How should the state justify its coercive rules? Public reason liberalism endorses a public justification requirement: Justifications offered for authoritative regulations must be acceptable to all members of the relevant public. However, as a criterion of legitimacy, the public justification requirement is epistemically unreliable: It prioritizes neither the exclusion of false beliefs nor the inclusion of true beliefs in justifications of political rules. This article presents an epistemic alternative to the public justification requirement. Employing epistemological theories of argumentation, we demonstrate (...) how this approach enables assessing the epistemic quality of justifications of political rules, even when the truth is difficult to establish. (shrink)

The End of Materialism: How Evidence of the Paranormal Is Bringing Science and Spirit Together by Charles T. Tart. Philosophy of Personal Identity and Multiple Personality by Logi Gunnarsson. Eusapia Palladino and Her Phenomena by Hereward Carrington. Can the Mind Survive beyond Death? In Pursuit of Scientific Evidence by Satwant K. Pasricha. Morphic Resonance: The Nature of Formative Causation by Rupert Sheldrake. A New Science of Life: The Hypothesis of Formative Causation by Rupert Sheldrake. “Why AI Is a Dangerous Dream,” (...) Opinion, Interview with Noel Sharkey by Nic Fleming. (shrink)

Forces such as increasing globalisation, demographic change, European enlargement, and the emergence of networked organisations stimulate the emergence of new forms of organisation and collaborative working. Mobility, sharing of information and knowledge, and collaboration across organisational networks are key aspects of workplace innovations. New information and communication technologies enable a diversity of future workplace scenarios. However, coping with the human and organisational aspects involved will determine their success or failure. In order to exploit the potential of workplace innovations we, therefore, (...) must better understand their systemic nature. This article, based on the MOSAIC project, explores the potential of mobile and multi-location collaborative workplaces, investigates some future scenarios and roadmaps, and discusses the strategies and research approaches for systemic innovation. (shrink)

In ‘Quiddistic Knowledge’ (Schaffer in Philos Stud 123:1–32, 2005), Jonathan Schaffer argued influentially against the view that the laws of nature are metaphysically necessary. In this reply I aim to show how a coherent and well-motivated form of necessitarianism can withstand his critique. Modal necessitarianism—the view that the actual laws are the laws of all possible worlds—can do justice to some intuitive motivations for necessitarianism, and it has the resources to respond to all of Schaffer’s objections. It (...) also has certain advantages over contingentism in the domain of modal epistemology. I conclude that necessitarianism about laws remains a live option. (shrink)

Jonathan Schaffer (2010) has summoned a new sort of demon – which he calls the debasing demon – that apparently threatens all of our purported knowledge. We show that any debasing skeptical argument must attack the justification condition and can do so only if a plausible thesis about justification is false.

I argue that Schaffer’s recent defence of Spinozan Monism—the thesis that the cosmos is the only substance, or the only fundamental and integrated thing— fails to establish that the universe is uniquely fundamental. In addition, Schaffer’s own defence of his thesis offers the pluralist about fundamentality a model for responding to Schaffer’s criticism of pluralism.

Jonathan Schaffer (2010) has summoned a new sort of demon – which he calls the debasing demon – that apparently threatens all of our purported knowledge. We show that any debasing skeptical argument must attack the justification condition and can do so only if a plausible thesis about justification is false.

According to Schaffer, most of the controversial entities that ontologists debate exist. Schaffer calls this view permissivism and he defends it by appealing to easy arguments for the existence of the entities in question. Schaffer presents several easy arguments, but his easy argument for fictional characters and his easy argument for God play a crucial role in his defence of permissivism. In this paper, I argue that Schaffer doesn’t have the resources to defend his easy argument (...) for fictional characters or his easy argument for God. So, his defence of permissivism fails. (shrink)

Jonathan Schaffer (2004 ) proposes an ingenious amendment to David Lewis's semantics for counterfactuals. This amendment explicitly invokes the notion of causal independence, thus giving up Lewis's ambitions for a reductive counterfactual account of causation. But in return, it rescues Lewis's semantics from extant counterexamples. I present a new counterexample that defeats even Schaffer's amendment. Further, I argue that a better approach would be to follow the causal modelling literature and evaluate counterfactuals via an explicit postulated causal structure. (...) This alternative approach easily resolves the new counterexample, as well as all the previous ones. Up to now, its perceived drawback relative to Lewis's scheme has been its non-reductiveness. But since the same drawback applies equally to Schaffer's amended scheme, this becomes no longer a point of comparative disadvantage. (shrink)

