The paper seeks a perfectly general argument regarding the non-contingent limits to any (human or non-human) knowledge. After expressing disappointment with the history of philosophy on this score, an argument is grounded in Fitch’s proof, which demonstrates the unknowability of some truths. The necessity of this unknowability is then defended by arguing for the necessity of Fitch’s premise—viz., there this is in fact some ignorance.

What is knowledge and what, if any, are its limits? In this essay I present a scientist’s view of our limits to knowledge, which come in many forms. Limits are set by our imagination and cultural backgrounds, by our technology, and by some of the laws of physics themselves. Science creates knowledge about the world through making models and measurement; and understanding the limits of our measurements is a central tenet of physics. Within (...) physics, the calculation of these limits is generally harder than the measurements themselves, and within other disciplines it can be very difficult indeed. But measurements can only be made within the context of a model, and choosing between competing models can be very contentious. When competing models predict the same outcomes a further principle is required – Occam’s razor. (shrink)

With his talk on the limits of natural knowledge in 1872 ("Ignorabimus! We will never know!"), Emil du Bois-Reymond stirred up a controversy (the Ignorabimus-Streit), which spread widely beyond German-speaking countries. It concerned the very possibility to set boundaries to knowledge, the development of the sciences, their attainable results, and concept formation. In this volume, the philosophical value of the Ignorabimus controversy is critically examined. The historical matter and its theoretical implications are assessed with regard to the (...) mutual relationships between philosophy and the sciences in the 19th century and beyond. (shrink)

Although the connectionist approach has lead to elegant solutions to a number of problems in cognitive science and artificial intelligence, its suitability for dealing with problems in knowledge representation and inference has often been questioned. This paper partly answers this criticism by demonstrating that effective solutions to certain problems in knowledge representation and limited inference can be found by adopting a connectionist approach. The paper presents a connectionist realization of semantic networks, that is, it describes how knowledge (...) about concepts, their properties, and the hierarchical relationship between them may be encoded as an interpreter‐free massively parallel network of simple processing elements that can solve an interesting class of inheritance and recognition problems extremely fast—in time proportional to the depth of the conceptual hierarchy. The connectionist realization is based on an evidential formulation that leads to principled solutions to the problems of exceptions and conflicting multiple inheritance situations during inheritance, and the best‐match or partial‐match computation during recognition. The paper also identifies constraints that must be satisfied by the conceptual structure in order to arrive at an efficient parallel realization. (shrink)

The Profound Limitations of Knowledge explores the limitations of knowledge and argues that neither reasoning nor direct or indirect observations can be trusted. We cannot even assign probabilities to claims of what we can know. Furthermore, for any set of data, there are an infinite number of possible interpretations. Evidence suggests that we live in a participatory universe--that is, our observations shape reality.

This is a book about how social sciences can be improved in ways that its relevance is expanded, the applicability of its knowledge is enlarged and increased, and the commitment to questioning the status quo is strengthened.

We can't know everything; in fact, compared to the vast expanses of our ignorance, we can't really know very much. So the problem of "limiting knowledge" is not just one of the conflict between efforts to make knowledge available and efforts to keep knowledge locked up. There is also the often-invisible problem of how we decide what it is we are going to try to know, and what, as a consequence, we decide, even if by benign neglect, (...) we are not going to know. This problem is particularly present in efforts to expand formal knowledge about the world through scientific research. In this essay I will briefly explore how this effort to expand knowledge brings with it, unavoidably and simultaneously, powerfully enforced limits on knowledge that are often unexamined. (shrink)

Draws on interviews with many of the worlds leading scientists to discuss the possibility that humankind has reached the limits of scientific knowledge.

