous with their effects. There is a single instant in which the objects that are causes combine to create the object which is their effect. Hume argues that cause and effect cannot be synchronous because if they were then the entire chain of successive causes and effects would (...) all collapse into a single moment, and succession would not be possible. I argue that Shepherd has a ready, although implicit response, to Hume’s argument. Since causation is combination on Shepherd’s view, she is free to hold that there are times in between those instants in which combinations occur, during which times other, non-combinatory changes occur, which changes account for succession. (shrink)

I argue that the concept of knowledge is a relic of a bygone age, erroneously supposed to do no harm. I illustrate this claim by showing how a concern with knowledge distorts the use of statistical evidence in criminal courts, and then generalize the point to show that this concern hampers our enterprises across the board and not only in legal contexts.

Artificial intelligence has historically been conceptualized in anthropomorphic terms. Some algorithms deploy biomimetic designs in a deliberate attempt to effect a sort of digital isomorphism of the human brain. Others leverage more general learning strategies that happen to coincide with popular theories of cognitive science and social epistemology. In this paper, I challenge the anthropomorphic credentials of the neural network algorithm, whose similarities to human cognition I argue are vastly overstated and narrowly construed. I submit that three alternative supervised learning (...) methods—namely lasso penalties, bagging, and boosting—offer subtler, more interesting analogies to human reasoning as both an individual and a social phenomenon. Despite the temptation to fall back on anthropomorphic tropes when discussing AI, however, I conclude that such rhetoric is at best misleading and at worst downright dangerous. The impulse to humanize algorithms is an obstacle to properly conceptualizing the ethical challenges posed by emerging technologies. (shrink)

Machine learning algorithms may radically improve our ability to diagnose and treat disease. For moral, legal, and scientific reasons, it is essential that doctors and patients be able to understand and explain the predictions of these models. Scalable, customisable, and ethical solutions can be achieved by working together with relevant stakeholders, including patients, data scientists, and policy makers.

In a series of recent papers, David Rose and Jonathan Schaffer use a number of experiments to show that folk intuitions about composition and persistence are driven by pre-scientific teleological tendencies. They argue that these intuitions are fit for debunking and that the playing field for competing accounts of composition and persistence should therefore be considered even: no view draws more support from folk intuitions than its rivals, and the choice between them should be made exclusively on the basis (...) of theoretical considerations. In this paper I argue that Rose and Schaffer draw the wrong conclusion from their own findings, which should instead push us toward sparse views about composition and persistence. Most metaphysicians (including Schaffer himself, and arguably Rose too) should be worried by this result, since they hold views that are flatly incompatible with it. (shrink)

ABSTRACTIn a recent paper, Michael Pardo argues that the epistemic property that is legally relevant is the one called Safety, rather than Sensitivity. In the process, he argues against our Sensitivity-related account of statistical evidence. Here we revisit these issues, partly in order to respond to Pardo, and partly in order to make general claims about legal epistemology. We clarify our account, we show how it adequately deals with counterexamples and other worries, we raise suspicions about Safety's value here, and (...) we revisit our general skepticism about the role that epistemological considerations should play in determining legal policy. (shrink)

The epistemology of self-locating belief concerns itself with how rational agents ought to respond to certain kinds of indexical information. I argue that those who endorse the thesis of Time-Slice Rationality ought to endorse a particular view about the epistemology of self-locating belief, according to which ‘essentially indexical’ information is never evidentially relevant to non-indexical matters. I close by offering some independent motivations for endorsing Time-Slice Rationality in the context of the epistemology of self-locating belief.

