Humean dispositionalism

Humean metaphysics is characterized by a rejection of necessary connections between distinct existences. Dispositionalists claim that there are basic causal powers. The existence of such properties is widely held to be incompatible with the Humean rejection of necessary connections. In this paper I present a novel theory of causal powers that vindicates the dispositionalist claim that causal powers are basic, without embracing brute necessary connections. The key assumptions of the theory are that there are natural types of causal processes, and that manifestations of powers are identified with certain kinds of causal processes. From these assumptions, the modal features of powers are explained in terms of internal relations between powers themselves and the process-types in which powers are manifested.     

Humean nomic essentialism

Humeanism – the idea that there are no necessary connections between distinct existences – and Nomic Essentialism – the idea that properties essentially play the nomic roles that they do – are two of the most important and influential positions in the metaphysics of science. Traditionally, it has been thought that these positions were incompatible competitors. We disagree. We argue that there is an attractive version of Humeanism that captures the idea that, for example, mass essentially plays the role that it actually does in the laws of nature. In this paper we consider the arguments that have lead many to conclude that Humeanism cannot be combined with Nomic Essentialism; we identify the weaknesses in these arguments; and we argue in detail that a version of Humeanism based on a variant of the Best System account of laws captures the key intuitions behind nomic essentialism.     

Humean and Anti‐Humean Internalism About Moral Judgements1

Motivational internalism about moral judgements is the plausible view that accepting a moral judgement is necessarily connected to motivation motivation. However, it conflicts with the Humean theory that motives must be constituted by desires. Simple versions of internalism run into problems with people who do not desire to do what they believe right. This has long been urged by David Brink. Hence, many internalists have adopted more subtle defeasible views, on which only rational agents will have a desire to act. I will argue that more complex versions run into problems with self‐effacing values of the sort Parfit highlights in another context. Such values can only be attained indirectly. After proposing a general account of motivation suited to the internalist thesis, I argue that Anti‐Humeanism is better suited to accommodating the internalist insight.     

Humean Justified Belief

Orthodoxy has it that Hume was a sceptic with respect to justified beliefs about matters of fact. Tom Beauchamp, Alexander Rosenberg and Michael Costa have argued in the face of this traditional interpretation by proposing that Hume held something like an account of justification according to which we do sometimes justifiedly believe matters of fact. I consider the arguments raised by these authors, and argue that though they are correct in suggesting that Hume sketched considerations distinguishing beliefs as more or less justified, they have misunderstood Hume in certain critical respects.     

Humean Moral Knowledge

I develop resources from Hume to account for moral knowledge in the qualified sense developed by Bernard Williams, according to which the proper application of thick ethical terms constitutes moral knowledge. By applying to moral discernment the criteria of the good aesthetic critic, as explained in Hume's “Of the Standard of Taste”, we can see how Humean moral knowledge might be possible. For each of these criteria, an analogous trait would contribute to moral discernment. These traits would enable moral judges to distinguish valid from invalid uses of thick moral terms. The deliverances of such judgments constitute mitigated moral knowledge, as opposed to knowledge in the stricter sense that Hume clearly says cannot be had of moral distinctions. This account has the potential to explain how moral judgments may be valid or invalid without appealing to unique operations of the understanding and how moral knowledge might escape the threat, identified by Williams, of reflective destruction.     

Humean supervenience and best-system laws

David Lewis has proposed an analysis of lawhood in terms of membership of a system of regularities optimizing simplicity and strength in information content. This article studies his proposal against the broader background of the project of Humean supervenience. In particular, I claim that, in Lewis's account of lawhood, his intuition about small deviations from a given law in nearby worlds (in order to avoid backtracking and epiphenomena) leads to the conclusion that laws do not support (certain) counterfactuals and do not bestow nomic necessity on (certain) facts induced by these laws. Support of counterfactuals and nomic necessity, however, are widely held to be important aspects of the concept of lawhood. In my view, therefore, it is not possible to abandon these criteria in any satisfactory analysis of the notion of laws of nature. In a final section, I suggest that the whole project of Humean supervenience is misleading. It does not sufficiently take notice of the important role that reasoning about contrary-to-fact situations plays in modern scientific practice.     