Risk–benefit assessment is a routine requirement for research ethics committees that review and oversee biomedical research with human subjects. Nevertheless, it remains unclear how to weigh and balance risks to research participants against the social benefits that flow from generating biomedical knowledge. In this article, we address the question of whether there are any reasonable criteria for defining the limit of permissible risks to individuals who provide informed consent for research participation. We argue against any a priori limit to (...) permissible research risks. However, attention to the uncertainty of potential social benefit that can be derived from any particular study warrants caution in exposing prospective research participants to a substantial likelihood of serious harm. (shrink)

Knowledge and its Limits presents a systematic new conception of knowledge as a kind of mental stage sensitive to the knower's environment. It makes a major contribution to the debate between externalist and internalist philosophies of mind, and breaks radically with the epistemological tradition of analyzing knowledge in terms of true belief. The theory casts new light on such philosophical problems as scepticism, evidence, probability and assertion, realism and anti-realism, and the limits of what can (...) be known. The arguments are illustrated by rigorous models based on epistemic logic and probability theory. The result is a new way of doing epistemology and a notable contribution to the philosophy of mind. (shrink)

This article examines the bases and limits to the right to liberty of expression. Both the extreme libertarian and the orthodox liberal views are rejected. Against them, It is argued that the right to liberty is to be defended both as a prima facie intrinsic moral right derivative from man's autonomy and as a conditional right deriving from man's right to access to intrinsic goods including knowledge, True belief, Self-Development. The rights so derived are not absolute rights, But (...) rights to be limited by concern for justice, Other rights, Morality, Knowledge and true belief, And morality. (shrink)

In this essay collection, leading physicists, philosophers, and historians attempt to fill the empty theoretical ground in the foundations of information and address the related question of the limits to our knowledge of the world. Over recent decades, our practical approach to information and its exploitation has radically outpaced our theoretical understanding - to such a degree that reflection on the foundations may seem futile. But it is exactly fields such as quantum information, which are shifting the boundaries (...) of the physically possible, that make a foundational understanding of information increasingly important. One of the recurring themes of the book is the claim by Eddington and Wheeler that information involves interaction and putting agents or observers centre stage. Thus, physical reality, in their view, is shaped by the questions we choose to put to it and is built up from the information residing at its core. This is the root of Wheeler's famous phrase "it from bit." After reading the stimulating essays collected in this volume, readers will be in a good position to decide whether they agree with this view. (shrink)

The ArgumentThis paper analyzes the complex and many-layered interrelation between the realization of the inevitable limits of precision in the experimental domain, the emerging quantum theory, and empirically oriented philosophy in the years 1925–1935. In contrast to the usual historical presentation of Heisenberg's uncertainty principle as a purely theoretical achievement, this work discloses the experimental roots of Heisenberg's contribution. In addition, this paper argues that the positivistic philosophy of elimination of unobservables was not used as a guiding principle in (...) the emergence of the new quantum theory, but rather mostly as a post facto justification. The case of P. W. Bridgman, analyzed in this paper, demonstrates how inconclusive operationalistic arguments are, when used as a possible heuristic aid for future discoveries. A large part of this paper is devoted to the evolution of Bridgman's views, and his skeptical reassessment of operationalism and of the very notion of scientific truth. (shrink)

Supported by Ian Hacking’s concept of “intervention,” and Charles Taylor’s concept of “intentionality,” this article argues that doubting is acting, and that doubting is therefore subject to the same demands of responsibility as any other action. The argument is developed by using medical practice as a test-case. The central suggestion is that the demand of acting responsibly limits doubt in medicine. The article focuses on two such limitations to doubt. Firstly, the article argues that it is irresponsible to doubt (...) that our actions can harm other people. Secondly, the article argues that it is irresponsible not to strive for coherence between our utterances of doubt and our other actions. Incoherence here can cause “cultural impoverishment.” In a larger context this article also argues that medicine can enrich our epistemology, because medical knowledge displays important traits of knowledge that are downplayed in traditional epistemology derived from mathematics and physics. In particular, medicine makes it possible to get the relation between ethics and epistemology into sharper focus. The endpoint in medical epistemology is “responsible action,” and not certainty in and of itself. (shrink)

