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Abstract
An apparent antagonism exists between fundamentality-focused mainstream metaphysics such as naturalized metaphysics—a metaphysics inspired and constrained by the findings of our best science—and feminist metaphysics whose subject matter is typically non-fundamental social reality. Taking Karen Barad's agential realism as a case study, this paper argues that these may not be in conflict after all. Agential realism is a metaphysical framework founded on quantum mechanics which shares the characteristic features of naturalized metaphysics. But Barad finds warrant to extend the scope of agential realism all the way to theorizing about our lifeworld as exemplified by her profound influence on feminist new materialism. Thus, this case study indicates that there does not have to be a division between fundamental and feminist metaphysics. The broad intended scope of agential realism is challenged by the success of Newtonian mechanics as an approximation of quantum mechanics, but certain aspects of agential realism promise to be robust under such approximation. If this is so, then Barad provides us with a metaphysics that is naturalized, fundamental, and feminist all at once.

AbstractNaturalized metaphysics aims to establish justified metaphysical claims, where metaphysics is meant to carry its usual significance, while avoiding the traditional methods of metaphysics—a priori reasoning, conceptual analysis, intuitions, and common sense—which naturalized metaphysics argues are not epistemically probative. After offering an explication of what it means to do metaphysics, this paper argues that naturalized metaphysics, at the outset, is hospitable to doing metaphysics. The underdetermination of metaphysics by science, however, changes the picture. Naturalized metaphysics has to break this underdetermination, but the criticism of the traditional methods of metaphysics leaves no resources with which to do so. Naturalized metaphysics must therefore be more restrictive than originally intended to ensure that some metaphysical features avoid underdetermination. In this restrictive naturalized metaphysics, however, metaphysicians are only left the task of surveying the opinions of scientists which, it is argued, does not qualify as doing metaphysics. Thus, to fulfill its promise to save metaphysics, naturalized metaphysics displaces the metaphysician. Furthermore, the attempt to re-employ them via the principle of naturalistic closure is argued to fail. Metaphysicians should therefore not be happier with naturalized metaphysics than they are with the more explicitly eliminative trends in contemporary metametaphysics, such as neo-Carnapian deflationism, despite the promise of naturalized metaphysics, likely to Carnap's dismay, to deliver justified claims about ultimate reality.

AbstractRecent years have seen several studies of metaphysical disputes as disagreement phenomena employing the resources from the research on disagreement in social epistemology. This paper undertakes an analogous study of the metametaphysical disagreement over the substantiveness of metaphysical disputes between inflationists and deflationists. The paper first considers and questions the skeptical argument that the mere existence of the disagreement mandates the suspension of judgement about the substantiveness of metaphysical disputes. Rather, the paper argues that steadfastness in the face of this disagreement is rational, at least for inflationists. Since inflationists are often metaphysicians who were called to this disagreement due to its apparent threat to their first order debates in metaphysics, they can therefore return to these debates in good faith. In contrast, deflationists have no such alternative occupation and the verdict of steadfastness will not alter their engagement in the inflationist/deflationist disagreement: they will continue their attempt to resolve the disagreement to their advantage. Thus, though the verdict of steadfastness is epistemically symmetric between inflationism and deflationism, it induces an asymmetry in the motivation to pursue the inflationist/deflationist disagreement which places the burden of advancing the dialectic of this disagreement with the deflationists while metaphysicians can continue their work as before.

AbstractAccording to the skeptical argument from disagreement, we are mandated to suspend judgement about a question if we discover that others disagree with us. Critics, however, have proposed that this skeptical argument fails if there are not equally many people on either side of the debate: numbers matter. The present paper explicates this as the argument that a group can be more likely to arrive at the correct view by majority rule than the members are on their own. Defenders of the skeptical argument have resisted that numbers matter by observing that if group members depend on each other when forming their beliefs, then the group can be less competent than its members. However, neither side of the debate has accompanied their views with quantitative estimates of how detrimental dependence is for group competence. This paper tries to improve this situation by drawing on jury theorems from social choice theory. The paper cannot settle the debate, but it shows that even the lower limit on group competence will exceed the average individual competence when dependence among voters remains moderate. This should give confidence to those who propose that asymmetry between the disputing parties can counter the skeptical argument from disagreement since being in the majority can thus be higher-order evidence for the disputed proposition.

AbstractDistance, it is often argued, is the only coherent and empirically adequate world-making relation that can glue together the elements of the world. This paper offers entanglement as an alternative world-making relation. Entanglement is interesting since it is consistent even with quantum gravity theories that do not feature space at the fundamental level. The paper thereby defends the metaphysical salience of such non-spatial theories. An account of distance (space) is the predominant problem of empirical adequacy facing entanglement as a world-making relation. A resolution of this obstacle utilizes insights from the Ryu–Takayanagi formula (a holographic relation between entanglement and spacetime) and Susskind and Maldacena's related ER = EPR conjecture (a relation between bell pairs and wormholes). Together these indicate how distance can be recovered from entanglement and thus carves the way for entanglement fundamentalism.

AbstractThe last decade has seen an increasing number of references to quantum mechanics in the humanities and social sciences. This development has in particular been driven by Karen Barad's agential realism: a theoretical framework that, based on Niels Bohr's interpretation of quantum mechanics, aims to inform social theorizing. In dealing with notions such as agency, power, and embodiment as well as the relation between the material and the discursive level, the influence of agential realism in fields such as feminist science studies and posthumanism has been profound. However, no one has hitherto paused to assess agential realism's proclaimed quantum mechanical origin including its relation to the writings of Niels Bohr. This is the task taken up here. We find that many of the implications that agential realism allegedly derives from a Bohrian interpretation of quantum mechanics dissent from Bohr's own views and are in conflict with those of other interpretations of quantum mechanics. Agential realism is at best consistent with quantum mechanics and consequently, it does not capture what quantum mechanics in any strict sense implies for social science or any other domain of inquiry. Agential realism may be interesting and thought provoking from the perspective of social theorizing, but it is neither sanctioned by quantum mechanics nor by Bohr's authority. This conclusion not only holds for agential realism in particular, it also serves as a general warning against the other attempts to use quantum mechanics in social theorizing.