Whether economics warrants public trust depends on the extent to which assertions by economists can be deemed credible. Three examples from microeconomics are examined to assess how the discipline performs in this regard. First, a purely theoretical argument with broad conceptual implications: a quasi-evolutionary argument for rational choice based on the notion of money pumps. Second, a modelling-related claim with significant social implications: economists’ objection to minimum wages based on a simple supply-demand model. Third, methodological choices with implications for all (...) empirical work in microeconomics: the recent proclamation of a ‘credibility revolution’ in applied microeconomics through the use of experimental and quasi-experimental methods. These are assessed against proposed criteria for credibility: epistemic validity, epistemic reliability, and epistemic reflexivity. On the basis of the performance of the discipline against these criteria on the examples considered, I conclude that public distrust of economics and economists can be well-founded. (shrink)

Reluctance to endorse mask wearing to slow transmission of SARS-Cov-2 has been rationalized by the failure of randomized control trials (RCTs) to provide supportive evidence. In contrast, a mechanism-based approach suggests that mask wearing should be expected to reduce transmission: so that contrary evidence from RCTs likely reflects the need to focus policy attention on addressing interacting or mediating factors that offset the basic positive effect. The differing conclusions that result from these two approaches reflect the limitations of RCT-based approaches (...) that are compounded in scenarios, such as pandemics, where urgent decisions are required with limited evidence. (shrink)

The Principle of Sufficient Reason (PSR) holds that, for everything that exists or occurs or holds true, there is a reason why that is the case. I consider three possible ways of relating physics to the PSR: past states as reasons for present states, reasons why the laws of physics take the form that they do, and reasons why there is anything at all. In each case I suggest that the PSR is not the best way of thinking about how (...) and why physics works. -/- Invited reflection for The Principle of Sufficient Reason (Oxford Philosophical Concepts), Eds. F. Amijee and M. Della Rocca (forthcoming 2024). (shrink)

Some modern cosmological models predict the appearance of Boltzmann Brains: observers who randomly fluctuate out of a thermal bath rather than naturally evolving from a low-entropy Big Bang. A theory in which most observers are of the Boltzmann Brain type is generally thought to be unacceptable, although opinions differ. I argue that such theories are indeed unacceptable: the real problem is with fluctuations into observers who are locally identical to ordinary observers, and their existence cannot be swept under the rug (...) by a choice of probability distributions over observers. The issue is not that the existence of such observers is ruled out by data, but that the theories that predict them are cognitively unstable: they cannot simultaneously be true and justifiably believed. (shrink)

We have a much better understanding of physics than we do of consciousness. I consider ways in which intrinsically mental aspects of fundamental ontology might induce modifications of the known laws of physics, or whether they could be relevant to accounting for consciousness if no such modifications exist. I suggest that our current knowledge of physics should make us skeptical of hypothetical modifications of the known rules, and that without such modifications it’s hard to imagine how intrinsically mental aspects could (...) play a useful explanatory role. Draft version of a paper submitted to Journal of Consciousness Studies, special issue responding to Philip Goff’s Galileo’s Error: Foundations for a New Science of Consciousness. (shrink)

I defend the extremist position that the fundamental ontology of the world consists of a vector in Hilbert space evolving according to the Schrödinger equation. The laws of physics are determined solely by the energy eigenspectrum of the Hamiltonian. The structure of our observed world, including space and fields living within it, should arise as a higher-level emergent description. I sketch how this might come about, although much work remains to be done.