The present paper investigates the essential tenets of the Southwestern Neo-Kantians? take on the philosophy of religion. Specifically, I concentrate on two diverse aspects of Windelband and Rickert?s approaches to religion. In the first place, I look at the way in which they determine religious values. In the second place, I focus on the manner in which they confront religion with the systematic structure of culture. As a result of the analysis of the texts of both authors, we see that (...) it is possible to detect at least three possible roads to elaborate a philosophy of religion. In spite of this plurality of paths, I argue that they exhibit a similar underlying problem, namely, the problematic relationship between transcendental philosophy and metaphysics. It is for this reason that the philosophy of religion takes the form of a reflection on the limits of knowledge, and with it, on the limits of transcendental philosophy. (shrink)

The knowledge in the context of COVID-19 pandemic must be viewed from the perspective of its purpose: the intention to limit the effects and spread of SARS-CoV-2, respectively to cancel them. In order to increase the level of knowledge we identify some of the possible classifications, based on them allowing a first outline of uncertainty. The purpose of the analysis is to contribute to the clearest possible identification of the known and the unknown, thus creating a more stable (...) cognitive field for effective public health decisions. Given that measures to combat the COVID-19 pandemic along with its effects is one of humanity's priorities, it is useful to clear up some of the issues that are likely to have improper meanings. The identification of each situation that includes significant doses of unknown and the public recognition of the uncertainty represents the condition for the possibility of robust public policies. Indicating the place that each current aspect occupies in one of the four cognitive quadrants is an important cognitive work. The position we adopt is characteristic for cognitive skepticism, trying to indicate some of the knowledge`s limits of and the risks of pseudo-knowledge. The article is a theoretical approach, based on some epistemological principles of critical thinking, the starting point being the belief that knowing what you do not know is an essential part of the knowledge. (shrink)

For two hundred years, people have been trying to make sense of Hegel’s so-called “dialectical method”. Helpfully, Hegel frequently compares this method with the idea of life, or the organic (cf., e.g., PhG 2, 34, 56). This comparison has become very popular in the literature (in, e.g., Pippin, Beiser, and Ng). Typically, scholars who invoke the idea of life also note that the comparison has limits and that no organic analogy can completely explain the nature of the dialectical method. (...) To my knowledge, however, no scholar has attempted to explain exactly where or why the organic analogy falls short. In this paper, I propose to remedy this lack by exploring in depth two different organic models. In brief, I argue that both versions of the organic model require an appeal to something external to the organism, and no such appeal can be made sense of within the dialectical method. (shrink)

Niels Bohr's arguments indicating the non-applicability of quantum methodology to the study of the ultimate details of life, given in his bookAtomic Physics and Human Knowledge, conflict with the commonly held opposite view. The bases for the usual beliefs are examined and shown to have little validity; significant differences do exist between the living organism and the type of system studied successfully in the physics laboratory. Dealing with living organisms in quantum-mechanical terms with the same degree of rigor as (...) is normal for non-living systems would seem not to be possible without considering also questions of the origins of life and of the universe. (shrink)

ABSTRACT The ethics of reciprocity offered by Simone de Beauvoir is founded upon an irreducible epistemic gap between self and other. This gap is often overlooked by commentators, who have tended to imply that the ethics of reciprocity requires recognition of oneself in the other. I claim that Beauvoir's ethics forecloses such recognition of oneself in the other and reveals that it is at once illusory and dangerous. Recognition in this sense is based upon a false notion of self and (...) constitutes a violation of the alterity of the other. I argue that Beauvoir stages this dangerous form of recognition in her novel She Came to Stay, while her claims about reciprocity in The Second Sex provide an image of a different, more positive recognition capable of respecting alterity. Finally, I claim that the epistemic gap characteristic of reciprocity also holds with respect to one's self-relation. (shrink)

This article sets out to show that it is more precise to speak of different liberal traditions than it is to speak of liberalism in general. The argument is pursued by showing how contrary to French liberalism, which has a strong republican element, and in contrast with English and Scottish liberalism, which reserve an important place for political economy, there is also a central European liberalism with a marked philosophical dimension. This particular form of liberalism is analysed by examining the (...) writings of Kant, Simmel and Freud. It is stated at the outset that critiques of liberalism often fail to appreciate the richness and diversity of liberal thinking, and that this depth must be borne in mind in any effective critique. It is explained that there are indeed grounds to critique liberal thought and practice, but that these grounds are obscured by lumping distinct and heterogeneous traditions together as if they all suffered from the same defects. (shrink)

