Correspondence between Aurobindo Ghose, 1872-1950 and Dilip Kumar Roy, 1897-1980.

Study of Saṅkṣepaśārīraka of Sarvajñātman, condensed version of Śārīrakamīmāṃsābhāṣya of Śaṅkarācārya, work on Advaita Vedanta philosophy.

This paper presents an attempt to bridge the gap between logical and cognitive treatments of strategic reasoning in games. There have been extensive formal debates about the merits of the principle of backward induction among game theorists and logicians. Experimental economists and psychologists have shown that human subjects, perhaps due to their bounded resources, do not always follow the backward induction strategy, leading to unexpected outcomes. Recently, based on an eye-tracking study, it has turned out that even human subjects who (...) produce the outwardly correct ‘backward induction answer’ use a different internal reasoning strategy to achieve it. The paper presents a formal language to represent different strategies on a finer-grained level than was possible before. The language and its semantics help to precisely distinguish different cognitive reasoning strategies, that can then be tested on the basis of computational cognitive models and experiments with human subjects. The syntactic framework of the formal system provides a generic way of constructing computational cognitive models of the participants of the Marble Drop game. (shrink)

On the philosophical concepts of the religion of the Khasis, ethnic people from Meghalaya.

How do people reason about their opponent in turn-taking games? Often, people do not make the decisions that game theory would prescribe. We present a logic that can play a key role in understanding how people make their decisions, by delineating all plausible reasoning strategies in a systematic manner. This in turn makes it possible to construct a corresponding set of computational models in a cognitive architecture. These models can be run and fitted to the participants’ data in terms of (...) decisions, response times, and answers to questions. We validate these claims on the basis of an earlier game-theoretic experiment about the turn-taking game “Marble Drop with Surprising Opponent”, in which the opponent often starts with a seemingly irrational move. We explore two ways of segregating the participants into reasonable “player types”. The first way is based on latent class analysis, which divides the players into three classes according to their first decisions in the game: Random players, Learners, and Expected players, who make decisions consistent with forward induction. The second way is based on participants’ answers to a question about their opponent, classified according to levels of theory of mind: zero-order, first-order and second-order. It turns out that increasing levels of decisions and theory of mind both correspond to increasing success as measured by monetary awards and increasing decision times. Next, we use the logical language to express different kinds of strategies that people apply when reasoning about their opponent and making decisions in turn-taking games, as well as the ‘reasoning types’ reflected in their behavior. Then, we translate the logical formulas into computational cognitive models in the PRIMs architecture. Finally, we run two of the resulting models, corresponding to the strategy of only being interested in one’s own payoff and to the myopic strategy, in which one can only look ahead to a limited number of nodes. It turns out that the participant data fit to the own-payoff strategy, not the myopic one. The article closes the circle from experiments via logic and cognitive modelling back to predictions about new experiments. (shrink)

The welfare and protection of human subjects is critical to the integrity of clinical investigation and research. Institutional review boards were thus set up to be impartial reviewers of research protocols in clinical research. Their main role is to stand between the investigator and her human subjects in order to ensure that the welfare of human subjects are protected. While there is much literature on the conflicts of interest faced by investigators and researchers in clinical investigations, an area that is (...) less explored is CIs that may affect members of IRBs during the institutional ethics review of clinical investigations. This article examines the notion of CIs in clinical research and attempts to develop a framework for a clearer and more balanced approach to identifying CIs that may influence members of IRBs and impede their independence. It will also apply the proposed framework to demonstrate how IRBs possess, or at least may appear to possess, forms of financial CIs and non-financial CIs. The proper identification and management of these CIs is critical to preserving the integrity of clinical investigations and achieving the primary aim of human subjects protection. (shrink)

We discuss a simple logic to describe one of our favourite games from childhood, hide and seek, and show how a simple addition of an equality constant to describe the winning condition of the seeker makes our logic undecidable. There are certain decidable fragments of first-order logic which behave in a similar fashion and we add a new modal variant to that class of logics. We also discuss the relative expressive power of the proposed logic in comparison to the standard (...) modal counterparts. (shrink)

