Modal realism -- Time, space, world -- Existence -- Actuality -- Modal realism and modal tense -- Transworld individuals and their identity -- Existensionalism -- Impossibility -- Proposition and relief -- Fictional worlds -- Epistemology.

It may appear that in order to be any way at all, a thing must exist. A possible – worlds version of this claim goes as follows: (E) For every x, for every possible world w, Fx at w only if x exists at w. Here and later in (R), the letter ‘F’ is used as a schematic letter to be replaced with a one – place predicate. There are two arguments against (E). The first is by analogy. Socrates is (...) widely admired now but he does not exist now. So, it is not the case that for every x, for every time t, Fx at t only if x exists at t. Possible worlds are analogous to times. Therefore, (E) is false (cf., Kaplan 1973: 503 – 05 and Salmon 1981: 36 – 40). For the second argument, replace ‘F’ with ‘does not exist’. (E) then says that for every x, for every possible world w, x does not exist at w only if x exists at w. This is obviously false. Therefore (E) is false (cf., Kaplan 1977: 498). Despite their considerable appeal, these arguments are not unassailable. The first argument suffers from the weakness inherent in any argument from analogy; the analogy it rests on may not.. (shrink)

Sherlock Holmes is a fictional individual. So is his favorite pipe. Our pre-theoretical intuition says that neither of them is real. It says that neither of them really, or actually, exists. It also says that there is a sense in which they do exist, namely, a sense in which they exist “in the world of” the Sherlock Holmes stories. Our pre-theoretical intuition says in general of any fictional individual that it does not actually exist but exists “in the world of” (...) the relevant fiction. I wish to defend this pretheoretical intuition. To do so, I need to defend two claims: that fictional individuals do not actually exist, and that they exist “in the world of” the relevant fiction. The aim of this paper is to defend the first claim. (shrink)

I argue that Aristotle’s arguments in passages regarding chance in the Physics and in passages about ignorance in action in the Nicomachean and Eudemian Ethics presuppose two different uses of ‘for the sake of something’, which are able to explain respectively the wish or thought of agents and the type or nature of what they actually do. In my view, however, this does not commit Aristotle, in the ‘ignorance’ passages from the two Ethics, to holding that the type or nature (...) of what the agents actually do is for the sake of killing or wounding. (shrink)

We explore the understanding of conscious states in terms of spatio-temporal dynamics through modelling a mobile agent. Conscious states are associated with an agent's spontaneous and deterministic fluctuation between attachment to and detachment from the surroundings. It is because of this fluctuating nature, we argue, that an agent can perceive structure in the world. Perception requires a conscious state in physical devices. This is a central concern of this paper, and we examine it by simulating a mobile agent equipped with (...) an interconnected Fitz-Hugh-Nagumo (FHN) neuron network with delayed signal transmissions. The agent can move around a space by sensing the environment pattern through the input neurons and computing the motor outputs via the FHN network. The agent shows a variety of motion styles and a spontaneous selection of motion styles responding to the surroundings. Such a phenomenon is named embodied chaotic itinerancy (ECI), as an extension of chaotic itinerant dynamics, which is known to be a typical dynamic with a high degree of freedom. We take this selective mode of response to be significant, particularly those interacting with spatial pattern, as an inevitable property of conscious states. (shrink)

Was konnen Rechtsvergleich und Rechtsgeschichte leisten? Der Autor beantwortet diese Frage mit Blick auf die Gesetzgebungslehre des deutschen Juristen und Philosophen Christian Thomasius (1655-1728). Er weist nach, dass dessen Gesetzgebungslehre sich im Bereich des Privatrechts grundsatzlich durchsetzte und auf die Gesetzgebung der fruhen Neuzeit grossen Einfluss hatte, obwohl Thomasius kein originales Gesetzbuch verfasste. Der Jurist war der Meinung, man konne durch Rechtsvergleich vermuten, dass eine heimische Sitte, die den gemeinsamen Sitten vieler Volker bzw. dem Volkergemeinrecht entspreche, geeignet sei, ins Gesetzbuch (...) aufgenommen zu werden. Er stutzte diesen Vergleich durch historische Betrachtungen.". (shrink)

The paper explores the logical strength of Isbell's zig‐zag theorem using the framework of reverse mathematics. Working in, we show that is equivalent to Isbell's zig‐zag theorem for countable monoids: If B is a monoid extension of A, then is dominated by A if and only if b has a zig‐zag over A. Our proof of Isbell's zig‐zag theorem avoids use of strong comprehension axioms common in traditional proofs. We also analyze the strength of theorems concerning binary relations.