Peer review is embedded in the core of our knowledge generation systems, perceived as a method for establishing quality or scholarly legitimacy for research, while also often distributing academic prestige and standing on individuals. Despite its critical importance, it curiously remains poorly understood in a number of dimensions. In order to address this, we have analysed peer review to assess where the major gaps in our theoretical and empirical understanding of it lie. We identify core themes including editorial responsibility, (...) the subjectivity and bias of reviewers, the function and quality of peer review, and the social and epistemic implications of peer review. The high-priority gaps are focused around increased accountability and justification in decision-making processes for editors and developing a deeper, empirical understanding of the social impact of peer review. Addressing this at the bare minimum will require the design of a consensus for a minimal set of standards for what constitutes peer review, and the development of a shared data infrastructure to support this. Such a field requires sustained funding and commitment from publishers and research funders, who both have a commitment to uphold the integrity of the published scholarly record. We use this to present a guide for the future of peer review, and the development of a new research discipline based on the study of peer review. (shrink)

The work of Michel Serres has been of significant value, yet remains under-utilized across the social sciences. In this review article the long-awaited translation of his The Five Senses is explored, with particular interest in its offerings for contemporary theories of the materiality of the human condition. Serres invites the reader into a diverse and rich world of sense, from localized sites of individual bodies to global landscapes of cities and countrysides. Not reducible to individual bodies or language, sense becomes (...) the primary mode of relationality through which experience is produced. Such insights are explored in light of contemporary concerns regarding the constitution of bodies and materiality, which emphasize notions of movement and process. The distinction Serres makes between sense and language is argued to be valuable in terms of theories of virtuality that frame material embodiment as ineffable and beyond language. The article concludes by suggesting that Serres can aid re-attunement to sense, although not in a generalistic fashion, but as part of disciplinary specific engagements. (shrink)

The contemporary astrophysicist today deals with questions that bear on the area known to traditional philosophy as “metaphysics.” Consequently, it is tempting to cross the threshold. One can allow oneself to be tempted by the idea that science is in a position to provide solutions to ancient and venerable metaphysical quests. One can even imagine, according to the wish expressed two thousand years ago by Epicurus, that it can calm our “metaphysical anxieties.”.

Philosophy of mystery -- Do we create our own mysteries? -- Do we know anything at all? -- What is reality? -- Why is there something rather than nothing? -- Why is nature ordered? -- Reductionism and emergence -- Does science dispel mystery? -- What of current mysteries in physics and cosmology? -- What of current mysteries in biology? -- What am i? -- What is consciousness? -- Do we have free will? -- Does god exist? -- Is there an (...) objective meaning to our lives? -- The mystery of the ordinary. (shrink)

HOW MUCH CAN A PERSON KNOW? A Leibnizian Perspective on Human Finitude. How much can someone possibly know? What could reasonably be viewed as an upper limit of an individual’s knowledge—supposing that factually informative knowledge rather than performative how-to knowledge or subliminally tacit knowledge is to be at issue?