When agents know a protocol, this leads them to have expectations about future observations. Agents can update their knowledge by matching their actual observations with the expected ones. They eliminate states where they do not match. In this paper, we study how agents perceive protocols that are not commonly known, and propose a semantics-driven logical framework to reason about knowledge in such scenarios. In particular, we introduce the notion of epistemic expectation models and a propositional dynamic logic-style epistemic logic for (...) reasoning about knowledge via matching agentsÊ expectations to their observations. It is shown how epistemic expectation models can be obtained from epistemic protocols. Furthermore, a characterization is presented of the effective equivalence of epistemic protocols. We introduce a new logic that incorporates updates of protocols and that can model reasoning about knowledge and observations. Finally, the framework is extended to incorporate fact-changing actions, and a worked-out example is given. © 2013 Elsevier B.V. (shrink)

There are two important aspects of any democratic decision: aggregation of preferences and deliberation about preferences. They are essential and complementary components of any decision making process. While the well-studied process of aggregation focuses on accumulating individual preferences without discussing their origin [4], deliberation can be seen as a conversation through which individuals justify their preferences, a process that might lead to changes in their opinions as they get influenced by one another. Till now, there has been a lot of (...) work on the ‘aggregation’ aspect (e.g., [12, 14, 6]). However, some recent work has focussed on the deliberation aspect as well [8, 9, 10, 15]. Sometimes, deliberation does not lead to unanimity in preferences, but the discussion can lead to some ‘preference uniformity’ (see how deliberation can help in bypassing social choice theory’s impossibility results in [5]), which might facilitate their eventual aggregation. In addition, the combination of both processes provides a more realistic model for decision making scenarios. In light of this status quo, our focus is on the formal study of achieving such preference uniformities, e.g., single-peaked, single-caved, single-crossing, value-restricted, best-restricted, worst-restricted, medium-restricted, or group-separable profiles. In this short abstract we provide our preliminary ideas towards achieving singlepeakedness of preference profiles via deliberation. In what follows, we define two preference upgrade operators based on [8, 9] and provide a preliminary discussion on how single-peaked preference profiles can be achieved through such operations. We will delve into the details of the logical language in the main paper. (shrink)

We make a proposal for formalizing simultaneous games at the abstraction level of player’s powers, combining ideas from dynamic logic of sequential games and concurrent dynamic logic. We prove completeness for a new system of ‘concurrent game logic’ CDGL with respect to finite non-determined games. We also show how this system raises new mathematical issues, and throws light on branching quantifiers and independence-friendly evaluation games for first-order logic.

We discuss a simple logic to describe one of our favourite games from childhood, hide and seek, and show how a simple addition of an equality constant to describe the winning condition of the seeker makes our logic undecidable. There are certain decidable fragments of first-order logic which behave in a similar fashion with respect to such a language extension, and we add a new modal variant to that class. We discuss the relative expressive power of the proposed logic in (...) comparison to the standard modal counterparts. We prove that the model checking problem for the resulting logic is \(\textsf{P}\) -complete. In addition, by exploring the connection with related product logics, we gain more insight towards having a better understanding of the subtleties of the proposed framework. (shrink)

We make a proposal for formalizing simultaneous games at the abstraction level of player's powers, combining ideas from dynamic logic of sequential games and concurrent dynamic logic. We prove completeness for a new system of 'concurrent game logic' CDGL with respect to finite non-determined games. We also show how this system raises new mathematical issues, and throws light on branching quantifiers and independence-friendly evaluation games for first-order logic.

We make a proposal for formalizing simultaneous games at the abstraction level of player’s powers, combining ideas from dynamic logic of sequential games and concurrent dynamic logic. We prove completeness for a new system of ‘concurrent game logic’ CDGL with respect to finite non-determined games. We also show how this system raises new mathematical issues, and throws light on branching quantifiers and independence-friendly evaluation games for first-order logic.

This LNCS book is part of the FOLLI book series and constitutes the proceedings of the 8th International Workshop on Logic, Rationality, and Interaction, LORI 2021, held in Xi`an, China, in October 2021. The 15 full papers presented together with 7 short papers in this book were carefully reviewed and selected from 40 submissions. The workshop covers a wide range on the following topics such as doxastic and epistemic logics, deontic logic, intuitionistic and subsstructural logics, voting theory, and causal inference.