Most of our best scientific descriptions of the world employ rates of change of some continuous quantity with respect to some other continuous quantity. For instance, in classical physics we arrive at a particle’s velocity by taking the time-derivative of its position, and we arrive at a particle’s acceleration by taking the time-derivative of its velocity. Because rates of change are defined in terms of other continuous quantities, most think that facts about some rate of change obtain in virtue of (...) facts about those other continuous quantities. For example, on this view facts about a particle’s velocity at a time obtain in virtue of facts about how that particle’s position is changing at that time. In this paper we raise a puzzle for this orthodox reductionist account of rate of change quantities and evaluate some possible replies. We don’t decisively come down in favour of one reply over the others, though we say some things to support taking our puzzle to cast doubt on the standard view that spacetime is continuous. (shrink)

This article outlines a program of ethnoontology that brings together empirical research in the ethnosciences with ontological debates in philosophy. First, we survey empirical evidence from heterogeneous cultural contexts and disciplines. Second, we propose a model of cross‐cultural relations between ontologies beyond a simple divide between universalist and relativist models. Third, we argue for an integrative model of ontology building that synthesizes insights from different fields such as biological taxonomy, cognitive science, cultural anthropology, and political ecology. We conclude by arguing (...) that a program of ethnoontology provides philosophers both with insights about traditional issues such as debates about natural kinds and with novel strategies for connecting philosophy with pressing global issues such as the conservation of local environments and the self‐determination of Indigenous communities. (shrink)

W.D. Ross was the most important opponent of utilitarianism and consequentialism in British moral philosophy between 1861 and 1939. In Rossian Ethics, David Phillips offers the first monograph devoted exclusively to Ross's seminal contribution to moral philosophy. The book has two connected aims. The first is to interpret and evaluate Ross's moral theory. The second is to articulate a distinctive view intermediate between consequentialism and absolutist deontology, which Phillips calls "classical deontology.".

Stawarczyk, Bezdek, and Zacks offer neuroscience evidence for a midline default network core, which appears to coordinate internal, top‐down mentation with externally‐triggered, bottom‐up attention in a push‐pull relationship. The network may enable the flexible pursuance of thoughts tuned into or detached from the current environment.

I provide a fairly systematic analysis of when quantities that are variant under a dynamical symmetry transformation should be regarded as unobservable, or redundant, or unreal; of when models related by a dynamical symmetry transformation represent the same state of affairs; and of when mathematical structure that is variant under a dynamical symmetry transformation should be regarded as surplus. In most of these cases the answer is `it depends': depends, that is, on the details of the symmetry in question. A (...) central feature of the analysis is that in order to draw any of these conclusions for a dynamical symmetry it needs to be understood in terms of its possible extensions to other physical systems, in particular to measurement devices. (shrink)

Perfectionism is an underexplored tradition, perhaps because of doubts about the grounds, content, and implications of perfectionist ideals. Aristotle, J.S. Mill, and T.H. Green are normative perfectionists, grounding perfectionist ideals in a normative conception of human nature involving personality or agency. This essay explores the prospects of normative perfectionism by examining Kant’s criticisms of the perfectionist tradition. First, Kant claims that the perfectionist can generate only hypothetical, not categorical, imperatives. But insofar as the normative perfectionist appeals to the normative category (...) of personality or agency, rather than a biological category of humanity, it can represent perfectionist demands as categorical imperatives. Second, Kant accepts a moral asymmetry in which we aim at our own perfection but at the happiness, rather than the perfection, of others. However, the importance of autonomy in normative perfection explains why the perfectionist should recognize a self/other asymmetry. Indeed, when we see how the normative perfectionist can answer Kant’s criticisms while respecting Kant’s own claims about the connection between rational nature and moral requirements, we can see the basis for a normative perfectionist interpretation of Kant’s own ethical theory. Insofar as Kantians and normative perfectionists both base ethical demands on an appeal to rational nature, they face a common worry that the appeal to rational nature is empty or incomplete. Normative perfectionists have more and less concessive responses to this worry, providing perfectionist explanations of various apparently non-perfectionist goods. Even if we end up being pluralists about the good, perfectionist elements play an important role. Finally, because the normative perfectionist, like the Kantian, grounds its ideals and requirements in a conception of persons as rational agents, it provides a promising account of the rational authority of perfectionist demands. This comparison of normative perfectionist and Kantian essentials gives us reason to take the normative perfectionist tradition seriously. (shrink)