Introduction: Western Marxism in Educational Philosophy and Theory -- Ideology and Schooling -- Marxism and Education: Will the Doctrine Bear the Weight? -- Education and Cultural Disadvantage -- Illich and Anarchism -- Knowledge and Ideology in the Marxist Philosophy of Education -- Liberal Education and Social Change -- The Continuing Conflicts Between Capitalism and Democracy: Ramifications for Schooling -- Luce Irigaray: Women becoming subjects for a divine economy -- The Nature and Limits of Critical Theory in Education -- (...) Class Dismissed? Historical materialism and the politics of 'difference' -- A Brief Commentary on the Hegelian-Marxist Origins of Gramsci's 'Philosophy of Praxis' -- Hope, political imagination, and agency in Marxism and beyond: Explicating the transformative worldview and ethico-ontoepistemology -- Knowledge socialism: the rise of peer production - collegiality, collaboration, and collective intelligence. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Ignorance, Knowledge, and Omniscience: At and Beyond the Limits of Faith and Reason after Shinran:Reflections on The Boundaries of Knowledge in Buddhism, Christianity, and Science, with Special Attention to Dennis HirotaAmos YongAlthough published in the series Religion, Theologie und Naturwissenschaft, Paul Numrich's edited volume is really about epistemology in religion and science, in particular about human knowing in Buddhist and Christian traditions shaped by the world (...) of science on the one hand, and how such knowing might also inform scientific knowledge on the other hand.1 The panoply of positions is presented by both Buddhist and Christian thinkers.From the Buddhist side, the following arguments are sketched:• that religion and science are complementary modes of knowing and that "understanding the true nature of the physical world" opens up "the way to enlightenment" (Trinh Xuan Thuan).2• that Buddhism is both continuous with (and hence deserving of serious consideration amidst) the epistemic discourses of modernity in many respects and yet also discontinuous with (and hence capable for critically interrogating) modernity's epistemology in other respects as well (David L. McMahan).3• that a Shin Buddhist approach to human knowledge—which in this chapter is brought into dialogue with Martin Heidegger's (1889-1976) notion of truth—opens up to a Kuhnian philosophy of science that emphasizes how paradigmatic shifts occur when new perspectives replace older frameworks (Dennis Hirota).4• that the questions raised by theoretical and quantum physics provide a scientific framework for discussing fundamental epistemological, ontological, and metaphysical questions that Buddhists and Christians might otherwise disagree about (Mark T. Unno).5From the Christian side, the following theses are explored: [End Page 201]• that boundary constraints confront not only working scientists but also Buddhists and Christians, and that these constraints can thus serve as a springboard for a science and religion "trilogue" (Paul O. Ingram).6• that the mystery of creative becoming (God, in traditional Christian terms) is the dynamic backdrop to the ongoing human quest for knowledge (Gordon D. Kaufman).7• that it is at the boundaries of knowledge that genuine creativity occurs (not only scientific creativity but also theological creativity emerges, i.e., the apophatic tradition of Eastern Orthodoxy or the theory of coincidentia oppositorum of Nicholas of Cusa [1401-1464]), and where, as a result of such creative approaches, distinct fields of inquiry open up and different domains of knowledge emerge (Antje Jackelén).8• that theological discourse is paradoxical precisely because such discourse marks the fluid boundaries demarcating sense and nonsense (Tom Christenson).9And, befitting a volume on the encounter between religion (i.e., Buddhism and Christianity) and science, there is a concluding chapter from a physicist on the limits of scientific knowledge that both is encouraged by the gains made by science (presuming a critical realist approach to science's modeling of reality) and yet also is honest about there being much more to learn on small and big questions (John R. Albright).10The foregoing summaries do not do justice to the complexity and sophistication of the chapters in the book. However, they provide a broader context for my interactions with Dennis Hirota's chapter on Shinran's (1173-1263) epistemology and its implications for both religious and scientific knowledge. As an evangelical Christian, I am particularly intrigued by the challenges confronting a Shin Buddhist approach to the sciences, even as I am hopeful that such a consideration will precipitate creative insights both for the Buddhist-Christian encounter and for the religion-science dialogue. I am all the more motivated since I have long been convinced that the religion-science dialogue has been dominated by generically religious approaches and that it is time for more particularistic or even confessional positions to be registered in the discussion.11 I am optimistic that the specificity of the Shin tradition will provide both complementary and contrasting perspectives to the contemporary Buddhist encounter with science that has so far been dominated by the broadly Tibetan approaches of His Holiness the Fourteenth Dalai Lama (1935-) and those in his circle of dialogue partners,12 and that this will in turn open up new trajectories—even initiate new paradigms, as Hirota suggests—for the Buddhist... (shrink)