Reichenbach’s ‘principle of the common cause’ is a foundational assumption of some important recent contributions to quantitative social science methodology but no similar principle appears in econometrics. Angrist et al. has argued that the principle is necessary for instrumental variables methods in econometrics, and Angrist Krueger builds a framework using it that he proposes as a means of resolving an important methodological dispute among econometricians. Through analysis of instrumental variables methods and the issue of multicollinearity, we aim to show that (...) the relationship of the principle to econometric methods is more nuanced than implied by previous work but nevertheless may make a valuable contribution to the coherence and validity of existing methods. (shrink)

It is commonplace in discussions of modern cosmology to assert that the early universe began in a special state. Conventionally, cosmologists characterize this fine-tuning in terms of the horizon and flatness problems. I argue that the fine-tuning is real, but these problems aren't the best way to think about it: causal disconnection of separated regions isn't the real problem, and flatness isn't a problem at all. Fine-tuning is better understood in terms of a measure on the space of trajectories: given (...) reasonable conditions in the late universe, the fraction of cosmological histories that were smooth at early times is incredibly tiny. This discussion helps clarify what is required by a complete theory of cosmological initial conditions. (shrink)

Cosmological models that invoke a multiverse - a collection of unobservable regions of space where conditions are very different from the region around us - are controversial, on the grounds that unobservable phenomena shouldn't play a crucial role in legitimate scientific theories. I argue that the way we evaluate multiverse models is precisely the same as the way we evaluate any other models, on the basis of abduction, Bayesian inference, and empirical success. There is no scientifically respectable way to do (...) cosmology without taking into account different possibilities for what the universe might be like outside our horizon. Multiverse theories are utterly conventionally scientific, even if evaluating them can be difficult in practice. (shrink)

Graduate-level textbook in general relativity.

It seems natural to ask why the universe exists at all. Modern physics suggests that the universe can exist all by itself as a self-contained system, without anything external to create or sustain it. But there might not be an absolute answer to why it exists. I argue that any attempt to account for the existence of something rather than nothing must ultimately bottom out in a set of brute facts; the universe simply is, without ultimate cause or explanation.

We study the question of how to decompose Hilbert space into a preferred tensor-product factorization without any pre-existing structure other than a Hamiltonian operator, in particular the case of a bipartite decomposition into "system" and "environment." Such a decomposition can be defined by looking for subsystems that exhibit quasi-classical behavior. The correct decomposition is one in which pointer states of the system are relatively robust against environmental monitoring (their entanglement with the environment does not continually and dramatically increase) and remain (...) localized around approximately-classical trajectories. We present an in-principle algorithm for finding such a decomposition by minimizing a combination of entanglement growth and internal spreading of the system. Both of these properties are related to locality in different ways. This formalism could be relevant to the emergence of spacetime from quantum entanglement. (shrink)

To the best of our current understanding, quantum mechanics is part of the most fundamental picture of the universe. It is natural to ask how pure and minimal this fundamental quantum description can be. The simplest quantum ontology is that of the Everett or Many-Worlds interpretation, based on a vector in Hilbert space and a Hamiltonian. Typically one also relies on some classical structure, such as space and local configuration variables within it, which then gets promoted to an algebra of (...) preferred observables. We argue that even such an algebra is unnecessary, and the most basic description of the world is given by the spectrum of the Hamiltonian and the components of some particular vector in Hilbert space. Everything else—including space and fields propagating on it—is emergent from these minimal elements. (shrink)

We provide a derivation of the Born Rule in the context of the Everett (Many-Worlds) approach to quantum mechanics. Our argument is based on the idea of self-locating uncertainty: in the period between the wave function branching via decoherence and an observer registering the outcome of the measurement, that observer can know the state of the universe precisely without knowing which branch they are on. We show that there is a uniquely rational way to apportion credence in such cases, which (...) leads directly to the Born Rule. Our analysis generalizes straightforwardly to cases of combined classical and quantum self-locating uncertainty, as in the cosmological multiverse. (shrink)

Effective Field Theory (EFT) is the successful paradigm underlying modern theoretical physics, including the "Core Theory" of the Standard Model of particle physics plus Einstein's general relativity. I will argue that EFT grants us a unique insight: each EFT model comes with a built-in specification of its domain of applicability. Hence, once a model is tested within some domain (of energies and interaction strengths), we can be confident that it will continue to be accurate within that domain. Currently, the Core (...) Theory has been tested in regimes that include all of the energy scales relevant to the physics of everyday life (biology, chemistry, technology, etc.). Therefore, we have reason to be confident that the laws of physics underlying the phenomena of everyday life are completely known. (shrink)

