The coupling-constitution fallacy claims that arguments for extended cognition involve the inference of “x and y constitute z” from “x is coupled to y” and that such inferences are fallacious. We argue that the coupling-constitution fallacy fails in its goal to undermine the hypothesis of extended cognition: appeal to the coupling-constitution fallacy to rule out possible empirical counterexamples to intracranialism is fallacious. We demonstrate that appeals to coupling-constitution worries are problematic by constructing the fallacious argument against the hypothesis of extended (...) cognition. We consider several objections to our argument and find them insufficient to rebut our conclusion. (shrink)

The enactive approach to perception describes experience as a temporally extended activity of skillful engagement with the environment. This paper pursues this view and focuses on prosopagnosia both for the light that the theory can throw on the phenomenon, and for the critical light the phenomenon can throw on the theory. I argue that the enactive theory is insufficient to characterize the unique nature of experience specific to prosopagnosic subjects. There is a distinct difference in the overall process of detection (...) (with respect to eye movement sequence) of familiar and unfamiliar faces in prosopagnosia; in contrast, normal subjects use the same scanning strategy when exploring both kinds of faces despite an obvious difference in qualitative character. In light of this limitation I outline a supplemental view basing sensorimotor contingencies upon the establishment and reaffirmation of regularities within the organism as it engages with the environment. (shrink)

How do we know right from wrong? Do we even have moral knowledge? Moral epistemology studies these and related questions about our understanding of virtue and vice. It is one of philosophy’s perennial problems, reaching back to Plato, Aristotle, Aquinas, Locke, Hume and Kant, and has recently been the subject of intense debate as a result of findings in developmental and social psychology. Throughout the book Zimmerman argues that our belief in moral knowledge can survive sceptical challenges. He also draws (...) on a rich range of examples from Plato’s Meno and Dickens’ David Copperfield to Bernard Madoff and Saddam Hussein. (shrink)

Kant’s moral philosophy both enjoins the acquisition of self-knowledge as a duty, and precludes certain forms of its acquisition via what has become known as the Opacity Thesis. This article looks at several recent attempts to solve this difficulty and argues that they are inadequate. I argue instead that the Opacity Thesis rules out only the knowledge that one has acted from genuine moral principles, but does not apply in cases of moral failure. The duty of moral self-knowledge applies therefore (...) only to one’s awareness of one’s status as a moral being and to the knowledge of one’s moral failings, both in particular actions and one’s overall character failings, one’s vices. This kind of knowledge is morally salutary as an aid to discovering one’s individual moral weakness as well as the subjective ends for which one acts, and in this way for taking up the morally required end of treating human beings as human beings. In this way, moral self-knowledge can be understood as a necessary element of moral improvement, and I conclude by suggesting several ways to understand it thereby as genuinely primary among the duties to oneself. (shrink)

Merold Westphal's book is a wonderful introduction to the history of philosophy.

Peter Singer famously argued in Animal Liberation that almost all of us are speciesists, unjustifiably favoring the interests of humans over the similar interests of other animals. Although I long found that charge compelling, I now find myself having doubts. This article starts by trying to get clear about the nature of speciesism, and then argues that Singer's attempt to show that speciesism is a mere prejudice is unsuccessful. I also argue that most of us are not actually speciesists at (...) all, but rather accept a view I call modal personism. Although I am not confident that modal personism can be adequately defended, it is, at the very least, a philosophical view worthy of further consideration. (shrink)

This book, the product of a lifetime of research by one of the founders of developmental psychology, takes on the powerful assumptions behind these questions- ...

We use Nietzsche’s On the Genealogy of Morality as a touchstone for comprehending Trump’s appeal and victory. Following Nietzsche’s concerns, the most noteworthy puzzle is that of Trump’s peculiar popularity, especially given his impolitic statements and policy proposals that often appear in tension with the interests of his voter base. While Nietzsche’s discussions of power and resentment would seem obvious starting points to examine the success of Trump and Trumpism, we contend that these provide largely superficial and, at best, incomplete (...) explanations. Instead, informed by Nietzsche’s moral psychology, we analyze Trump’s strategy in the context of the instinctual need for self-preservation. Trump’s amplification of this need through his rhetoric and cultivation of negative emotions, including resentment, has led to a revaluation that diminishes humanity. We conclude by drawing out the implications of Nietzsche’s view, revealing a forceful Nietzschean critique of Trump’s methods and values. (shrink)