It is doubtful that our age can lay claim to having formulated a significant moral ideal, but perhaps the most promising candidate is the ideal of pluralism. It involves rejection of the destructive quest for a summum bonum, and the growing recognition that the legitimate ends of life are many, that there is a wide variety of good and admirable lives, and that there is no blueprint drawn in heaven which would provide those who gained access to it with the (...) knowledge of how to live well. The implications of pluralism are many, and some of them are subversive of widely accepted values. The aim of this essay is to discuss one unsettling consequence of pluralism. Pluralism is a thesis about values, and it is part of this thesis that many values are incommensurable and conflicting. It is usual to interpret the plurality of incommensurable values, and the conflicts thereby produced, as obtaining within morality. Incommensurability is taken to hold between moral values, and the resulting conflicts are regarded as moral. Much has been written about this, and I do not propose to add to it. My interest is in discussing pluralism as it affects a particular type of conflict between moral and nonmoral values. Since it will be central to the discussion, I must now indicate what I mean by “moral” and “nonmoral” values. All values derive from benefits and harms to sentient beings, but I shall ignore other sentient beings here and concentrate on benefits and harms for human beings. (shrink)

We have learned to be suspicious of the claim that a serious account of knowledge must begin at the Cartesian starting point, that is, with private data of consciousness serving as a basis for outward inferences to the world, these inferences proceeding on the security of one or another kind of epistemic collateral ranging from the goodness of a deity to the bruteness of the given. But the good reasons we have for dismissing the egocentric predicament as our motive (...) for epistemology are not good reasons for dismissing a different predicament, one with which it is too often confused: namely, our finitary predicament, the fact that our powers of perception, memory and reason, even when co-operatively applied, are limited. For even if we are bound to conceive of general knowledge as the outcome of fundamental kinds of conceptual co-operation, the fact remains that our knowledge claims are underdetermined by the evidence we have for them; and that the framework, however collectively established, of what Quine calls our ‘immemorial theory’ of the world does not therefore protect particular knowledge-claims from defeasibility. (shrink)

Verificationism has been a hallmark of logical empiricism. According to this principle, a sentence is insignificant in a certain sense if its truth value cannot be determined. Although logical empiricists strove for decades to develop an adequate principle of verification, they failed to resolve its problems. This led to a general abandonment of the verificationist project in the early 1960s. In the last 50 years, this view has received tremendously bad press. Today it is mostly regarded as an outdated historical (...) concept. Theories that have evolved since the abandonment of verificationism can, however, help overcome some of its key problems. More specifically, an adequate criterion of significance can be derived from a combination of modern theories of justification and belief revision, along with a formal semantics for counterfactuals. In view of these potential improvements, the abandonment of verificationism appears premature. Half a century following its decline, it might be about time to revisit this disreputable view. The author argues in favor of a weak form of verificationism. This approach could be referred to as minimal verificationism, as it involves a weakening of traditional verificationist principles in various respects while maintaining their core idea. (shrink)

In this article, we discuss how we used institutional ethnography (Institutional ethnography as practice, Rowman & Littlefield, Lanham, MD and 2006) to map out powerful ruling relations that organize nurses’ wound care work. In recent years, the growing number of people living with wounds that heal slowly or not at all has presented substantial challenges for those managing the demands on Canada's publicly insured health‐care system. In efforts to address this burden, Canadian health‐care administrators and policy‐makers rely on scientific evidence (...) about how wounds heal and what treatments are most effective. Advanced wound care exemplifies the growing authorization of particular forms of evidence that change the ways in which nurses come to know about and conduct their work. The focus of this paper's nursing inquiry is a critique of registered nurses’ wound work as it arises within the established uptake of scientific evidence. (shrink)

How do we know what we "know"? How did we –as individuals and as a society – come to accept certain knowledge as fact? In _Human Knowledge,_ Bertrand Russell questions the reliability of our assumptions on knowledge. This brilliant and controversial work investigates the relationship between ‘individual’ and ‘scientific’ knowledge. First published in 1948, this provocative work contributed significantly to an explosive intellectual discourse that continues to this day.

