In _Necropolitics_ Achille Mbembe—a leader in the new wave of Francophone critical theory—theorizes the genealogy of the contemporary world—a world plagued by ever-increasing inequality, militarization, enmity, and terror, as well as by a resurgence of racist, fascist, and nationalist forces determined to exclude and kill. He outlines how democracy has begun to embrace its dark side, or what he calls its “nocturnal body,” which is based on the desires, fears, affects, relations, and violence that drove colonialism. This shift has (...) hollowed out democracy, thereby eroding the very values, rights, and freedoms liberal democracy routinely celebrates. As a result, war has become the sacrament of our times, in a conception of sovereignty that operates by annihilating all those considered to be enemies of the state. Despite his dire diagnosis, Mbembe draws on post-Foucault debates on biopolitics, war, and race, as well as Fanon's notion of care as a shared vulnerability, to explore how new conceptions of the human that transcend humanism might come to pass. These new conceptions would allow us to encounter the Other not as a thing to exclude, but as a person with whom to build a more just world. (shrink)

Euclid’s definition of a point as “that which has no part” has been a major source of controversy in relation to the epistemological and ontological presuppositions of classical geometry, from the medieval and modern disputes on indivisibilism to the full development of point-free geometries in the 20th century. Such theories stem from the general idea that all talk of points as putative lower-dimensional entities must and can be recovered in terms of suitable higher-order constructs involving only extended regions (or bodies). (...) Here I focus on what is arguably the first thorough proposal of this sort, Whitehead’s theory of “extensive abstraction”, offering a critical reconstruction of the theory through its successive installments: from the purely mereological version of ‘La théorie relationniste de l’espace’ (1916) to the refined versions presented in An Enquiry Concerning the Principles of Natural Knowledge (1919) and in The Concept of Nature (1920) to the last, mereotopological version of Process and Reality (1929). (shrink)

Partendo dal problema della dignità umana e della sua libertà come fondamento del pensiero popperiano, questo saggio approfondisce, attraverso un confronto aperto con alcune significative linee di pensiero, il valore rilevante che la lezione antropoetica di Karl Popper, finalizzata a porre in luce il “carattere speciale” della mente umana, assume nella realtà contemporanea.

In _Critique of Black Reason_ eminent critic Achille Mbembe offers a capacious genealogy of the category of Blackness—from the Atlantic slave trade to the present—to critically reevaluate history, racism, and the future of humanity. Mbembe teases out the intellectual consequences of the reality that Europe is no longer the world's center of gravity while mapping the relations among colonialism, slavery, and contemporary financial and extractive capital. Tracing the conjunction of Blackness with the biological fiction of race, he theorizes Black (...) reason as the collection of discourses and practices that equated Blackness with the nonhuman in order to uphold forms of oppression. Mbembe powerfully argues that this equation of Blackness with the nonhuman will serve as the template for all new forms of exclusion. With _Critique of Black Reason_, Mbembe offers nothing less than a map of the world as it has been constituted through colonialism and racial thinking while providing the first glimpses of a more just future. (shrink)

There is no doughnut without a hole, the saying goes. And that’s true. If you think you can come up with an exception, it simply wouldn’t be a doughnut. Holeless doughnuts are like extensionless color, or durationless sound—nonsense. Does it follow, then, that when we buy a doughnut we really purchase two sorts of thing—the edible stuff plus the little chunk of void in the middle? Surely we cannot just take the doughnut and leave the hole at the grocery store, (...) as we cannot just eat the doughnut and save the hole for later. But then, again, surely when we eat a doughnut we do not also eat the hole. Or do we? (shrink)

A discussion of some philosophical themes in the Terminator film series, including: the possibility of time travel, backward causation, the difference between changing the past/future and affecting it, the difference between determinism and fatalism, and how such issues depend on the underlying philosophy of time (eternism vs. presentism vs. the growing-block theory).