In his insightful and challenging paper, Jonathan Schaffer argues against a distinction I make in The Ant Trap (Epstein 2015) and related articles. I argue that in addition to the widely discussed “grounding” relation, there is a different kind of metaphysical determination I name “anchoring.” Grounding and anchoring are distinct, and both need to be a part of full explanations of how facts are metaphysically determined. Schaffer argues instead that anchoring is a species of grounding. The crux of (...) his argument comes in the last sections of his paper, in his discussion of “exportation,” the relations strategy, and the definitions strategy. I am inclined to agree that Schaffer’s interesting strategies offer the best choices for the philosopher who wants to insist that anchoring is a species of grounding. But both, I will argue, are fatally flawed. I do not take the separation of anchors from grounds lightly, but find the evidence in its favor overwhelming. And once the distinction is made, I find anchoring to be a powerful practical tool in metaphysics. Philosophy and Phenomenological Research, Volume 99, Issue 3, Page 768-781, November 2019. (shrink)

In this paper, I discuss Michael Moore’s and Jonathan Schaffer’s views on the ontology of omissions in context of their stances on the problem of omissive causation. First, I consider, from a general point of view, the question of the ontology of omissions, and how it relates to the problem of omissive causation. Then I describe Moore’s and Schaffer’s particular views on omissions and how they combine with their stances on the problem of omissive causation. I charge Moore (...) and Schaffer with inconsistencies and insufficiencies within their overall theories, and consider their replies. Finally, I propose my own view on the ontology of omissions and solution to the problem of omissive causation. (shrink)

In this paper I put forward and substantiate a possible defensive move on behalf of the relativist about predicates of personal taste that can be used to block a recent contextualist argument raised against the view: the ‘argument from binding’ proposed in Schaffer (). The move consists in adopting Recanati's “variadic functions” apparatus and applying it to predicates of personal taste like ‘tasty’ and experiencer phrases like ‘for John’. I substantiate the account in a basic relativistic framework and reply (...) to several objections to the variadic-functions approach in general and to its application to the expressions at hand. (shrink)

This is a response to Jonathan Schaffer's reply to my criticism of contrastivism.

Does the notion of ground, as it has recently been employed by metaphysicians, point to a single unified phenomenon? Jonathan Schaffer holds that the phenomenon of grounding exhibits the unity characteristic of a single genus. In defense of this hypothesis, Schaffer proposes to take seriously the analogy between causation and grounding. More specifically, Schaffer argues that both grounding and causation are best approached through a single formalism, viz., that utilized by structural equation models of causation. In this (...) paper, I present several concerns which suggest that the structural equation model does not transfer as smoothly from the case of causation to the case of grounding as Schaffer would have us believe. If it can in fact be shown that significant differences surface in how the formalism in question applies to the two types of phenomena in question, Schaffer’s attempt at establishing an analogy between grounding and causation has thereby been weakened and, as a result, the application of the Unity Hypothesis to the case of grounding once again stands in need of justification. (shrink)

This paper deals with Schaffer’s distinction between metaphysical structures, as well as his appeal for revival of neo-Aristotelian approaches that imply ordered structure, based on the criticism of Quine’s method that, in his view, implies flat metaphysical structure. However, although we believe that Schaffer’s distinction between metaphysical structures is an interesting and, basically, acceptable view, we will try to show that Schaffer’s arguments are not convincing enough to persuade us to abandon Quine’s method and adopt the Aristotelian (...) metaphysical model. Moreover, when mistakes that Schaffer makes are corrected and Quine’s method is given due attention, we will see that this can enable us a more tenable interpretation of the concepts that Schaffer speaks of (metaphysical structures), but also – as in his case – to draw certain conclusions that go beyond objectives of classification as such. (shrink)

This is my commentary on Jonathan Schaffer's paper "Evidence for Fundamentality?”; both the paper and comments were presented at the Pacific APA, San Francisco, March 2001. Schaffer argues against the view that there is an ultimate fundamental level to the world. Seeing that quarks and leptons may have an infinite hierarchy of constituents, he claims, “empowers and dignifies the whole of nature” (15). Like Kant he holds that there are as good reasons for believing matter infinitely divisible as (...) composed of fundamental simples. I’m afraid that Schaffer’s provocative arguments have not convinced me. In the paper, I criticize the idea that fundamentalism 'weakens' and 'denigrates' the whole of nature and try to show that an infinite hierarchy can not do the work Schaffer needs it to. I then argue that we should not in fact be agnostic between the two rival hypotheses. (shrink)

Review of: Menachem Fisch; Simon Schaffer (Editors). William Whewell: A Composite Portrait. xiv + 403 pp., bibl., index. Oxford: Clarendon Press of Oxford University Press, 1991. $98.

ABSTRACT I reply to five critics of my book. In particular, I tackle criticisms of my treatment of causation, relative fundamentality, and generativity. I also take on the question of my reliance on a possibly sketchy modal recombination principle, and what grounds the grounding facts.