In “Popper, Weber, and Hayek: The Epistemology and Politics of Ignorance,” Jeffrey Friedman argues that markets are superior to democratic institutions because the price system doesn't require people to make the kind of difficult counterfactual judgments that are necessary in order to evaluate public‐policy alternatives. I contend that real‐world markets require us to make all kinds of difficult counterfactual judgments, that the nature of these judgments limits the effectiveness of the price system in coordinating our activities, and that the (...) market participant who is capable of making reasonably good economic judgments can also become the kind of well‐informed citizen who is essential to democratic self‐government. (shrink)

In this article I look at the Buddha's refusal to answer certain questions in light of the dynamics of ancient Indian debate. Doing so foregrounds a dimension of the Buddha's interaction with his interlocutors that is central for understanding the problem of what are known as the Undetermined or Unanswered Questions: namely, the Buddha's knowledge and authority vis-à-vis rival teachers.

Perhaps no technological innovation has so dominated the second half of the twentieth century as has the introduction of the programmable computer. It is quite difficult if not impossible to imagine how contemporary affairs—in business and science, communications and transportation, governmental and military activities, for example—could be conducted without the use of computing machines, whose principal contribution has been to relieve us of the necessity for certain kinds of mental exertion. The computer revolution has reduced our mental labors by means (...) of these machines, just as the Industrial Revolution reduced our physical labor by means of other machines. (shrink)

Do all questions have answers? How much can we know about the world? Is there such a thing as an ultimate truth? To be human is to want to know, to understand our origins and the meaning of our lives. In The Island of Knowledge, physicist Marcelo Gleiser traces our search for answers to the most fundamental questions of existence, the origin of the universe, the nature of reality, and the limits of knowledge. In so doing, he (...) reaches a provocative conclusion: science, the main tool we use to find answers, is fundamentally limited. As science and its philosophical interpretations advance, we are often faced with the unsettling recognition of how much we don't know. Limits to our knowledge of the world arise both from our tools of exploration and from the nature of physical reality: the speed of light, the uncertainty principle, the second law of thermodynamics, the incompleteness theorem, and our own limitations as an intelligent species. Our view of physical reality depends fundamentally on who we are and on how we interact with the cosmos. (shrink)

Amidst the broad divergence in opinion of philosophers and scientists at understanding reality that has lent character to the historical epochs of the Philosophical enterprise, the crucial realization has always been, of the necessity of Epistemology in our entire program of making inquiry into ‘What Is’. This realization seems born out of the erstwhile problem of knowing. Epistemology, which investigates the nature, sources, limitations and validating of knowledge, offers a striking challenge here. Since we have no direct access to (...) our world around us, outside of the subjective experience offered us by our senses, we are handicapped at making comparisons of our beliefs with a concrete world, out there, or with elements of the world. Our statements about the world seem to stand alone, buffeted against the intimidating tide of possible contradicting circumstances. Our putative claims to knowledge, therefore, face the exigency of justification. Ayer, expressing the urgency of resolving this persisting lacuna, provides an alternative criterion of knowing, as ‘having the right to be sure’. Thus, it is this deep-seated concern that has evolved, over time, to become the primary thrust of the project of Epistemology, raising the controversy over which, of Epistemology or Metaphysics, is to be accorded the prime status of first philosophy. However, Aquinas is wise to build his epistemological premise on a firm metaphysical support, clarifying the needed development from being to knowledge. For, being has to first exist to constitute the object of perception, belief, and knowledge. Accordingly, our exposition of Aquinas’ epistemology will first take a cursory look at the theoretical and historical background to Aquinas’ Philosophy, before offering a general characterization of his theory of knowledge. Then, the paper will discuss his concept of sense perception as a basis for all knowing, followed closely by an analysis of cognition and Scientia. (shrink)

In this paper we identify and characterize an analysis of two problematic aspects affecting the representational level of cognitive architectures (CAs), namely: the limited size and the homogeneous typology of the encoded and processed knowledge. We argue that such aspects may constitute not only a technological problem that, in our opinion, should be addressed in order to build arti cial agents able to exhibit intelligent behaviours in general scenarios, but also an epistemological one, since they limit the plausibility of (...) the comparison of the CAs' knowledge representation and processing mechanisms with those executed by humans in their everyday activities. In the fi nal part of the paper further directions of research will be explored, trying to address current limitations and future challenges. (shrink)