In Morality & Mathematics, Justin Clarke-Doane argues that it is hard to imagine being "a realist about, for example, the standard model of particle physics, but not about mathematics." I try to explain how that seems very possible from the perspective of a physicist. What is real is the physical world; mathematics starts from descriptions of the natural world and extrapolates from there, but that extrapolation does not imply any independent reality. -/- Submitted to an Analysis Reviews symposium on Clarke-Doane's (...) Morality & Mathematics. (shrink)

We study the conservation of energy, or lack thereof, when measurements are performed in quantum mechanics. The expectation value of the Hamiltonian of a system changes when wave functions collapse in accordance with the standard textbook treatment of quantum measurement, but one might imagine that the change in energy is compensated by the measuring apparatus or environment. We show that this is not true; the change in the energy of a state after measurement can be arbitrarily large, independent of the (...) physical measurement process. In Everettian quantum theory, while the expectation value of the Hamiltonian is conserved for the wave function of the universe, it is not constant within individual worlds. It should therefore be possible to experimentally measure violations of conservation of energy, and we suggest an experimental protocol for doing so. (shrink)

Three experiments explored how hypocrisy affects attributions of criminal guilt and the desire to punish hypocritical criminals. Study 1 established that via perceived hypocrisy, a hypocritical criminal was seen as more culpable and was punished more than a non-hypocritical criminal who committed an identical crime. Study 2 expanded on this, showing that negative moral emotions (anger and disgust) mediated the relationships between perceived hypocrisy, criminal guilt, and punishment. Study 3 replicated the emotion finding from Study 2 using new scenarios where (...) group agents were clearly aware of the hypocrisy of their actions, yet acted anyway. Again, perceived hypocrisy worked through moral emotions to affect criminal guilt and punishment. The current studies provide empirical support for theories relating hypocrisy and moral transgressions to moral emotions, also informing the literature on the role of moral emotions in moral reasoning and legal decision making. (shrink)

The not-self teaching is one of the defining doctrines of Buddhist philosophical thought. It states that no phenomenon is an abiding self. The not-self doctrine is central to discussions in contemporary Buddhist philosophy and to how Buddhism understood itself in relation to its Brahmanical opponents in classical Indian philosophy. In the Pāli suttas, the Buddha is presented as making statements that seem to entail that there is no self. At the same time, in these texts, the Buddha is never presented (...) as saying explicitly that there is no self. Indeed, in the one discourse in which he is asked point blank whether there is a self, he refuses to answer. Thus, the suttas present us with a fundamental philosophical and interpretive problem: if the Buddha denies the existence of the self, why does he not state this denial explicitly? This paper resolves the problem by explaining why and how the Buddha can argue in a way that entails metaphysical anti-realism about the self while also refusing to state explicitly that there is no self. (shrink)

In this paper, I explore how our experience of pain and suffering structure our experience over time. I argue that pain and suffering are not as easily dissociable, in living and in conceptual analysis, as philosophers have tended to think. Specifically, I do not think that there is only a contingent connection between physical pain and psychological suffering. Rather, physical pain is partially constitutive of existential suffering. My analysis is informed by contemporary thinking about pain and suffering as well as (...) Indian Buddhist philosophy. (shrink)

Reichenbach's 'principle of the common cause' is a foundational assumption of some important recent contributions to quantitative social science methodology but no similar principle appears in econometrics. Reiss (2005) has argued that the principle is necessary for instrumental variables methods in econometrics, and Pearl (2009) builds a framework using it that he proposes as a means of resolving an important methodological dispute among econometricians. We aim to show, through analysis of the main problem instrumental variables methods are used to resolve, (...) that the relationship of the principle to econometric methods is more nuanced than implied by previous work, but nevertheless may make a valuable contribution to the coherence and validity of existing methods. (shrink)