It is widely held that, in his pre-Critical works, Kant endorsed a necessitation account of laws of nature, where laws are grounded in essences or causal powers. Against this, I argue that the early Kant endorsed the priority of laws in explaining and unifying the natural world, as well as their irreducible role in in grounding natural necessity. Laws are a key constituent of Kant’s explanatory naturalism, rather than undermining it. By laying out neglected distinctions Kant draws among types of (...) natural law, grounding relations, and ontological levels, I show that his early works present a coherent and sophisticated laws-first account of the natural order. (shrink)

000000001. Introduction Call a theory of the good—be it moral or prudential—aggregative just in case (1) it recognizes local (or location-relative) goodness, and (2) the goodness of states of affairs is based on some aggregation of local goodness. The locations for local goodness might be points or regions in time, space, or space-time; or they might be people, or states of nature.1 Any method of aggregation is allowed: totaling, averaging, measuring the equality of the distribution, measuring the minimum, etc.. Call (...) a theory of the good finitely additive just in case it is aggregative, and for any finite set of locations it aggregates by adding together the goodness at those locations. Standard versions of total utilitarianism typically invoke finitely additive value theories (with people as locations). A puzzle can arise when finitely additive value theories are applied to cases involving an infinite number of locations (people, times, etc.). Suppose, for example, that temporal locations are the locus of value, and that time is discrete, and has no beginning or end.2 How would a finitely additive theory (e.g., a temporal version of total utilitarianism) judge the following two worlds? Goodness at Locations (e.g. times) w1:..., 2, 2, 2, 2, 2, 2, 2, 2, 2, ..... w2:..., 1, 1, 1, 1, 1, 1, 1, 1, 1, ..... Example 1 At each time w1 contains 2 units of goodness and w2 contains only 1. Intuitively, we claim, if the locations are the same in each world, finitely additive theorists will want to claim that w1 is better than w2. But it's not clear how they could coherently hold this view. For using standard mathematics the sum of each is the same infinity, and so there seems to be no basis for claiming that one is better than the other.3 (Appealing to Cantorian infinities is of no help here, since for any Cantorian infinite N, 2xN=1xN.). (shrink)

This collection of essays is the first of its kind to focus on the relationship between composition and identity. Twelve original articles--written by internationally renowned scholars and rising stars in the field--argue for and against the controversial doctrine that composition is identity.--Provided by publisher.

Adam Smith sought to explain the persistence of slavery as an institution in Wealth of Nations and Lectures on Jurispridence. In order to accomplish this he also drew on arguments he had developed in the Theory of Moral Sentiments. The result was a sophisticated explanation which bridged economic, psychological, and moral considerations. After presenting Smith’s explanation I will consider a discussion of the moral wrong of slavery in Ottobah Cugoano, the author of the incisive criticism of the slave trade Thoughts (...) and Sentiments on the Evil of Slavery (1787). I will suggest that Cugoano’s account of what is morally wrong in slavery shows an important lacuna in Smith‘s views. (shrink)

Cover -- Half Title -- Title -- Copyright -- Dedication -- Contents -- Acknowledgments -- 1 Preliminaries -- 1.1 What Normative Ethics Is -- 1.2 What Normative Ethics Is Not -- 1.3 Defending Normative Theories -- 1.4 Factors and Foundations -- PART I FACTORS -- 2 The Good -- 2.1 Promoting the Good -- 2.2 Well-Being -- 2.3 The Total View -- 2.4 Equality -- 2.5 Culpability, Fairness, and Desert -- 2.6 Consequentialism -- 3 Doing Harm -- 3.1 Deontology -- (...) 3.2 Thresholds -- 3.3 The Scope of the Constraint -- 3.4 Doing and Allowing -- 3.5 Intending Harm -- 4 Other Constraints -- 4.1 Lying -- 4.2 Promises -- 4.3 Special Obligations -- 4.4 Conventions -- 4.5 Duties to Oneself -- 5 Further Factors -- 5.1 Demanding Too Much -- 5.2 Options -- 5.3 Rights -- 5.4 Interaction -- PART 2 FOUNDATIONS -- 6 Teleological Foundations -- 6.1 Foundational Theories -- 6.2 Egoism -- 6.3 Virtues -- 6.4 Act Consequentialism -- 6.5 Rules -- 7 Deontological Foundations -- 7.1 Contractarianism -- 7.2 Universalizability -- 7.3 The Ideal Observer -- 7.4 Reflection -- 7.5 Foundational Pluralism -- 7.6 Possibilities -- Suggested Readings -- References -- About the Book and Author -- Index. (shrink)