La filosofia non è una scienza empirica e si regge in buona misura sull’argomenta- zione (→), cioè sulla capacità di giustificare certe affermazioni, o tesi, sulla base di altre ritenute vere. Sin dall’antichità la teoria dell’argomentazione ha pertanto occupato una posizione di rilievo nella ricerca filosofica, e già a partire da Aristotele ha contribuito a definire quel settore disciplinare che oggi chiamiamo logica (dalla parola greca logos, che significa tra l’altro ‘discorso’, ‘ragionamento’). Aristotele stesso codificò la materia in maniera sistematica, (...) secondo schemi e principi che rimasero insuperati per oltre due millenni (→ sillogistica). A partire dal XIX secolo la teoria logica subì però mutamenti profondi, grazie soprattutto all’opera del matematico inglese George Boole e del filosofo tedesco Gottlob Frege, e nel XX secolo si è assistito a sviluppi straordinari che hanno portato all’applicazione della logica non solo in filosofia ma anche in altri ambiti di ricerca (dalla linguistica al diritto sino all’informatica). (shrink)

Universalist and nihilist answers to philosophical questions may be extreme, but they are clear enough. Aliquidist answers, by contrast, are typically caught between the Scylla of vagueness and indeterminacy and the Charybdis of ungroundedness and arbitrariness, and steering a proper middle course—saying exactly where in the middle one is going to settle—demands exceptional navigating powers. I myself tend to favor extreme answers precisely for this reason. Here, however, I consider one sense in which Something may claim superiority over its polar (...) competitors, Everything and Nothing, when it comes to answerting the ontological question, “What is there?”. (shrink)

In _Brutalism_, eminent social and critical theorist Achille Mbembe invokes the architectural aesthetic of brutalism to describe our moment, caught up in the pathos of demolition and production on a planetary scale. Just as brutalist architecture creates an affect of overwhelming weight and destruction, Mbembe contends that contemporary capitalism crushes and dominates all spheres of existence. In our digital, technologically focused era, capitalism has produced a becoming-artificial of humanity and the becoming-human of machines. This blurring of the natural and (...) artificial presents a planetary existential threat in which contemporary society’s goal is to precipitate the mutation of the human species into a condition that is at once plastic and synthetic. Mbembe argues that Afro-diasporic thought presents the only solution for breaking the totalizing logic of contemporary capitalism: repairing that which is broken, developing a new planetary consciousness, and reforming a community of humans in solidarity with all living things. (shrink)

L’Afrique a participé jusqu’a présent, souvent à titre de laboratoire, au développement de la science occidentale. Les défis rencontrés par la théorie critique aujourd’hui sont l’instrumentalisation de la théorie par les gouvernements, la prolifération de pratiques critiques diverses, notamment écologique, et surtout l’émergence d’un capitalisme de l’image et de l’affect. C’est en relation avec la Chine que l’Afrique peut apporter de nouvelles réponses et relever ces défis.

An overview of contemporary part-whole theories, with reference to both their axiomatic developments and their philosophical underpinnings.

Is a whole something more than the sum of its parts? Are there things composed of the same parts? If you divide an object into parts, and divide those parts into smaller parts, will this process ever come to an end? Can something lose parts or gain new ones without ceasing to be the thing it is? Does any multitude of things (including disparate things such as you, this book, and the tail of a cat) compose a whole of some (...) sort? Questions such as these have occupied us for at least as long as philosophy has existed. They define the field that has come to be known as mereology-the study of all relations of part to whole and of part to part within a whole-and have deep and far-reaching ramifications in metaphysics as well as in logic, the foundations of mathematics, the philosophy of language, the philosophy of science, and beyond. In Mereology, A. J. Cotnoir and Achille C. Varzi have compiled decades of advanced research into a comprehensive, up-to-date, and formally rigorous picture. The early chapters cover the more classical aspects of mereology; the rest of the book deals with variants and extensions. Whether you are an established professional philosopher, an interested student, or a newcomer, inside you will find all the tools you need to join this ever-evolving field of inquiry and theorize about all things mereological. (shrink)

A critical survey of the main metaphysical theories concerning the nature of material objects (substratum theories, bundle theories, substance theories, stuff theories) and their identity conditions, both synchronic (monist vs. pluralist theories) and diachronic (three-dimensionalism, four-dimensionalism, sequentialism).

We exhibit a family of computably enumerable sets which can be learned within polynomial resource bounds given access only to a teacher but which requires exponential resources to be learned given access only to a membership oracle. In general, we compare the families that can be learned with and without teachers and oracles for four measures of efficient learning.