The phenomenal overflow thesis states that the content of phenomenally conscious mental states can exceed our capacities of cognitive access. Much of the philosophical and scientific debate about the phenomenal overflow thesis has been focused on vision, attention, and verbal report. My view is that we feel things in our bodies that we don’t always process with the resources of cognitive access. Thinking about the question of phenomenal overflow from the perspective of embodied affect rather than the content of visual (...) experience is the novel contribution of this paper. I argue that we have reason to think that hydranencephalic children are phenomenally conscious but incapable of cognitive access. Further, I claim that we should interpret the reactive behavior of these subjects in terms of a kind of access to content that is distinct from cognitive access, I call this novel form of access ‘affective access.’. (shrink)

I propose a version of quantum mechanics featuring a discrete and finite number of states that is plausibly a model of the real world. The model is based on standard unitary quantum theory of a closed system with a finite-dimensional Hilbert space. Given certain simple conditions on the spectrum of the Hamiltonian, Schrödinger evolution is periodic, and it is straightforward to replace continuous time with a discrete version, with the result that the system only visits a discrete and finite set (...) of state vectors. The biggest challenges to the viability of such a model come from cosmological considerations. The theory may have implications for questions of mathematical realism and finitism. (shrink)

The core thesis of this book is that to understand the implications of incentive structures in modern higher education, we require a deeper understanding of associated issues in the philosophy of science. Significant public and philanthropic resources are directed towards various forms of research in the hope of addressing key societal problems. That view, and the associated allocation of resources, relies on the assumption that academic research will tend towards finding truth – or at least selecting the best approximations of (...) it. The present book builds on, and extends, contributions in philosophy and higher education to argue that this assumption is misplaced: with serious implications for modern higher education and its role in informing societal decisions and government policy. The book develops a philosophical foundation for the analysis of the connection between higher education incentives, scientific progress and societal outcomes. That in turn is used to demonstrate how the current approach to incentivising intellectual and scientific progress is likely not only to fail, but in fact to cause harm on the very dimensions it purports to improve. The arguments presented are illustrated with examples from medicine and academic economics, making the book one of the first to examine issues of scientific progress and social consequences across the human and social sciences. In doing so, it develops a novel critique of modern economics that in turn provides a more philosophically substantive foundation for popular critiques of economics than has existed to date. (shrink)

In this paper, I provide a philosophical analysis of Pāli texts that treat of a special kind of mental event called bhavaṅga citta. This mental event is a primal sentient consciousness, a passive form of basal awareness that individuates sentient beings as the type of being that they are. My aims with this analysis are twofold, one genealogical and reconstructive, the other systematic. On the genealogical and reconstructive side, I argue for a distinction between two kinds of continuity that are (...) at work in explaining the temporal structure of experience in Pāli Buddhist philosophy. Call these two forms of continuity ‘diachronic’ and ‘affective-motivational’ continuity, respectively. In my analysis of these two forms of continuity, I will focus on the coherence of bhavaṅga citta in its Abhidhammic context. My contention is that the commentarial account of bhavaṅga citta has the resources to explain diachronic continuity but struggles to give a fully workable account of affective-motivational continuity. I argue that the novel view of mental continuity offered by the early twentieth century Burmese monastic exegete Ledi Sayadaw offers another intriguing account of mental continuity, one that can help to explain affective-motivational continuity. Systematically speaking, in spelling out the dynamics of this distinction between types of mental continuity in connection with bhavaṅga, I offer a cross-cultural philosophical analysis of the deep structure of the mind and how affective processes below the threshold of ordinary habits of attention have a profound conditioning effect on our conscious relationship with the world. (shrink)