One of the most profound interactions that can occur between people, apologies have the power to heal humiliations, free the mind from deep-seated guilt, remove the desire for vengeance, and ultimately restore broken relationships. With On Apology, Aaron Lazare offers an eye-opening analysis of this vital interaction, illuminating an often hidden corner of the human heart. He discusses the importance of shame, guilt, and humiliation, the initial reluctance to apologize, the simplicity of the act of apologizing, the spontaneous generosity (...) and forgiveness on the part of the offended, the transfer of power and respect between two parties, and much more. Readers will not only find a wealth of insight that they can apply to their own lives, but also a deeper understanding of national and international conflicts and how we might resolve them. The act of apologizing is quite simply immensely fulfilling. On Apology opens a window onto this common occurrence to reveal the feelings and actions at the heart of this profound interaction. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Vessel of Honor: The Virgin Birth and the Ecclesiology of Vatican II by Brian A. GraebeAaron Pidel S.J.Vessel of Honor: The Virgin Birth and the Ecclesiology of Vatican II. By Brian A. Graebe (Steubenville, OH: Emmaus Academic, 2021), 351 pp.Though Mary's undiminished virginity in giving birth (virginitas in partu) was long understood to be an event as miraculous and a teaching as authoritative as her virginity in conceiving (...) (virginitas ante partum), virginitas in partu underwent a kind of existential reinterpretation in the middle of the twentieth century. Authors such as Albert Mitterer and Karl Rahner suggested that, physically speaking, Jesus's birth might have happened like any other, rupturing the hymen, distending the birth canal, and causing Mary pain, albeit not in the spiritually disintegrating way common to postlapsarian humanity. These arguments effectively "unsettled" the traditional understanding of virginitas in partu, leading theologians of the highest stature to distinguish between the doctrine itself and the anatomical aspects attached to it over time. Fr. Brian Graebe has written a fine book arguing that the bodily dimensions of the virgin birth, including the physical "seal" of virginity, belong to the substance of the doctrine. This more inclusive understanding not only does better justice to the data of tradition, he argues, but illuminates the ecclesiology of the Second Vatican Council. The book impresses by its theologically reflective method, its clarity of exposition, [End Page 1106] and its depth of research—especially into the archival and antepreparatory sources of Vatican II.Vessel of Honor responds in effect to Rahner's argument that physical intactness is peripheral to the dogmatic core of Mary's virginity in partu. To show otherwise, Rahner contended, one would need to show that such a doctrine can be found directly in the apostolic teaching, or that it, "being implicitly contained therein, has grown out of the apostolic doctrine, by a legitimate historical, logical, and theological process, as its authentic development" (68–69). If the bodily aspects of this doctrine really belonged to the deposit of faith, in other words, one would need to show how they are implied in the traditio divino-apostolica, as well as how they cohere organically with the rest of the deposit. The two major parts of Vessel of Honor respond in turn to each aspect of Rahner's challenge.The first three chapters argue that Mary's bodily integrity in parturition belongs at least implicitly to the traditio divino-apostolica. Turning first to the postapostolic tradition, Fr. Graebe shows that—apart from the early exceptions of Origen and Tertullian—patristic sources either affirm or strongly imply a miraculous delivery. This constant witness culminates in the Lateran Council (649 AD), which, while not itself an ecumenical council, was received into the magisterium of Pope Martin and affirmed by the Third Council of Constantinople (680 AD). Its teaching that Mary "gave birth without corruption" (incorruptibiliter... genuisse) would be defended by Paschasius, Ratramnus, Thomas Aquinas, and others. This consensus remained undisturbed until the eve of Vatican II.Even at Vatican II, Fr. Graebe argues in the next chapter, the Council Fathers intended to reaffirm the more inclusive idea of virginitas in partu against those who would marginalize its bodily dimensions. Here he really breaks new ground, delving deep into the antepreparatory, preparatory, and conciliar drafting history. He shows convincingly that many of the chief drafters of the final formula—"Our Lord, who did not diminish his mother's virginal integrity but sanctified it..." (Lumen Gentium §57)—saw it as excluding Rahner's and Mitterer's minimalizing interpretations. Drawing on material from the Vatican Apostolic Archives, Fr. Graebe shows that some of the very theologians who voted to omit the pointed phrase "in the birth itself" (in ipsomet partu) did so for tonal rather than substantive reasons.The third chapter argues that Mary's physical integrity in birth is to be believed with divine and Catholic faith, despite the ongoing confusion introduced by Rahner and others. Admittedly, Vatican II did not define but merely reaffirmed the traditional understanding of virginitas in partu. But there are other reasons for including it in the traditio divino-apostolica. [End Page 1107] Drawing heavily... (shrink)