This essay articulates a kind of conservatism that it argues is the most fundamental and important kind of conservatism, viz. existential conservatism, which involves an affirmative and appreciative stance towards the given world. While this form of conservatism can be connected to political conservatism, as seen with Roger Scruton, it need not be, as seen with G. A. Cohen. It is argued that existential conservatism should be embraced whether or not one embraces political conservatism, though it is also shown that (...) existential conservatism imposes constraints on our political thinking. In particular, it is argued that Cohen's ‘luck egalitarianism’ stands at odds with his existential conservatism and that one should be a sufficientarian rather than an egalitarian with regard to economic justice. (shrink)

The literature on counterfactuals is dominated by strict accounts and variably strict accounts. Counterexamples to the principle of Antecedent Strengthening were thought to be fatal to SA; but it has been shown that by adding dynamic resources to the view, such examples can be accounted for. We broaden the debate between VSA and SA by focusing on a new strengthening principle, Strengthening with a Possibility. We show dynamic SA classically validates this principle. We give a counterexample to it and show (...) that extra dynamic resources cannot help SA. We then show VSA accounts for the counterexample if it allows for orderings on worlds that are not almost-connected, and that such an ordering naturally falls out of a Kratzerian ordering source semantics. We conclude that the failure of Strengthening with a Possibility tells strongly against Dynamic SA and in favor of an ordering source-based version of VSA. (shrink)

In Choosing Normative Concepts, Eklund considers a “variance thesis” about our most fundamental (and seemingly most “authoritative”) normative concepts. This thesis raises the threat of an alarming symmetry between different sets of normative concepts. If this symmetry holds, it would be incompatible with “ardent realism” about normativity. Eklund argues that the ardent realist should appeal to the idea of “referential normativity” in response to this challenge. I argue that, even if Eklund is right in his core arguments on this front, (...) many other important challenges for ardent realism remain that also stem from the issues about possible variance in normative concepts that he considers. Following this, I introduce further issues about conceptual variance. These are issues that arise within the context of the framework that Eklund proposes the ardent realist use to confront the variance theses he considers. In particular, the issues concern what normative role as such is, as well as, relatedly, which roles associated with a concept (or predicate) get to count as part of its normative role. The upshot is that issues about conceptual variance in normative domains might be even more challenging for the ardent realist to deal with than Eklund argues. (shrink)

The aim of this article is to develop an understanding-based argument for an explicitly political specification of the concept of race. It is argued that a specification of race in terms of hierarchical social positions is best equipped to guide causal reasoning about racial inequality in the public sphere. Furthermore, the article provides evidence that biological and cultural specifications of race mislead public reasoning by encouraging confusions between correlates and causes of racial inequality. The article concludes with a more general (...) case for incorporating empirical evidence about public reasoning into philosophical debates about competing specifications of the concept of race. (shrink)

Topics in Cognitive Science, Volume 13, Issue 1, Page 128-141, January 2021.

This chapter examines how epistemic norms could be social norms, with a reliance on work on the philosophy and social science of social norms from Bicchieri (on the one hand) and Brennan, Eriksson, Goodin and Southwood (on the other hand). We explain how the social ontology of social norms can help explain the rationality of epistemic cooperation, and how one might begin to model epistemic games.

Philosophers who publish articles that make practical ethical recommendations are thereby offering advice. I consider what obligations they incur in advising. I analyse the giving of advice as a communicative act whose defining and characteristic aim is to secure acceptance of what is advised. Such advice need not be solicited or taken up. I distinguish advice from incitement and threats and specify the scope of the adviser's responsibility for others acting upon the advice. I explore how advice can be bad (...) in how it is given and what is given. I consider, and criticise, various pleas for exemption from the responsibilities of philosophical advising: that advice was not meant; that it wouldn't make any difference anyway; and that the writing was not for those who might act on it. I examine the offering of philosophical advice to policy makers, comparing the views on this of Mary Warnock and Dan Brock. I conclude by asking practical normative philosophers to consider what they should do inasmuch as they are advising. (shrink)