On the opposition between de re and de dicto conceptions of vagueness, with special reference to their bearing on the tasks of ontology.

'Her mouth was like the bloom of a rose, when the rose begins to part the lips of its petals. As soon as I saw, I was done for...All my dreams were of Leucippe.' Achilles Tatius' Leucippe and Clitophon is the most bizarre and risqué of the five 'Greek novels' of idealized love between boy and girl that survive from the period of the Roman empire. Stretching the capacity of the genre to its limits, Achilles' narrative covers adultery, violence, evisceration, (...) pederasty, virginity-testing, and an improbable happy ending. Ingenious and sophisticated in conception, Leucippe and Clitophon is in execution at once subtle, stylish, moving, brash, tasteless, and obscene. This new translation aims to capture Achilles' writing in all its exuberant variety. ABOUT THE SERIES: For over 100 years Oxford World's Classics has made available the widest range of literature from around the globe. Each affordable volume reflects Oxford's commitment to scholarship, providing the most accurate text plus a wealth of other valuable features, including expert introductions by leading authorities, helpful notes to clarify the text, up-to-date bibliographies for further study, and much more. (shrink)

Jockusch and Lewis proved that every DNC function computes a bi-immune set. They asked whether every DNC function computes an effectively bi-immune set. We construct a DNC function that computes no effectively bi-immune set, thereby answering their question in the negative.

Au cours de cet entretien mené par Yala Kisukidi, Achille Mbembe revient sur les thèmes clés de son ouvrage Brutalisme (2020) : la définition de l’idée d’« Afrique », la nécessité de sortir d’une « histoire de la prédation » et de réinvestir des utopies par le « ré-enchantement », la revalorisation d’une « politique du soin » tandis que la terre est endommagée, la création d’un espace africain de libre circulation sont évoquées tour à tour. Convoquant les écrivains (...) Amos Tutuola et Sony Labou Tansi, Mbembe souligne le rôle de l’imaginaire, et singulièrement de la littérature, dans la fabrique des utopies de demain. L’art, entendu comme réserve de vie et de possibles, constitue une ressource pour penser les migrations contemporaines et imaginer d’autres modèles alternatifs au modèle actuel néolibéral. Face à la criminalisation des circulations, le pillage des ressources, la violence du « brutalisme » contemporain, Mbembe en appelle à une « politique du soin » capable d’inclure, depuis l’Afrique, la question du commun et du partage de la Terre. (shrink)

The paper proposes a notion of fairness which overcomes the conflict arising between efficiency and the absence of envy in economies with uncertainty and asymmetrically informed agents. We do it in general economies which include, as particular cases, the main models of differential information economies, providing in this framework a natural competitive equilibrium notion which satisfies the fair criterion. The analysis is conducted allowing the presence of large traders, which may cause the lack of perfect competition.

The present work determines the arithmetic complexity of the index sets of u.c.e. families which are learnable according to various criteria of algorithmic learning. Specifically, we prove that the index set of codes for families that are TxtFex\-learnable is \-complete and that the index set of TxtFex\-learnable and the index set of TxtFext\-learnable families are both \-complete.

Given any oracle, A, we construct a basic sequence Q, computable in the jump of A, such that no A-computable real is Q-distribution-normal. A corollary to this is that there is a Δn+10 basic sequence with respect to which no Δn0 real is distribution-normal. As a special case, there is a limit computable sequence relative to which no computable real is distribution-normal.

Jeffery et al. suggest that three-dimensional environments are not represented according to their volumetric properties, but in a quasi-planar fashion. Here we take into consideration the role of visual experience and the use of technology for spatial learning to better understand the nature of the preference of horizontal over vertical spatial representation.

What sort of logic do we get if we adopt a supervaluational semantics for vagueness? As it turns out, the answer depends crucially on how the standard notion of validity as truth preservation is recasted. There are several ways of doing that within a supervaluational framework, the main alternative being between “global” construals (e.g., an argument is valid iff it preserves truth-under-all-precisifications) and “local” construals (an argument is valid iff, under all precisifications, it preserves truth). The former alternative is by (...) far more popular, but I argue in favor of the latter, for (i) it does not suffer from a number of serious objections, and (ii) it makes it possible to restore global validity as a defined notion. (shrink)