We consider a real-valued function f defined on the set of infinite branches X of a countably branching pruned tree T. The function f is said to be a limsup function if there is a function $u \colon T \to \mathbb {R}$ such that $f(x) = \limsup _{t \to \infty } u(x_{0},\dots,x_{t})$ for each $x \in X$. We study a game characterization of limsup functions, as well as a novel game characterization of functions of Baire class 1.

We define emergence algebraically in the context of discrete dynamical systems modeled as transformation semigroups. Emergence happens when a quotient structure (coarse-grained dynamics) is not a substructure of the original system. We survey small groups to show that algebraic emergence is neither ubiquitous nor rare. Then, we describe connections with hierarchical decompositions and explore some of the philosophical implications of the algebraic constraints.

The game of Go was the last great challenge for artificial intelligence in abstract board games. AlphaGo was the first system to reach supremacy, and subsequent implementations further improved the state of the art. As in chess, the fall of the human world champion did not lead to the end of the game. Now, we have renewed interest in the game due to new questions that emerged in this development. How far are we from perfect play? Can humans catch up? (...) How compressible is Go knowledge? What is the computational complexity of a perfect player? How much energy is really needed to play the game optimally? Here, we investigate these and related questions with respect to the special properties of Go (meaningful draws and extreme combinatorial complexity). Since traditional board games have an important role in human culture, our analysis is relevant in a broader context. What happens in the game world could forecast our relationship with AI entities, their explainability, and usefulness. (shrink)

Computational implementations are special relations between what is computed and what computes it. Though the word “isomorphism” appears in philosophical discussions about the nature of implementations, it is used only metaphorically. Here we discuss computation in the precise language of abstract algebra. The capability of emulating computers is the defining property of computers. Such a chain of emulation is ultimately grounded in an algebraic object, a full transformation semigroup. Mathematically, emulation is defined by structure preserving maps (morphisms) between semigroups. These (...) are systematic, very special relationships, crucial for defining implementation. In contrast, interpretations are general functions with no morphic properties. They can be used to derive semantic content from computations. Hierarchical structure imposed on a computational structure plays a similar semantic role. Beyond bringing precision into the investigation, the algebraic approach also sheds light on the interplay between time and computation. (shrink)

Canada’s Truth and Reconciliation Commission (TRC) is tasked with facing the hundred-year history of Indian Residential Schools. The South African Truth and Reconciliation Commission is frequently invoked in relation to the Canadian TRC, perhaps because this is one of the few TRCs worldwide that Canadians know. Whilst the South African TRC is mainly applauded as an international success, I argue that loose analogizing is often more emotive than concise. Whilst much indeed can be drawn from the South African experience, it (...) is important to specify the Canada–South Africa analogy. In this article, I do so by focussing on the institutional approach to truth and how this relates to issues of settler/White denial. The South African experience teaches that narrow approaches to truth collude with superficial views of reconciliation that deny continuities of violence. Consequently, I argue that Indigenous–settler reconciliation requires a broad truth that locates residential schools on a continuum of violence, linking extraordinary abuses with structural injustices and historic colonization with lived relationships. (shrink)

The purpose of this article is to open a dialogue between research in social sciences concerning collective emotion and historical investigation concerning a religious and political movement of the...

Cet article entend examiner l’iconographie d’un bas-relief qui se trouve à Budapest et provient probablement de Naples. Il a été sculpté en lychnites de Paros vers la fin de l’époque hellénistique ou aux tout débuts de l’époque impériale. Il représente une scène unique : Éros se posant sur une roue en train de tourner. Cette scène n’est pas le cliché instantané d’un quelconque jeu d’équilibre, et il n’existe pas non plus de mythe auquel l’associer. Il faut donc l’interpréter de manière (...) métaphorique, pour lui-même. Cette image d’Éros peut évoquer différents types de champs sémantiques, dénués de véritables rapports les uns avec les autres, voire se contredisant. Si l’on passe en revue les multiples significations des motifs composant l’image dans la culture gréco-romaine à partir de sources iconographiques, archéologiques et textuelles, il existe cinq thématiques différentes qui peuvent être rapprochées de la scène du relief. De plus, cet Éros représenté dans une situation d’équilibre précaire est lié au Kairos, le « Moment opportun ». L’objet, œuvre unique d’un sculptor doctus anonyme, montre donc les traits essentiels du dieu. (shrink)

La courte réflexion qui suit est suscitée par un numéro spécial de cette revue indienne interdisciplinaire, publiée par une maison d’édition dont le nom dit bien la raison sociale : Women’s Initiative, à Thiruvananthapuram, au Kerala. À l’origine de la collection, un séminaire international qui eut lieu en novembre 2015, avec pour titre Decolonizing Theories of Affect, organisé par le centre d’études des femmes de l’Université du Kerala. Il convient de noter que le terme adopté par ce séminai...