In this paper, I explore a debate between some Indian Buddhist schools regarding the nature of the underlying tendencies or anusaya-s. I focus here primarily on the ninth chapter of Kathāvatthu’s representation of a dispute about whether an anusaya can be said to have intentional object. I also briefly treat of Vasubandhu’s defense of the Sautrāntika view of anuśaya in the opening section of the fifth chapter his Abhidharmakośabhāṣyam. Following Vasubandhu, I argue against the Thervādin Abhidharmikas that the underlying tendencies (...) (anusaya-s) can be identified with their active manifestations (pariyuṭṭhāna). Etymologically, the notion of anusaya denotes a kind of latency, dormancy or otherwise ‘below the surface’ propensity. It can literally be translated as ‘that which lies or dwells beneath or alongside’. I will translate the term as ‘underlying tendency’, but philosophically speaking, it is most important to understand that the notion of anusaya refers to dispositions that condition current experience in a tacit way. The task of a philosophical account of the anusaya-s is to explain how their implicit conditioning influence shapes occurrent mental activity. The Indian Buddhist philosophers exercised an enormous amount of energy in attempting to explain this relation. A thorough examination of this dialectic has two important fruits to bear. The first is that the Buddhists can help us explain in precise detail how the mind is affectively layered. That is, they have a plausible account of how the mind is both responsive in real time to the objects it encounters in the world, while at the same time being tacitly conditioned by its own history of affective bias. Indeed, as we will see, the Buddhists were deeply concerned with how processes of affective bias were operating at the deepest levels of the mind and how we ought to conceive of their influence on our ordinary processes of perception and cognition. Second, this local position within the Buddhist milieu is indicative of a wider propensity in Buddhist philosophy to blend analyses of affectively-biased intentions and causation. I submit that this blending could be helpful in a more global for contemporary discussions of the mind in philosophy and science. (shrink)

This paper concerns the way that phenomenal consciousness helps us to know things about the world. Most discussions of how consciousness contributes to our store of knowledge focus on propositional knowledge. In this paper, I recast the problem in terms of practical knowledge by reconstructing some neglected strands of argument in William James’s analyses of bodily affect and habitual action in The Principles of Psychology. I will argue that my reading of James’s view provides a plausible account of how phenomenally (...) conscious states feed practical knowledge. I will also show that my reconstruction of James view harmonizes well with recent empirical findings. (shrink)

In catechesis for adolescents seeking confirmation in the Roman Catholic Church, a dualistic bias unconsciously dichotomizes objective doctrine and subjective psychology. This is problematic because if a catechist does not communicate mind-independent truth, no seed of Catholic faith will have been planted in a student. At the same time, if a catechist does not affirm a student's subjectivity, the seed cannot find receptive soil. I believe the key to integrating these intellectual and affective elements – the head and the heart (...) – lies in the link between what Bernard Lonergan calls authentic subjectivity and objectivity. Catechists can appeal to this link by embracing the moral responsibility to ‘know our knowing,’ becoming aware of our dualistic bias and judging our faith experiences according to objective standards of knowledge. (shrink)

The ideology of evidence-base medicine (EBM) has dramatically altered the way we think, conceptualize, philosophize and practice medicine. One of its major pillars is the appraisal and classification of evidence. Although important and beneficial, this process currently lacks detail and is in need of reform. In particular, it largely focuses on three key dimensions (design, [type I] alpha error and beta [type II] error) to grade the quality of evidence and often omits other crucial aspects of evidence such as biological (...) plausibility, reproducibility, generalizability, temporality, consistency and coherence. It also over-values the randomized trial and meta-analytical techniques, discounts the biasing effect of single centre execution and gives insufficient weight to large and detailed observational studies. Unless these aspects are progressively included into systems for grading, evaluating and classifying evidence and duly empirically assessed (according to the EBM paradigm), the EBM process and movement will remain open to criticism of being more evidence-biased than evidence-based. (shrink)