Despite the compelling subjective experience of executive self-control, we argue that ‘consciousness’ contains no top-down control processes. We propose that ‘consciousness’ involves no executive, causal or controlling relationship with any of the familiar psychological processes conventionally attributed to it. In our view all psychological processing and psychological products are non-conscious. In particular, we argue that all ‘contents of consciousness’ are generated by and within non-conscious brain systems in the form of a continuous self-referential personal narrative that is not directed or (...) influenced in any way by the ‘experience of consciousness’. This continuously updated personal narrative arises from selective ‘internal broadcasting’ of outputs from non-conscious executive systems that have access to all forms of cognitive processing, sensory information and motor control. The personal narrative provides information for storage in autobiographical memory and is underpinned by constructs of self and agency, also created in non-conscious systems. The experience of consciousness, is seen as a passive accompaniment to the non-conscious processes of internal broadcasting and the creation of the personal narrative. In this sense personal awareness is analogous to the rainbow which accompanies physical processes in the atmosphere but exerts no influence over them. Though at an individual level it is an end-product created by non-conscious executive systems, the personal narrative serves the powerful evolutionary function of enabling individuals to communicate (externally broadcast) the contents of internal broadcasting. This in turn allows the recipients to generate potentially adaptive strategies, such as predicting the behavior of others and underlies the development of social and cultural structures, that promote species survival. Consequently, it is the capacity to communicate to others the contents of the personal narrative that confers an evolutionary advantage – not the experience of consciousness (personal awareness) itself. (shrink)

Christopher Boorse is very skeptical of there being a pathocentric internal morality of medicine. Boorse argues that doctors have always engaged in activities other than healing, and so no internal morality of medicine can provide objections to euthanasia, contraception, sterilization, and other practices not aimed at fighting pathologies. Objections to these activities have to come from outside of medicine. I first argue that Boorse fails to appreciate that such widespread practices are compatible with medicine being essentially pathocentric. Then I contend (...) that the pathocentric essence, properly understood, does not prohibit physicians from engaging in actions that are not aimed at combating pathologies, but rather supports an internal morality of medicine that allows medical providers to refuse without penalty to engage in practices that promote pathologies. (shrink)

Priority Theory is an increasingly popular view in metaphysics. By seeing metaphysical questions as primarily concerned with what explains what, instead of merely what exists, it promises not only an interesting approach to traditional metaphysical issues but also the resolution of some outstanding disputes. In a recent paper, Louis deRosset argues that Priority Theory isn’t up to the task: Priority Theory is committed to there being explanations that violate a formal constraint on any adequate explanation. This paper critically examines deRosset’s (...) challenge to Priority Theory. We argue that deRosset’s challenge ultimately fails: his proposed constraint on explanation is neither well-motivated nor a general constraint. Nonetheless, lurking behind his criticism is a deep problem for prominent ways of developing Priority Theory, a problem which we develop. (shrink)

A diagnostic process is an investigative process that takes a clinical picture as input and outputs a diagnosis. We propose a method for distinguishing diagnoses that are warranted from those that are not, based on the cognitive processes of which they are the outputs. Processes designed and vetted to reliably produce correct diagnoses will output what we shall call ‘warranted diagnoses’. The latter are diagnoses that should be trusted even if they later turn out to have been wrong. Our work (...) is based on the recently developed Cognitive Process Ontology and further develops the Ontology of General Medical Science. It also has applications in fields such as intelligence, forensics, and predictive maintenance, all of which rely on vetted processes designed to secure the reliability of their outputs. (shrink)