To determine the effects of early undernutrition on learning and long-term memory, Swiss mice were cross-fostered randomly at birth to produce litter sizes of 6 and 16, thereby providing “normally nourished” and “undernourished” conditions. At 28 days of age, the pups were housed in groups of 3 and 4, with ad-lib access to food and water until testing began at 60 days of age. Each mouse received 50 active-avoidance training trials daily for 14 consecutive days. Retention testing began 14 days (...) after the end of original training and consisted of 50 trials daily for 5 days. Overall, mice reared in large litters suffered deficits in learning but not in long-term memory. (shrink)

Reflecting the dangers of irresponsible science and technology, Mary Shelley’s Frankenstein quickly became a mythic story that still feels fresh and relevant in the twenty-first century. The unique framework of the Frankenstein myth has permeated the public discourse about science and knowledge, creating various misconceptions around and negative expectations for scientists and for scientific enterprises more generally. Using the Frankenstein myth as an imaginative tool, we interviewed twelve scientists to explore how this science narrative shapes their views and perceptions of (...) science. Our results yielded two main conclusions. First, the Frankenstein myth may help scientists identify popular concerns about their work and offer a framework for constructing a more positive narrative. Second, finding optimistic science narratives may allow scientists to build a better relationship with the public. We argue that by showing the ethical principles and social dimensions of their work, scientists could replace a negative Frankenstein narrative with a more optimistic one. (shrink)

Polanyi belongs to a tradition which is neither modernist nor postmodernist, but which affirms speculative philosophy as an alternative to both and as an important form of public discourse. With his origins in the philosophical culture of central Europe, he may well emerge as a bridge between continental and Anglo-American analytic philosophy. He was a moral philosopher in the Aristotelian tradition who anticipated the turn in recent years away from the modern ethics of rules to the classical ethics of virtue. (...) Within this context he espoused a new kind of liberalism and a different understanding of liberty. (shrink)

As one of the best known science narratives about the consequences of creating life, Mary Shelley’s Frankenstein; or, The Modern Prometheus is an enduring tale that people know and understand with an almost instinctive familiarity. It has become a myth reflecting people’s ambivalent feelings about emerging science: they are curious about science, but they are also afraid of what science can do to them. In this essay, we argue that the Frankenstein myth has evolved into a stigma attached to scientists (...) that focalizes the public’s as well as the scientific community’s negative reactions towards certain sciences and scientific practices. This stigma produces ambivalent reactions towards scientific artifacts and it leads to negative connotations because it implies that some sciences are dangerous and harmful. We argue that understanding the Frankenstein stigma can empower scientists by helping them revisit their own biases as well as responding effectively to people’s expectations for, and attitudes towards, scientists and scientific artifacts. Debunking the Frankenstein stigma could also allow scientists to reshape their professional identities so they can better show the public what ethical and moral values guide their research enterprises. (shrink)

Příspěvek se zaměřuje na otázky týkající se statusu filozofie na počátku 21. století – její pozice v oblasti lidského poznání a vymezení jejího vztahu ke speciálněvědním oborům. Akcentuje a mapuje ten rozměr filozofie 20. století, který se obrátil k jazyku a inicioval a formuloval debaty o vědní metodologii a o úloze filozofie při stanovování základů vědeckého poznání (tj. jeho filozofického fundamentu). Modelovým příkladem uvedených otázek bude v příspěvku analýza vývoje vztahu mezi tzv. analytickou filozofií jazyka a lingvistikou: bude stručně vymezena (...) jejich (vzájemná) pozice v procesu poznávání lidského jazyka a řeči a zkoumány možnosti stanovení hranice mezi těmito dvěma přístupy. Zároveň bude charakterizována povaha jejich nepochybných kontaktů a budou diskutovány důvody těchto procesů. V souhlasu s Lakoffovou tezí, že „na filosofii záleží také v akademickém světě, protože pojmové rámce, na nichž jsou založeny celé akademické disciplíny, mají obvykle své kořeny ve filosofii a […] zcela jistě to platí i v [...] lingvistice,“ poukážeme na historicky danou (explicitní či implicitní) filozofickou fundaci lingvistických teorií a nastolíme otázku, co činí tuto fundaci fundací filozofickou, co ji činí předmětem filozofie a co tedy v posledku znamená věnovat se filozofii jazyka (ve vztahu k lingvistickému zkoumání téhož předmětu). Podrobíme analýze hypotetickou odpověď na výše uvedené otázky – do jaké míry představuje filozofii jazyka reflexe/tematizace základních předpokladů o předmětu a metodě zkoumání, kterou provádějí lingvisté, do jaké míry je možné filozofii jazyka redukovat na metodologii lingvistiky a co by se nabízelo jako alternativa k této redukci. Na uvedeném základě se pokusíme vymezit prostor pro filozofické zkoumání související s jazykem. Analýza podoby tohoto prostoru by pak měla přinést odpověď na otázku po významu slovního spojení „specificky filozofický přístup a přínos“. (shrink)