Those who object to David Lewis' modal realism express qualms about philosophical respectability of the Lewisian notion of a possible world and its correlate notion of an inhabitant of a possible world. The resulting impression is that these two notions either stand together or fall together. I argue that the Lewisian notion of a possible world is otiose even for a good Lewisian modal realist, and that one can carry out a good Lewisian semantics for modal discourse without Lewisian possible (...) worls. I do so by generalizing Lewis' own idea that restrictions on quantification come and go with the pragmatic wind and relativizing possible worlds as shifting domains of discourse. I then suggest a way to soften the infamous incredulous stare. (shrink)

Deep theorizing about possibility requires theorizing about possible objects. One popular approach regards the notion of a possible object as intertwined with the notion of a possible world. There are two widely discussed types of theory concerning the nature of possible worlds: actualist representationism and possibilist realism. They support two opposing views about possible objects. Examination of the ways in which they do so reveals difficulties on both sides. There is another popular approach, which has been influenced by the philosophy (...) of Alexius Meinong. The Meinongian approach is relevant to theorizing about possible objects because it attempts to construct a general theory of objects other than ordinary concrete existing objects. Independently of the debate about the nature of possible worlds or about Meinongianism, it is not always as straightforward as it may at first appear to determine whether putative possible objects are indeed possible. Another category of object similar to that of a possible object is the category of a fictional object. Although initially attractive, the idea that fictional objects are possible objects should not be accepted blindly. An important instance of theoretical usefulness of possible objects is their central role in the validation of two controversial theorems of a simple quantified modal logic. (shrink)

Strong Nash equilibrium and coalition-proof Nash equilibrium rely on the idea that players are allowed to form coalitions and make joint deviations. Both of these notions consider cases in which any coalition can be formed. Accordingly, there may arise “conflicts of interest” that prevent a player from choosing an action that simultaneously meets the requirements of two coalitions to which he or she belongs. Here, we address this observation by studying an organizational framework such that the coalitional structure is motivated (...) by real-life examples where players cannot form some coalitions and formulated in such a way that no conflicts of interest remain. We define an organization as an ordered collection of partitions of the player set such that any partition is coarser than the partitions that precede it. For any given organization, we introduce the notion of organizational Nash equilibrium. We analyze the existence of equilibrium in a subclass of games with strategic complementarities and illustrate how the proposed notion refines the set of Nash equilibria in some examples of normal form games. (shrink)

This article explores the diversity of the European idea of peace in the late thirteenth and early fourteenth centuries. In the late Middle Ages, a literary genre of “peace writings” emerged. Despite the ubiquitous academic interest in peace, however, late medieval scholastic conceptions of peace have hitherto escaped serious scholarly investigation. Drawing on Johan Galtung's classic typology of the idea of peace, this essay offers an examination of the discussions of Thomas Aquinas, Remigio de’ Girolami, and Dante on peace, which (...) not only illustrates the diversity of late medieval visions of peace but also argues that late medieval thinkers shared the recognition that temporal peace was possible: a significant departure from the Christian skepticism of this-worldly peace. (shrink)

Modal Dimensionalism is a metaphysical theory about possible worlds that is naturally suggested by the often-noted parallelism between modal logic and tense logic. It says that the universe spreads out not only in spatiotemporal dimensions but also in a modal dimension. It regards worlds as nothing more or less than indices in the modal dimension in the way analogous to the way in which Temporal Dimensionalism regards temporal points and intervals as indices in the temporal dimension. Despite its naturalness and (...) intuitive appeal. Modal Dimensionalism has been largely ignored while the debates between David Lewis and his critics have dominated the discourse on the nature of possible worlds. It is high time that we took Modal Dimensionalism seriously as a viable alternative. (shrink)

ABSTRACTAnother individual’s gaze automatically shifts an observer’s attention to a location. This reflexive response occurs even when the gaze is presented subliminally over a short period. Another’s gaze also increases the preference level for items in the gaze direction; however, it was previously unclear if this effect occurs when the gaze is presented subliminally. This study showed that the preference levels for nonsense figures looked at by a subliminal gaze were significantly greater than those for items that were subliminally looked (...) away from. Targets that were looked at by a subliminal gaze were detected faster ; however, the participants were unable to detect the gaze direction. These results indicate that another individual’s gaze automatically increases the preference levels for items in the gaze direction without conscious awareness. (shrink)

Critical examination of Graham Priest's views on nothing.