What you ought to do is sensitive to circumstances that are not under your control, or to luck. So plain luck is often morally significant. Still, some of us think that there's no moral luck - that praiseworthiness and blameworthiness are not sensitive to luck. What explains this asymmetry between the luck-sensitivity of ought-judgments and the luck-insensitivity of blameworthiness and praiseworthiness judgments? I suggest an explanation, relying on the analogy to rational luck. I argue that some rational assessments - like (...) how well one plays the hand one's dealt - are luck-insensitive; that we have reason to believe some moral evaluations are analogous to such assessments; and that blameworthiness and praiseworthiness judgments are precisely those luck-insensitive moral evaluations. I also draw an implication regarding agent-regret. (shrink)

Plato in the Meno is standardly interpreted as committed to condition innatism: human beings are born with latent innate states of knowledge. Against this view, Gail Fine has argued for prenatalism: human souls possess knowledge in a disembodied state but lose it upon being embodied. We argue against both views and in favor of content innatism: human beings are born with innate cognitive contents that can be, but do not exist innately in the soul as, the contents of states of (...) knowledge. Content innatism has strong textual support and constitutes a philosophically interesting theory. (shrink)

Subjectivism, desires, reasons, well-being, ethics.

According to Iris Marion Young, a structural injustice occurs when members participating in one or more scheme of social coordination act blamelessly, but the schemes, in combination with norms and background conditions, systematically prevent some from developing their capacities and fulfilling their rights. Because participants are mostly blameless, Young argues that traditional individualist theories of responsibility inadequately address structural injustices. Young instead proposes a social connection theory of responsibility, whereby participants in a structural injustice acquire forward-looking responsibilities to remediate the (...) injustice by organizing, voting, protesting and pressuring institutions. In this paper, I argue that Young’s theory of structural injustice conflates several different moral failings, and that when we correctly disambiguate structural injustices, we can successfully address them with traditional individualist theories of responsibility, both forward-looking and backward-looking. (shrink)

Explores the cosmological and metaphysical thought in the Zhuangzi from the perspective of nothingness. Zhuangzi and the Becoming of Nothingness offers a radical rereading of the Daoist classic Zhuangzi by bringing to light the role of nothingness in grounding the cosmological and metaphysical aspects of its thought. Through a careful analysis of the text and its appended commentaries, David Chai reveals not only how nothingness physically enriches the myriad things of the world, but also why the Zhuangzi prefers nothingness (...) over being as a means to expound the authentic way of Dao. Chai weaves together Dao, nothingness, and being in order to reassess the nature and significance of Daoist philosophy, both within its own historical milieu and for modern readers interested in applying the principles of Daoism to their own lived experiences. Chai concludes that nothingness is neither a nihilistic force nor an existential threat; instead, it is a vital component of Dao’s creative power and the life-praxis of the sage. “Chai provides an elaborate philosophical meontological interpretation of the ontology/cosmology found in the Zhuangzi and the implications for existential practice. It’s a close, careful, but in many respects quite original reading of the classic that contributes significantly to the field of philosophical Daoist studies.” — Geir Sigurðsson, author of Confucian Propriety and Ritual Learning: A Philosophical Interpretation. (shrink)

Virtually everyone believes that we have a duty to rescue fellow human-beings from serious danger when we can do so at small cost to ourselves – and this often forms the starting point for arguments in moral and political philosophy on topics such as global poverty, state legitimacy, refugees, and the donation of body parts. But how are we to explain this duty, and within what limits does it apply? It cannot be subsumed under a wider consequentialist requirement to prevent (...) harm. Nor can it be understood as a duty of social justice that citizens owe to one another under a social contract for mutual protection. Instead it is a sui generis duty of justice that arises from the direct physical encounter between rescuer and victim, and is accordingly limited in scope. However the simplicity of the duty evaporates when multiple potential rescuers are present. Here responsibility lies with the collective as a whole until it is assigned by a fair procedure to individual members. Each individual is required as a matter of justice to discharge that share, but not more, though in the case that others do not comply, he will have a reason, and sometimes a humanitarian duty, to take up the slack. (shrink)