In this paper, I provide a philosophical analysis of Pāli texts that treat of a special kind of mental event called bhavaṅga citta. This mental event is a primal sentient consciousness, a passive form of basal awareness that individuates sentient beings as the type of being that they are. My aims with this analysis are twofold, one genealogical and reconstructive, the other systematic. On the genealogical and reconstructive side, I argue for a distinction between two kinds of continuity that are (...) at work in explaining the temporal structure of experience in Pāli Buddhist philosophy. Call these two forms of continuity ‘diachronic’ and ‘affective-motivational’ continuity, respectively. In my analysis of these two forms of continuity, I will focus on the coherence of bhavaṅga citta in its Abhidhammic context. My contention is that the commentarial account of bhavaṅga citta has the resources to explain diachronic continuity but struggles to give a fully workable account of affective-motivational continuity. I argue that the novel view of mental continuity offered by the early twentieth century Burmese monastic exegete Ledi Sayadaw (1846–1923) offers another intriguing account of mental continuity, one that can help to explain affective-motivational continuity. Systematically speaking, in spelling out the dynamics of this distinction between types of mental continuity in connection with bhavaṅga, I offer a cross-cultural philosophical analysis of the deep structure of the mind and how affective processes below the threshold of ordinary habits of attention have a profound conditioning effect on our conscious relationship with the world. (shrink)

This chapter contains sections titled: Notes.

To examine the influence of hypnotic suggestibility testing as a source of individual differences in hypnotic responsiveness, we compared behavioral and subjective responses on three scales of hypnotic suggestibility: The Harvard Group Scale of Hypnotic Susceptibility, Form A . Harvard Group Scale of Hypnotic Susceptibility. Berlin: Consulting Psychologists Press); the Carleton University Responsiveness to Suggestion Scale . The Carleton University Responsiveness to Suggestion Scale: Normative data and psychometric properties. Psychological Reports, 53, 523–535); and the Group Scale of Hypnotic Ability . (...) The Group Scale of Hypnotic Ability and response booklet. Australian Journal of Clinical and Experimental Hypnosis, 27, 20–31). Behavioral and subjective responses to the CURSS were significantly different than those on the HGSHS: A and GSHA. More participants were classified as “low suggestible” on the CURSS and they reported subjective experiences more similar to everyday mentation. Attitudes and expectancies of participants who received the GSHA were less predictive of responding, but rates of responding and subjective experiences were similar on the GSHA and the HGSHS: A. Discussion focuses on implications for the use of group hypnotic suggestibility scales. (shrink)

Around 1800, print culture became a particularly rich source for metaphors about thinking as well as writing, nowhere more so than in the German tradition of _Dichter und Denker_. Goethe, Jean Paul, and Hegel used the _preface_ in order to reflect on the problems of writing itself, and its interpretation. If Sterne teaches us that a material book enables mind games as much as it gives expression to them, the Germans made these games more theoretical still. Weaving in authors from (...) Antiquity to Agamben, Williams shows how European–and, above all, German–Romanticism was a watershed in the history of the preface. The playful, paradoxical strategies that Romantic writers invented are later played out in continental philosophy, and in post-Structuralist literature. The preface is a prompt for playful thinking with texts, as much as it is conventionally the prosaic product of such an exercise. (shrink)

The authors investigated whether college students possess abstract rules concerning the applicability conditions for three spatial diagrams that are important tools for thinking—matrices, networks, and hierarchies. A total of 127 students were asked to select which type of diagram would be best for organising the information in each of several short scenarios. The scenarios were written using three different story contexts: (a) neutral, presenting a real-life situation but not cueing a particular representation; (b) abstract, presenting only variable names and relations; (...) and (c) incongruent, in which the context and informational structure cued different representations. The results indicated above-chance performance on the abstract scenarios, as well as comparable performance on the abstract and neutral context scenarios. In a follow-up study in which eight students thought out loud while selecting diagrams for the abstract scenarios, there were almost no references to concrete examples. The results of these studies suggest that students possess abstract rules concerning the applicability conditions for matrices, networks, and hierarchies. (shrink)