Shelly Kagan argues for a hierarchical position in animal ethics where people count more than animals do, and some animals count more than others. In arguing for his account of morality, Kagan sets out what needs to be done to establish our obligations toward animals and to fulfil our duties to them.

The central focus of Peirce’s work is the development of self-control through engaging in a critical, reflective practice of habit development. This book details that development from a philosophical, pragmatic perspective.

ch.1. Dialekh'ka esteticheskikh i︠a︡vleniĭ.--ch.2. Dialektika iskusstva.--ch.3. Dialektika Khudozhestvennogo razvitii︠a︡.

Prior research on the influence of various ways of framing anthropogenic climate change do not account for the organized ACC denial in the U.S. media and popular culture, and thus may overestimate these frames' influence in the general public. We conducted an experiment to examine how Americans' ACC views are influenced by four promising frames for urging action on ACC —when these frames appear with an ACC denial counter-frame. This is the first direct test of how exposure to an ACC (...) denial message influences Americans' ACC views. Overall, these four positive frames have little to no effect on ACC beliefs. But exposure to an ACC denial counter-frame does significantly reduce respondents' belief in the reality of ACC, belief about the veracity of climate science, awareness of the consequences of ACC, and support for aggressively attempting to reduce our nation's GHG emissions in the near future. Furthermore, as expected by the Anti-Reflexivity Thesis, exposure to the ACC denial counter-frame has a disproportionate influence on the ACC views of conservatives, effectively activating conservatives' underlying propensity for anti-reflexivity. (shrink)

Bayesian Conditionalization is a widely used proposal for how to update one’s beliefs upon the receipt of new evidence. This is in part because of its attention to the totality of one’s evidence, which often includes facts about what one’s new evidence is and how one has come to have it. However, an increasingly popular position in epistemology holds that one may gain new evidence, construed as knowledge, without being in a position to know that one has gained this evidence. (...) These are cases of KK-Failure, cases where one knows p but is not in a position to know that one knows p. This paper assumes that certain KK-Failures are possible and argues that Conditionalization goes wrong in those cases. (shrink)

I reconstruct J. H. Lambert’s views on how practical grounds relate to epistemic features, such as certainty. I argue, first, that Lambert’s account of moral certainty does not involve any distinctively practical influence on theoretical belief. However, it does present an interesting form of fallibilism about justification as well as a denial of a tight link between knowledge and action. Second, I argue that for Lambert, the persistence principle that underwrites induction is supported by practical reasons to believe; this indicates (...) that Lambert is a moderate pragmatist about reasons for theoretical belief. (shrink)

We summarize a new realist, unextravagant interpretation of quantum theory that builds on the existing physical structure of the theory and allows experiments to have definite outcomes but leaves the theory's basic dynamical content essentially intact. Much as classical systems have specific states that evolve along definite trajectories through configuration spaces, the traditional formulation of quantum theory permits assuming that closed quantum systems have specific states that evolve unitarily along definite trajectories through Hilbert spaces, and our interpretation extends this intuitive (...) picture of states and Hilbert-space trajectories to the more realistic case of open quantum systems despite the generic development of entanglement. Our interpretation—which we claim is ultimately compatible with Lorentz invariance—reformulates wave-function collapse in terms of an underlying interpolating dynamics, makes it possible to derive the Born rule from deeper principles, and resolves several open questions regarding ontological stability and dynamics. (shrink)

Does a commitment to mereological universalism automatically bring along a commitment to the controversial doctrine of mereological extensionalism—the view that objects with the same proper parts are identical? A recent argument suggests the answer is ‘yes’. This paper attempts a systematic response to the argument, considering nearly every available line of reply. It argues that only one approach—the mutual parts view—can yield a viable mereology where universalism does not entail extensionalism.