The article discusses the link between freedom, crime and punishment. According to some theorists, crime does not only cause a person to have less freedom; it constitutes, _in and of itself_, a breach of the freedom of others. Punishment does not only cause people to have more freedom, for instance by preventing crimes; it constitutes, _in and of itself_, respect for mutual freedom. If the latter claims are true, crime and punishment must have certain _meanings_ that make them denials/affirmations of (...) freedom irrespective of their consequences. My aim is to show that such an immanent connection between crime/punishment and freedom exists. I do so by explicating the “natural meaning” of crime and punishment. This way of addressing the topic is inspired by Jean Hampton’s use of H. P. Grice’s concept of natural meaning. Expanding on Hampton’s theory, drawing on both H. L. A. Hart and Kant, I argue that crime has the natural meaning of denying freedom, and punishment has the natural meaning of affirming freedom. The paper presents an ideal theory, not a justification for actual criminal justice practices, which in most countries unfortunately fail to instantiate the value of mutual freedom. (shrink)

In this paper, we examine the logics of essence and accident and attempt to ascertain the extent to which those logics are genuinely formalizing the concepts in which we are interested. We suggest that they are not completely successful as they stand. We diagnose some of the problems and make a suggestion for improvement. We also discuss some issues concerning definability in the formal language.

Robert Fogelin argued that the efficacy of our acts of reasons-giving depends on the normalcy of our discourse—to the extent that discourse is not normal disagreements occurring in it are deep; and to the extent that disagreements are deep, they are not susceptible to rational resolution. Against this, Maurice Finocchiaro argues that meta-argumentation can contribute to the rational resolution of disagreements having depth. Drawing upon a competency view of reasons-giving, this article conducts an inventory and audit of meta-argumentation’s resolution resources (...) for disagreements having depth. It concludes that, because Finocchiaro mischaracterizes the relationship between meta-argumentation and normalcy in the underlying discourse, he systematically overstates the rational resolution value of meta-argumentation. To the extent that meta-argumentation can contribute to the rational resolution of disagreements, those disagreements are normal, not deep. According to the competency view, the only way to resolve depth in disagreement is to first re-establish its normalcy. (shrink)

Over the past decade or so, several commentators have called for mission-driven research programs on solar geoengineering, also known as solar radiation management (SRM) or climate engineering. Building on the largely epistemic reasons offered by earlier commentators, this paper argues that a well-designed mission-driven research program that aims to evaluate solar geoengineering could promote justice and legitimacy, among other valuable ends. Specifically, an international, mission-driven research program that aims to produce knowledge to enable well-informed decision-making about solar geoengineering could (1) (...) provide a more effective way to identify and answer the questions that policymakers would need to answer; and (2) provide a venue for more efficient, effective, just, and legitimate governance of solar geoengineering research; while (3) reducing the tendency for solar geoengineering research to exacerbate international domination. Thus, despite some risks and limitations, a well-designed mission-driven research program offers one way to improve the governance of solar geoengineering research relative to the ‘investigator-driven’ status quo. (shrink)

According to dispositionalism about modality, a proposition <p> is possible just in case something has, or some things have, a power or disposition for its truth; and <p> is necessary just in case nothing has a power for its falsity. But are there enough powers to go around? In Yates (2015) I argued that in the case of mathematical truths such as <2+2=4>, nothing has the power to bring about their falsity or their truth, which means they come out both (...) necessary and not possible. Combining this with axiom (T), it is easy to derive a contradiction. I suggested that dispositionalists ought to retreat a little and say that <p> is possible just in case either p, or there is a power to bring it about that p, grounding the possibility of mathematical propositions in their truth rather than in powers. Vetter’s (2015) has the resources to provide a response to my argument, and in her (2018) she explicitly addresses it by arguing for a plenitude of powers, based on the idea that dispositions come in degrees, with necessary properties a limiting case of dispositionality. On this view there is a power for <2+2=4>, without there being a power to bring about its truth. In this paper I argue that Vetter’s case for plenitude does not work. However, I suggest, if we are prepared to accept metaphysical causation, a case can be made that there is indeed a power for <2+2=4>. (shrink)