A careful, theoretical clarification of gender roles has only recently begun in social and political philosophy. It is the aim of the following piece to reveal that an analysis of women’s traditional position - her distinctive activities, labor and surrounding sense of ‘mine’ - can not only make valuable contributions towards clarifying traditional property disputes, but may even provide elements for a new conception of ownership. By way of illustration, the article focusses on the influential work of John Rawls and (...) argues that - when Rawls’s own analysis and principles of justice are supplemented by an account of what is here called ‘reproductive labor’ - his theory in fact tends to a form of democratic socialism. Stated somewhat differently, my aim is to shift the terms of the property debate as posed by Rawls fromwithinhis own position. I hope to show that the real ownership question which now emerges is no longerwhether‘justice as fairness’ countenances a private property or socialist form of democracy, but what preciseformsuch a socialism should take. (shrink)

The Newman problem is a fundamental problem that threatens to undermine structural assumptions and structural theories throughout philosophy and science. Here, we consider the problem in the context of consciousness science. We introduce and discuss the problem, and explain why it is detrimental not only to structuralist assumptions, but also to theories of consciousness, if left unconsidered. However, we show that if phenomenal spaces, and mathematical structures of conscious experience more generally, are understood in the right way, the Newman problem (...) does not arise. The upshot of our paper is that consciousness science needs to be careful in which definition of structure to consider, but if it is, the Newman problem disappears. (shrink)

We demonstrate that if consciousness is relevant for the temporal evolution of a system's states—that is, if it is dynamically relevant—then AI systems cannot be conscious. That is because AI systems run on CPUs, GPUs, TPUs or other processors which have been designed and verified to adhere to computational dynamics that systematically preclude or suppress deviations. The design and verification preclude or suppress, in particular, potential consciousness-related dynamical effects, so that if consciousness is dynamically relevant, AI systems cannot be conscious.

Computational functionalism posits that consciousness is a computation. Here we show, perhaps surprisingly, that it cannot be a Turing computation. Rather, computational functionalism implies that consciousness is a novel type of computation that has recently been proposed by Geoffrey Hinton, called mortal computation.

The scientific study of consciousness, also referred to as consciousness science, is a young scientific field devoted to understanding how conscious experiences and the brain relate. It comprises a host of theories, experiments, and analyses that aim to investigate the problem of consciousness empirically, theoretically, and conceptually. This thesis addresses some of the questions that arise in these investigations from a formal and mathematical perspective. These questions concern theories of consciousness, experimental paradigms, methodology, and artificial consciousness. -/- Regarding theories of (...) consciousness, the thesis contributes to the understanding of the mathematical structure that some of the formal theories in the field propose. The work presented here targets the theory of consciousness known as Integrated Information Theory (IIT) and the neuroscientific theory known as Predictive Processing Theory or Free Energy Principle in its Active Inference form (AI-PP). The thesis provides axiomatic definitions of the mathematical structures that constitute these theories, and uses these definitions to address some of the open questions surrounding the theories. For AI-PP, this includes a rigorous derivation of the formula for Active Inference via Free Energy minimisation and a proof of compositionality of Free Energy. For IIT, this includes resolutions of some of the criticisms of IIT's formal scope and applications, but also the identification of new issues that concern the formalism and its derivation. When possible, the definitions are provided in the mathematical framework of category theory. -/- Regarding experiments, the thesis addresses the main paradigm for testing and falsifying theories of consciousness currently applied in the field. This paradigm consists of comparing the conscious experience that a theory predicts with the conscious experience that is inferred from behavioural data or report by use of measures of consciousness. The thesis provides a formal model of this paradigm and shows that under a certain condition—if inference and prediction are independent—, any minimally informative theory of consciousness can always be falsified. This is deeply problematic since the field’s reliance on report or behaviour to infer conscious experiences, in conjunction with the general structure of most contemporary theories of consciousness, implies such independence. This observation provides the exact formal underpinning of the well-known unfolding argument. The thesis analyses the origin of the problem and identifies precisely which changes are required to avoid this problem in future research. The thesis furthermore shows that the problem of falsifying theories of consciousness, and of empirical comparisons of theories of consciousness more generally, follows from a pervasive closure paradigm in consciousness science, that consists of taking a neuroscientific account of the brain as input to a theory of consciousness, so as to explain what consciousness is, without allowing for modifications or adaptations of the neuroscientific account that would accommodate consciousness as part of the brain's functioning. As is shown in the thesis, this paradigm has implications that point to a fundamental need of revision. -/- Regarding methodological and conceptual questions, the thesis contributes to the foundations of structural research in consciousness science. Structural research aims to use mathematical structures or mathematical spaces, instead of verbal descriptions or simple categorisations, to represent conscious experiences scientifically, for example when building theories of consciousness, or when exploring new empirical avenues to measure consciousness. Despite considerable advances in this realm, there was, prior to this thesis, no explicit definition of what a mathematical structure of conscious experience should be; that is, how the attribution of mathematical structure to conscious experiences should be systematically understood. Perhaps the most important contribution of this thesis to the field is to propose such a definition. The definition, a structural concept, extends existing approaches wherever available, and provides a basis for developing a common formal language to study consciousness, bridging developments as far apart as psychophysics and phenomenology. In addition, and independently of this proposal, the thesis offers a critical analysis of which metaphysical premises need to be presumed in structural research, whether the use of particular formal tools (such as structure-preserving mappings or homomorphisms) is justified, and how structural theories of consciousness could otherwise be built in the first place. An attempt to expand the results from consciousness to more general problems in philosophy of science is made in the context of the well-known Newman problem. -/- Regarding the question of artificial consciousness—can AI feel?—, the thesis contributes two results that take the form of no-go theorems, as known from physics. The first no-go theorem shows that if consciousness is relevant for the temporal evolution of a system's states—if it is dynamically relevant—, then contemporary AI systems cannot be conscious. That is because AI systems run on CPUs, GPUs, TPUs or other processors which have been designed and verified to adhere to computational dynamics that systematically preclude or suppress deviations. The second no-go theorem is situated in the context of computational functionalism, a view which posits that consciousness is a computation. The theorem shows that if computational functionalism holds true, consciousness cannot be a Turing computation. Rather, it must be a novel type of computation that has recently been proposed by Geoffrey Hinton, called mortal computation. -/- This thesis is part of a global effort to pioneer a mathematical perspective in consciousness science, now called Mathematical Consciousness Science. The hope behind the research carried out in this PhD is to illustrate the power and usefulness of mathematical approaches in different areas of consciousness science, and in doing so, to lay the foundations for future mathematical work that complements and supports empirical and theoretical work in the further development of this exciting field. (shrink)

