Juan Comesaña and Carolina Sartorio have recently proposed a diagnosis of what goes wrong in apparently illegitimate cases of ‘bootstrapping’ one’s way toexcessively easy knowledge. They argue that in such cases the bootstrapper bases at least one of her beliefs on evidence that does not evidentially support the proposition believed. I explicate the principle that underlies Comesaña and Sartorio’s diagnosis of such cases and show that their account of what goes wrong in such cases is mistaken.

Some philosophers have claimed that causally determined agents are not morally responsible because they cannot make a difference in the world. A recent response by philosophers who defend the compatibility of determinism and responsibility has been to concede that causally determined agents are incapable of making a difference, but to argue that responsibility is not grounded in difference making. These compatibilists have rested such a claim on Frankfurt cases—cases where agents are intuitively responsible for acts that they couldn’t have failed (...) to perform. This essay argues, first, that the intuitive plausibility of the idea that responsibility is grounded in difference making is not completely put to rest by Frankfurt cases, even if those cases successfully show that responsibility is not grounded in difference making in the sense of access to alternative possibilities of action. It then goes on to develop a different compatibilist strategy, one according to which responsibility is grounded in difference making, but the type of difference making it is grounded in does not require access to alternative possibilities. Indeed, it is a form of difference making that is clearly compatible with determinism. (shrink)

According to evidentialists about inferential justification, an agent’s evidence—and only her evidence—determines which inferences she would be justified in making, whether or not she in fact makes them. But there seem to be cases in which two agents would be justified in making different inferences from a shared body of evidence, merely in virtue of the different competences those agents possess. These sorts of cases suggest that evidence does not have the pride of place afforded to it by evidentialists; competence (...) seems to play at least as important a role as evidence in explaining which inferences an agent would be justified in making. -/- In this paper, I consider how two versions of evidentialism about inferential justification might try to account for the role of competence in inference, and I present problems specific to each version. I end by sketching and briefly defending an alternative to these evidentialist views, “inferential dogmatism”. While dogmatic views have gotten some attention in debates around non-inferential justification, they have largely been ignored in debates around inferential justification and are to that extent novel. (shrink)

If one is interested in reasoning counterfactually within a physical theory, one cannot adequately use the standard possible world semantics. As developed by Lewis and others, this semantics depends on entertaining possible worlds with miracles, worlds in which laws of nature, as described by physical theory, are violated. Van Fraassen suggested instead to use the models of a theory as worlds, but gave up on determining the needed comparative similarity relation for the semantics objectively. I present a third way, in (...) which this similarity relation is determined from properties of the models contextually relevant to the truth of the counterfactual under evaluation. After illustrating this with a simple example from thermodynamics, I draw some implications for future work, including a renewed possibility for a viable deflationary account of laws of nature. (shrink)

It has been claimed that difference-making plays important roles in both metaphysics and epistemology. The idea is that facts often make a difference to other facts. Thus, causes are said to make a difference to their effects, and the world is thought to make a difference to what is believed. One way to cash out this idea is in terms of the notion of counterfactual dependence between the facts in question. It has recently been objected by some philosophers, however, that (...) the counterfactual-dependence account misrepresents the difference-making idea, prompting them to offer a different, weaker construal of the idea in question, which, they claim, illuminates a number of problems in both epistemology and metaphysics. This article, while acknowledging that the difference-making idea is a genuine constraint on some of our concepts, challenges the claim that the weaker interpretation has significant philosophical potentials and, having delineated its real function, spells out the lessons that should be drawn from its failure. (shrink)

The idea that truth is the aim of justification is one that is often defended by theorists who uphold different views about the nature of epistemic justification. Despite its prevalence, however, it is not quite clear how one is to cash out the metaphor that justification aims at truth. Some theorists, for example, have objected that the thesis would leave no room for justified false beliefs and unjustified true beliefs. In this paper, I offer an account of what it is (...) for justification to aim at truth using the recently revived idea of difference-making according to which facts often make a difference to other facts. It will be argued that, thus understood, the thesis can illuminate a number of controversial debates in epistemology and that, given its explanatory power, it has a lot to recommend it. (shrink)