The aim of this paper is to bring recent work on metaphysical grounding to bear on the phenomenon of social construction. It is argued that grounding can be used to analyze social construction and that the grounding framework is helpful for articulating various claims and commitments of social constructionists, especially about social identities, e.g., gender and race. The paper also responds to a number of objections that have been leveled against the application of grounding to social construction from Elizabeth Barnes, (...) Mari Mikkola, and Jessica Wilson. (shrink)

The nomadic Kazaks inhabiting Xinjiang Province, China, retain many aspects of their pre‐Islamic way of life, including the use of methods of traditional healing usually classified under the rubric of "shamanism." These practices are closely related to those in Kazakstan, Mongolia, and other parts of the former Soviet Union.The present study addresses aspects of traditional healing in use among the Xinjiang Kazaks in recent times, and presents a native taxonomy of these practices obtained during recent fieldwork in Xingjiang. Special attention (...) is paid to the use of words, sound, and movement in healing contexts by elders and specialized individuals. (shrink)

I examine the link between extensionality principles of classical mereology and the anti‐symmetry of parthood. Varzi's most recent defence of extensionality depends crucially on assuming anti‐symmetry. I examine the notions of proper parthood, weak supplementation and non‐well‐foundedness. By rejecting anti‐symmetry, the anti‐extensionalist has a unified, independently grounded response to Varzi's arguments. I give a formal construction of a non‐extensional mereology in which anti‐symmetry fails. If the notion of ‘mereological equivalence’ is made explicit, this non‐anti‐symmetric mereology recaptures all of the structure (...) of classical mereology. (shrink)

The thesis that aesthetic testimony cannot provide aesthetic justification or knowledge is widely accepted--even by realists about aesthetic properties and values. This Kantian position is mistaken. Some testimony about beauty and artistic value can provide a degree of aesthetic justification and, perhaps, even knowledge. That is, there are cases in which one can be justified in making an aesthetic judgment purely on the basis of someone else's testimony. But widespread aesthetic unreliability creates a problem for much aesthetic testimony. Hence, most (...) testimony about art does not have much epistemic value. The situation is somewhat different with respect to aesthetic testimony about nature, proofs, and theories. (shrink)

This paper is a systematic exploration of non-wellfounded mereology. Motivations and applications suggested in the literature are considered. Some are exotic like Borges’ Aleph, and the Trinity; other examples are less so, like time traveling bricks, and even Geach’s Tibbles the Cat. The authors point out that the transitivity of non-wellfounded parthood is inconsistent with extensionality. A non-wellfounded mereology is developed with careful consideration paid to rival notions of supplementation and fusion. Two equivalent axiomatizations are given, and are compared to (...) classical mereology. We provide a class of models with respect to which the non-wellfounded mereology is sound and complete. (shrink)

ABSTRACT This article distinguishes nine senses of polarization and provides formal measures for each one to refine the methodology used to describe polarization in distributions of attitudes. Each distinct concept is explained through a definition, formal measures, examples, and references. We then apply these measures to GSS data regarding political views, opinions on abortion, and religiosity—topics described as revealing social polarization. Previous breakdowns of polarization include domain-specific assumptions and focus on a subset of the distribution’s features. This has conflated multiple, (...) independent features of attitude distributions. The current work aims to extract the distinct senses of polarization and demonstrate that by becoming clearer on these distinctions we can better focus our efforts on substantive issues in social phenomena. (shrink)

The dominant theory of parts and wholes – classical extensional mereology – has faced a number of challenges in the recent literature. This article gives a sampling of some of the alleged counterexamples to some of the more controversial principles involving the connections between parthood and identity. Along the way, some of the main revisionary approaches are reviewed. First, counterexamples to extensionality are reviewed. The ‘supplementation’ axioms that generate extensionality are examined more carefully, and a suggested revision is considered. Second, (...) the paper considers an alternative approach that focuses the blame on antisymmetry but allows us to keep natural supplementation axioms. Third, we look at counterexamples to the idempotency of composition and the associated ‘parts just once’ principle. We explore options for developing weaker mereologies that avoid such commitments. (shrink)

In this issue of the American Journal of Bioethics, Kraft and colleagues (2018) provide important insights into the role trust plays in donor's decisions to contribute data and samples to local bio...