In this paper I attempt to discover the object of Aristotle’s God’s νόησις in Metαphysics Λ.9. In Section I, I catalogue existing interpretations and mention the two key concepts of (i) God’s substancehood and (ii) his metaphysical simplicity. In Section II, I explore the first two aporiae of Λ.9 – namely (1) what God’s οὐσία is and (2) what God intelligizes. In Section III, I show how Aristotle solves these aporiae by contending that God’s οὐσία is actually intelligizing, and being (...) determined to do so by himself, and that the object of his νόησις is himself, such that he intelligizes his own οὐσία, and I explain what this means. In Section IV, I present the second pair of aporiae in Λ.9 and show how, by solving these, Aristotle clarifies the position arrived at in Section III. Lastly, in Section V, I present the final aporia and its solution, and conclude that Aristotle’s God is a radically-unified Narcissus-God who intelligizes his own οὐσία. (shrink)

A longstanding issue in attempts to understand the Everett (Many-Worlds) approach to quantum mechanics is the origin of the Born rule: why is the probability given by the square of the amplitude? Following Vaidman, we note that observers are in a position of self-locating uncertainty during the period between the branches of the wave function splitting via decoherence and the observer registering the outcome of the measurement. In this period it is tempting to regard each branch as equiprobable, but we (...) argue that the temptation should be resisted. Applying lessons from this analysis, we demonstrate (using methods similar to those of Zurek's envariance-based derivation) that the Born rule is the uniquely rational way of apportioning credence in Everettian quantum mechanics. In doing so, we rely on a single key principle: changes purely to the environment do not affect the probabilities one ought to assign to measurement outcomes in a local subsystem. We arrive at a method for assigning probabilities in cases that involve both classical and quantum self-locating uncertainty. This method provides unique answers to quantum Sleeping Beauty problems, as well as a well-defined procedure for calculating probabilities in quantum cosmological multiverses with multiple similar observers. (shrink)

This article examines whether vision in Plato’s Timaeus can realize its primary function of permitting humans to stabilize their misaligned orbits of intelligence by getting to know the universe’s orbits as revealed through the heavenly bodies’ movements. I consider a concern that Timaeus, while seemingly requiring nocturnal vision for this purpose, appears to preclude its possibility, thereby threatening the dialogue’s internal coherence. I then argue that Timaeus has the resources to overcome this worry and to provide a philosophically cogent account (...) of nocturnal vision. (shrink)

1. Although there has been renewed interest in Anne Conway’s (1631–1679) sole published philosophical treatise, The Principles of the Most Ancient and Modern Philosophy, scholars have so far largel...

Scholarship on Aristotle’s theory of visual perception has traditionally held that Aristotle had a single, static, conception of light and that he believed that illumination occurred prior to and independent of the actions of colours. I contend that this view precludes the medium from becoming actually transparent, thus making vision impossible. I here offer an alternative to the traditional interpretation, using contemporary conceptual tools to make good philosophical sense of Aristotle’s position. I call my view the ‘ecological’ interpretation. It postulates (...) two conceptions of light: non-visible mobile propagated light and visible static illumination produced by the interaction of propagated light with the environment’s coloured textured surfaces. I argue that these contemporary conceptual tools can find a foothold in and consistently enrich Aristotle’s extant position and that, with their aid, we can restore coherence to his theories of light and vision. (shrink)

In this paper, I critically reconstruct the development of Merleau-Pontyan phenomenology and “radical embodied cognitive science” out of Berlin-School Gestalt theory. I first lay out the basic principles of Gestalt theory and then identify two ways of revising that theory: one route, followed by enactivism and ecological psychology, borrows Gestaltist resources to defend a pragmatic ontology. I argue, however, that Merleau-Ponty never endorses this kind of ontology. Instead, I track his second route toward an ontology of “flesh.” I show how (...) Merleau-Ponty’s arguments for this ontology depend upon criticisms of Gestalt Psychology to which radical embodied cognitive science remains vulnerable, and show that it leads him to a romantic philosophy of nature. (shrink)

In this paper I wish to offer some reflections on a possible solution to the perennial problem of materialism and idealism as mutually exclusive worldviews. The problem will be set in the context of the recent work of David Bohm and Edgar Morin, two leading representatives of the new science.