Intrinsic Causation in Humean Supervenience

The paper investigates whether causation is extrinsic in Humean Supervenience (HS) in the sense that being caused by is an intrinsic relation between token causes and effects. The underlying goal is to test whether causality is extrinsic for Humeans and intrinsic for anti‐Humeans in this sense. I argue that causation is typically extrinsic in HS, but it is intrinsic to event pairs that collectively exhaust almost the whole of history. 1     

Wittgensteinian Pragmatism in Humean Concepts

David Hume’s and later Ludwig Wittgenstein’s views on concepts are generally presented as standing in stark opposition to each other. In a nutshell, Hume’s theory of concepts is taken to be subjectivistic and atomistic, while Wittgenstein is metonymic with a broadly pragmatistic and holistic doctrine that gained much attention during the second half of the 20th century. In this essay, I shall argue, however, that Hume’s theory of concepts is indeed much more akin to the views of (post-Tractarian) Wittgenstein and his epigones than many, including Wittgenstein himself, probably might have suspected. As I try to show, Hume anticipates many themes central to Wittgenstein’s writings on language and meaning, and actually takes initial steps towards both an anti-subjectivistic and anti-atomistic psychology and epistemology.     

Kantian Morals and Humean Motives

The idea that moral imperatives are categorical is commonly used to support internalist claims about moral judgment. I argue that the categorical quality of moral requirements shows at most that moral motivation need not flow from a background desire to be moral. It does not show that moral judgments can motivate by themselves, or that amoralism is impossible.     

Humean explanations in the moral sciences

There is an essential tension in Hume's account of explanation in the moral sciences. He holds the familiar (though problematic) view that explanations of action are causal explanations backed by the laws of human nature. But he also tenders a rational and historical model of explanation which has been neglected in Hume studies. Developed primarily in the Essays and put into practice in the History of England, this model holds that explanations in the moral sciences cite agents’ reasons for acting in definite historical situations. Such explanations are context‐dependent, social (not psychological) in content, essentially post hoc, and provide insufficient grounds for prediction. The tension between Hume's two models is considerable, not to say inconsistent. We would best understand him as trying to reconcile the two. Each provides different and equally important kinds of intelligibility. Until this is appreciated, the one‐sided interpretation of Hume as a psychological reductionist and a covering‐law theorist will continue.     

A challenge for Humean externalism

Humean externalism is the view that moral motivation must be explained in terms of desires that are “external” to an agent’s motivationally-inert moral judgments. A standard argument in favor of Humean externalism appeals to the possibility of amoral or morally cynical agents—agents for whom moral considerations gain no motivational traction. The possibility of such agents seems to provide evidence for both the claim that moral judgments are themselves motivationally inert, and the claim that moral motivation has its source in desires external to those judgments. This essay makes the case that, rather than providing a compelling argument in favor of Humean externalism, the argument from amoralism can be recast to set up an important challenge to this view. On one hand, it appears that the central methodological considerations and types of evidence that undergird the externalist argument from amoralism are in tension with a central Humean commitment: namely, that desires can be sources of motivation. While it is possible for Humeans to escape this horn of the dilemma, the most plausible strategies for doing so can be co-opted by internalists to resist the argument’s externalist conclusion.     

Why I'm not a Humean

There is an inconsistency between the access we have to our conscious lives and the Humean thesis of causal generalism. This was first drawn attention to by John Hawthorne, whose argument withstands a number of objections. Nevertheless, it has weaknessess. The first premise must be weakened if Humeans are to be compelled to accept it, and consequently, the second premise will have to be stronger to retain validity. I shore up the case against Humeanism by providing revised premises along with new defences of them. I show why this also provides a lesson for non-Humeans about the epistemology of causal relations.     

In Favor of Being Only Humean

The twin conceptions of (1) natural law as causal structure and (2) explanation as passage from phenomenon to cause, are two sides of a certain philosophical coin, to which I shall offer an alternative – Humean – currency. The Humean alternative yokes together a version of the regularity conception of law and a conception of explanation as passage from one regularity, to another which has it as an instance but of which it is not itself an instance. I will show that the regularity conception of law is the basis of a distinguished branch of physical mechanics; thus the Humean conception of law, like its better-loved rival, enjoys the support of a venerated tradition in mechanical theory – in fact, that strand which culminates in quantum theory. I shall also offer an account of explanatory asymmetry, a natural companion to the Humean conception of explanation as passage from one regularity to another of greater scope, as an alternative to van Fraassen's unsatisfactory account. My account of asymmetry is just as free of reliance on context as it is free of reliance on cause. I shall thus proclaim that explanatory asymmetry is at once a reality deserving of philosophical treatment – one not to be given over to the care of psychology or linguistics – and at the same time susceptible of an account worthy of Hume.     

How to Be a Humean Interventionist

This paper aims to provide Humean metaphysics for the interventionist theory of causation. This is done by appealing to the hierarchical picture of causal relations as being realized by mechanisms, which in turn are identified with lower‐level causal structures. The modal content of invariances at the lowest level of this hierarchy, at which mechanisms are reduced to strict natural laws, is then explained in terms of projectivism based on the best‐system view of laws.