Timothy Williamson has argued that a person S ’s total evidence is constituted solely by propositions that S knows. This theory of evidence entails that a false belief can not be a part of S ’s evidence base for a conclusion. I argue by counterexample that this thesis (E = K for now) forces an implausible separation between what it means for a belief to be justified and rational from one’s perspective and what it means to base one’s beliefs on (...) the evidence. Furthermore, I argue that E = K entails the implausible result that there are cases in which a well-evidenced belief necessarily can not serve as evidence for a further proposition. (shrink)

The distribution of moral properties supervenes on the distribution of natural properties, and this provides a puzzle for non-naturalism: what could explain supervenience if moral properties are not natural properties? Enoch claims moral principles explain supervenience. But this solution is incomplete without an account of what moral principles and properties are, and what relation holds between them. This paper begins to develop such an account by exploring analogous issues for Realism about Laws of nature in philosophy of science. Appealing to (...) Mumford’s Central Dilemma for Realism about Laws, I argue that for moral principles to explain supervenience, moral properties must be ontologically dependent on the principles. I suggest that moral properties are relations between moral principles and natural properties. I also explore what it would take to adapt this explanation to a pluralistic theory of morality. Contributory reasons avoid the Cartwright Problem for Laws in a way component forces cannot. (shrink)

In this book, Jerome Kagan takes a provocative look at the mental developments underlying the startling transitions in the child's second year.It is Kagan&...

Typically, discussions of well-being focus almost exclusively on the positive aspects of well-being, those elements which directly contribute to a life going well, or better. It is generally assumed, without comment, that there is no need to explicitly discuss ill-being as well—that is, the part of the theory of well-being that specifies the elements which directly contribute to a life going badly, or less well—since (or so it is thought) this raises no special difficulties or problems. But this common assumption (...) is a mistake, since it is far from obvious how to extend even familiar theories of well-being so as to explicitly cover ill-being as well. This paper acts as an introduction to ill-being, noting some of the interesting and overlooked problems ill-being raises for qualitative hedonism, preference theory, and objective list theories. Particular attention is paid, by way of illustration, to the claim that knowledge is an objective good. Assuming this is so, what exactly is the opposite of knowledge, the objective bad which lowers one’s well-being in the same way that knowledge raises it? (shrink)

Mereological nihilists are faced with a difficult challenge: explaining ordinary talk about material objects. Popular paraphrase strategies involve plurals, arrangements of particles, or fictions. In this paper, a new paraphrase strategy is put forward that has distinct advantages over its rivals: it is compatible with gunk and emergent properties of macro-objects. The only assumption is a commitment to a liberal view of the nature of simples; the nihilist must be willing to accept the possibility of heterogeneous extended simples. The author (...) suggests reinterpreting the parthood and composition relations as modal. According to this paraphrase, composition is a kind of counterpart relation. The author shows that one can accept that mereological nihilism is metaphysically necessary, while endorsing all the claims of classical mereology. As a result, the nihilists are in exactly the same position as the classical mereologist when it comes to explaining talk about ordinary objects, but without the additional ontology. (shrink)

We introduce a realist, unextravagant interpretation of quantum theory that builds on the existing physical structure of the theory and allows experiments to have definite outcomes but leaves the theory’s basic dynamical content essentially intact. Much as classical systems have specific states that evolve along definite trajectories through configuration spaces, the traditional formulation of quantum theory permits assuming that closed quantum systems have specific states that evolve unitarily along definite trajectories through Hilbert spaces, and our interpretation extends this intuitive picture (...) of states and Hilbert-space trajectories to the more realistic case of open quantum systems despite the generic development of entanglement. We provide independent justification for the partial-trace operation for density matrices, reformulate wave-function collapse in terms of an underlying interpolating dynamics, derive the Born rule from deeper principles, resolve several open questions regarding ontological stability and dynamics, address a number of familiar no-go theorems, and argue that our interpretation is ultimately compatible with Lorentz invariance. Along the way, we also investigate a number of unexplored features of quantum theory, including an interesting geometrical structure—which we call subsystem space—that we believe merits further study. We conclude with a summary, a list of criteria for future work on quantum foundations, and further research directions. We include an appendix that briefly reviews the traditional Copenhagen interpretation and the measurement problem of quantum theory, as well as the instrumentalist approach and a collection of foundational theorems not otherwise discussed in the main text. (shrink)