In this article, I highlight the following points. In 2022, the publication of the two volumes Inédits I (1946-1947) and Inédits II (1947-1949) was a great surprise. Among the many discoveries I made, I will focus here on the reading notes Merleau-Ponty had prepared on Hegel’s Aesthetics. I suggest that the motives of his reading of Hegel’s Aesthetics must be understood according to two aspects, intimately linked: they are first due to the fact that he himself was trying to formulate (...) his own theory of art and aesthetics; and second that he had in mind Sartre’s work What is Literature? I show that, indeed, in his reading of the Aesthetics, Merleau-Ponty very clearly focuses on the distinction between the different genres of art and on their historical divisions. This is a point that leads me to raise the following question: What are the distinctions between artistic genres in Merleau-Ponty? Here, for me it is above all a question of taking into account Merleau-Ponty’s reservations, exposed in his later essay “Indirect Language and the Voices of Silence,” concerning the Sartrean conception of literature which distinguishes poetry from prose. Ultimately, I defend the idea that Merleau-Ponty proposes an experience of art that is inter-genre and inter-media, which opens an indefinite horizon from the historical limitation of art. Based on his theory of language and art, he thus recognized the historicity of language and art, while considering the possibility of transforming this historicity into something open. (shrink)

Mark Jago’s four arguments against Takashi Yagisawa’s extended modal realism are examined and shown to be ineffective. Yagisawa’s device of modal tense renders three of Jago’s arguments harmless, and the correct understanding of predications of modal properties of world stages blocks the fourth one.

This paper describes a decision model for an autonomous agent that provides an inhabitant with comfort based on information network technologies that connect home electric appliances with household equipment. The inhabitant enjoys the benefit of comfort, while he pays the cost for keeping that comfort. The autonomous agent should decide and control household equipment considering that cost from the inhabitant’s viewpoint. Thus, we utilized a representation scheme called an “influence diagram” that enabled us to model the decision-making process of the (...) agent from the inhabitant’s point of view. First, decision modeling using the influence diagram is presented via an example. The presented model consists of three information-processing modules: a module for estimating the situation of an inhabitant based on information from home networks, a module for evaluating comfort of the inhabitant, and a module for making decisions that maximize the utility of the inhabitant from both the viewpoints of comfort and the cost paid for that comfort. Next, an experiment for verifying whether the presented model is effective or not, and its results are described. Finally, our model of the agent is discussed in relation to social intelligence design by investigating the interactive processes between the agent and the inhabitant. (shrink)

Western Political Thought in Dialogue with Asia is a unique collection of essays that examines the exchange of political ideas between Western Europe and Asia from the Middle Ages to the early twentieth century. The contributors to the volume call for globalizing the scope of research and teaching in the history of political thought.

Macroautophagy is a major degradation mechanism of cell components via the lysosome. Macroautophagy greatly contributes to not only cell homeostasis but also the prevention of various diseases. Because macroautophagy proceeds through multi‐step reactions, researchers often face a persistent question of how macroautophagic activity can be measured correctly. To make a straightforward determination of macroautophagic activity, diverse monitoring assays have been developed. Direct measurement of lysosome‐dependent degradation of radioisotopically labeled cell proteins has long been applied. Meanwhile, indirect monitoring procedures have been (...) developed. In these assays, autophagosome marker proteins, microtubule‐associated proteins 1A/1B light chain 3B‐II (LC3B‐II) and gamma‐aminobutyric acid receptor‐associated protein‐II (GABARAP‐II) have been analyzed and the validity of the assays strongly depends on appropriate assessment of the fluctuation of LC3‐II and/or GABARAP‐II levels in the presence or absence of lysosomal inhibitors. This article describes these monitoring methods, paying special attention to the principles and characteristics of each procedure. (shrink)