Recent activities in virtually all fields engaged in consciousness studies indicate early signs of a structural turn, where verbal descriptions or simple formalisations of conscious experiences are replaced by structural tools, most notably mathematical spaces. My goal here is to offer three comments that, in my opinion, are essential to avoid misunderstandings in these developments early on. These comments concern metaphysical premises of structuralist approaches, overlooked assumptions in regard to isomorphisms, and the question of what structure to consider on the (...) side of consciousness in the first place. I will also explain what, in my opinion, are the great promises of structural methodologies and how they might impact consciousness science at large. (shrink)

Robinson Jeffers’ dark view of humankind is thought to owe much to Friedrich Nietzsche while his admiration for the beauty of nature has been compared to sentiments expressed by Lucretius in de rerum natura. In many respects, however, the philosopher who stands closest to Jeffers in both thought and personality is the ancient Greek thinker Heraclitus of Ephesus. Jeffers’ extended poem ‘The Double Axe’ makes no fewer than five clear references to Heraclitean ideas: (1) ‘Heraclitus’ Sibyl whose voice reached (...) over ten thousand years’; (2) the opposites ‘winter and summer…rain the drought, and peace and war; (3) ‘the eternal fire-wheel; (4) ‘One existence, one music, one organism, one life, one God: star-fire and rock-strength, the sea’s cold flow/And man’s dark soul; and (5) ‘This divine outer universe is after all not at peace with itself, but full of violent strains and conflicts. The physical world is ruled by opposing tensions.’ -/- . (shrink)

Üblicherweise sind die Dinge kompliziert. Dies führt dazu, dass es eine Menge (unvereinbarer) Theorien gibt, die sich diesen Dingen widmen. Manche sind recht einfach gestrickt, andere sind komplexer. Die Existenz dieser unterschiedlichen Ideen sind ein Indiz dafür, dass die Dinge bisher letztlich unerklärt sind. Und sie sind eine Aufforderung, weiter zu denken. Manchmal sind sie aber auch eine Aufforderung, einmal aufzuräumen. Diese Aufgabe habe ich mir zu Herzen genommen und will deswegen in dieser Arbeit (sozusagen als kleiner Reiseführer) einige (...) Theorien zu Handlungsgründen beleuchten. (shrink)

Wendy Laura Belcher has done her cultural work by queering Mother Walatta Petros's life in this one of a kind book. The struggles of Mother Walatta Petros and her nuns and their heirs' reluctance to enunciate same sex desire is brought out well in this book and its review in Prabuddha Bharata which has not missed an issue from 1896 to date. The book under review establishes Mother Walatta Petros as an African proto-feminist. This is a very well researched book. (...) The genre of the gädl too is very well brought out by Belcher and Kleiner. Medievalists offline and online really do not as yet think African indigenous works as worthy of their consideration. Belcher overcame many roadblocks to write something actually worth reading. Because of constraint of space, the book could not be reviewed more expansively. While the book is one of its kind in its domain; it is still an act of colonial interference within Ethiopian realpolitiks of religions. I have mentioned in the review that African Roman Catholic Cardinals like Cardinal Sarah insist on washing his Church's dirty linen in private. Now, the question is, would say, Wendy Laura Belcher and Kleiner have the guts and their publisher too, to write about paedophilia in the various American Churches? Is it not convenient to impute lesbianism to Mother Walatta Petros and shy away from writing about female desire say, within the global Loreto Convents? This reviewer presumes from this book that all convents are dens of female desire: some can be enunciated by white folks; some cannot. The question is: why queer Ethiopian spirituality when Mother Walatta Petros is no longer alive to defend herself? (shrink)