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Courtesans and Tantric Consorts: Sexualities in Buddhist Narrative, Iconograhy, and RitualRita M. GrossCourtesans and Tantric Consorts: Sexualities in Buddhist Narrative, Iconograhy, and Ritual. By Serinity Young. New York and London: Routledge, 2004. 256 pp.This book is a welcome addition to the growing literature on Buddhism and gender. It presents information and explores issues on this topic in new and innovative ways. It is also well researched and well (...) written. Part of Young's innovation is her use of Buddhist art and iconography, which she takes as seriously as textual sources are usually taken in Buddhist studies. Many of her most interesting suggestions and conclusions result from the seriousness with which she takes Buddhist art as resource for understanding Buddhism more accurately and completely. The other foci are clear from her subtitle: narrative and ritual. There is much less attention to the canonical and philosophical texts of Buddhism that are so often invoked in studies of Buddhism and gender.Studies of sexuality or gender often end up primarily discussing new information about women and new ways of understanding women's participation in or exclusion from religion. This study is no exception, which is not in any way to fault the book. Young's analyses center on ways that women have been both included in the Buddhist world and excluded from that world. Among the many varieties of Buddhism, Young primarily focuses on early Indian Buddhism and Tantric Buddhism, which have the most provocative teachings about gender and sexuality. In Young's analyses, we see how women participated in early Buddhism in ways that have not been recognized in most earlier scholarship and ways in which they are excluded from Tantric Buddhism and most later forms of Buddhism that have not always been acknowledged.Young's interpretations of the traditional life stories of the Buddha are extremely innovative and interesting. She argues that the future Buddha's rejection of women when he left his home and family must be balanced with his reintegration into the world of women before and during his enlightenment experience. She argues that this reintegration is evidenced especially in his acceptance of food from Sujata and in the help he received from the Earth Goddess during his trials with Mara. Young argues that many Buddhists throughout the ages have focused on episodes in his life that deal with rejection of women but have not fully taken in the implications of the stories in which women become important allies in the mission of the Buddha.The sources for early Indian Buddhism most invoked by Western scholars of Buddhism are textual. These textual sources present a very mixed picture of women's lot in early Indian Buddhism. On the one hand, the Therigatha and some stories from the life of the Buddha present a relatively optimistic picture of women's possibilities and their acceptance in the early Buddhist community. On the other hand, texts present a constant message of the importance of renunciation, and much of the recommended renunciation involves women. Texts written by and for monks frequently conflate women with sexuality and hold women responsible for wayward monks' sexual temptations. Against this widely known material, Young calls upon the evidence of early Indian Buddhist art to argue that the monks' anti-women texts [End Page 174] do not tell the whole story about women in early Indian Buddhism. The art work, which was much more important for tutoring largely illiterate Buddhist laypeople, consistently portrays women voluptuously and positively. This contrast between text and art is so great that recently, during a slide show in a class I taught on ancient Indian Buddhism, a student asked point blank how monks could possibly sanction the voluptuous portrayals of women common in early Indian Buddhist sanctuaries. I didn't remember Young's cogent analysis at first, but eventually did reply, using her analysis. The monastic establishment controlled the discourse that eventually became the texts of early Buddhism, but the lay donors controlled the visual representations that decorated the sites where Buddhism was preserved. The lay donors were more than happy to represent the fecundity and beauty of women, without whom there would be no future donors or... (shrink)

The author exposes some stages judged necessary for the examination of the modern theories about the economic, social and cultural changes of brazilian history. On the other hand, this movement would have in view to search the epistemological grounds of such "Brazil's explanations". This text, it must be remembered, presents it self only as a work plan.O autor expõe etapas que julga necessárias para o exame de modernas teorias a respeito das transformações econômicas, sociais e culturais da história brasileira. Por (...) outro lado, esse movimento visaria investigar os fundamentos epistemológicos de tais "explicações do Brasil". O texto corresponde, insiste-se, a um plano de trabalho. (shrink)