Many-valued logics, philosophical issues in

Author(s):  
Lloyd Humberstone

The first philosophically-motivated use of many-valued truth tables arose with Jan Łukasiewicz in the 1920s. What exercised Łukasiewicz was a worry that the principle of bivalence, ‘every statement is either true or false’, involves an undesirable commitment to fatalism. Should not statements about the future whose eventual truth or falsity depends on the actions of free agents be given some third status – ‘indeterminate’, say – as opposed to being (now) regarded as determinately true or determinately false? To implement this idea in the context of the language of sentential logic (with conjunction, disjunction, implication and negation), we need to show – if the usual style of treatment of such connectives in a bivalent setting is to be followed – how the status of a compound formula is determined by the status of its components. Łukasiewicz’s decision as to how the appropriate three-valued truth-functions should look is recorded in truth tables in which (determinate) truth and falsity are represented by ‘1’ and ‘3’ respectively, with ‘2’ for indeterminacy (see tables in the main body of the entry). Consider the formula A∨B (‘A or B’), for example, when A has the value 2 and B has the value 1. The value of A∨B is 1, reasonably enough, since if A’s eventual truth or falsity depends on how people freely act, but B is determinately true already, then A∨B is already true independently of such free action. There are no constraints as to which values may be assigned to propositional variables. The law of excluded middle is invalidated in the case of indeterminacy: if p is assigned the value 2, then p∨ ¬p also has the value 2. This reflects Łukasiewicz’s idea that such disjunctions as ‘Either I shall die in a plane crash on January 1, 2030 or I shall not die in a plane crash on January 1, 2030’ should not be counted as logical truths, on pain of incurring the fatalistic commitments already alluded to. Together with the choice of designated elements (which play the role in determining validity played by truth in the bivalent setting), Łukasiewicz’s tables constitute a (logical) matrix. An alternative three-element matrix, the 1-Kleene matrix, involves putting 2→2=2, leaving everything else unchanged. And a third such matrix, the 1,2-Kleene matrix, differs from this in taking as designated the set of values {1,2} rather than {1}. The 1-Kleene matrix has been proposed for the semantics of vagueness. In the case of a sentence applying a vague predicate, such as ‘young’, to an individual, the idea is that if the individual is a borderline case of the predicate (not definitely young, and not definitely not young, to use our example) then the value 2 is appropriate, while 1 and 3 are reserved for definite truths and falsehoods, respectively. Łukasiewicz also explored, as a technical curiosity, n-valued tables constructed on the same model, for higher values of n, as well as certain infinitely many-valued tables. Variations on this theme have included acknowledging as many values as there are real numbers, with similar applications to vagueness and approximation in mind.

2008 ◽  
pp. 110-134
Author(s):  
Pavlo Yuriyovych Pavlenko

The cornerstone of any religion is its anthropological concept, which seeks to determine the essential orientations of man, to outline the ideological framework of its existence, to represent the idea of ​​its essence, purpose in earthly life. The main task of the religious system is the act of involving and subordinating man to the spiritual divine realm as the realm of the transcendental existence of God. Belief in the real presence of the latter implies a new understanding of oneself, which ultimately leads the religious individual to the desire to be involved in this transcendental existence, to have intimate relations with him, to have a consciousness inherent in God. Note that in this context, all human being is interpreted as a certain arena for this realization. Therefore, the religious life of the individual acquires the status of religious activity.


Author(s):  
Rachel Ablow

The nineteenth century introduced developments in science and medicine that made the eradication of pain conceivable for the first time. This new understanding of pain brought with it a complex set of moral and philosophical dilemmas. If pain serves no obvious purpose, how do we reconcile its existence with a well-ordered universe? Examining how writers of the day engaged with such questions, this book offers a compelling new literary and philosophical history of modern pain. The book provides close readings of novelists Charlotte Brontë and Thomas Hardy and political and natural philosophers John Stuart Mill, Harriet Martineau, and Charles Darwin, as well as a variety of medical, scientific, and popular writers of the Victorian age. The book explores how discussions of pain served as investigations into the status of persons and the nature and parameters of social life. No longer conceivable as divine trial or punishment, pain in the nineteenth century came to seem instead like a historical accident suggesting little or nothing about the individual who suffers. A landmark study of Victorian literature and the history of pain, the book shows how these writers came to see pain as a social as well as a personal problem. Rather than simply self-evident to the sufferer and unknowable to anyone else, pain was also understood to be produced between persons—and even, perhaps, by the fictions they read.


2020 ◽  
Vol 3 (3) ◽  
pp. 121-138
Author(s):  
Dr. Bilal Ahmad Khan

Islamic economics based on specific concept of universe and the creation of man is contradictory to the concept adopted and accepted by modern science. Islamic economics postulates although ability and expertise is required for progress and growth but distribution of resources completely dependent on it would be cruel, inhuman and bereft of kindness, and lead to oppression. Islamic economics does not favor making human ability and expertise the fulcrum of resource distribution. It should be kind, considerate and based on justice and fairness. This is because according to Islamic philosophy, ownership is considered to be a trust from Allah which has been bestowed on the rich so that they may utilize it correctly. In Islamic economics the role of the individual, has inclinations and his aims and objectives occupy a central position and are vitally important. He is definitely a rational being but his level of rationality is not confined to the calculations of cost and profit. An individual does not want merely to obtain monetary profit and physical pleasure and leisure but he also wants and aims for something beyond what the material world has to offer. The main aim of the study is to find out the relationship between Islam and economics. In Islamic economics the comprehensive moral training of the individual, his technical and educational ability, his aims and his priorities are of primary importance. According to Islamic economics the means of acquiring wealth has the same importance as wealth itself. Dishonesty, abuse of trust and earning of wealth through fraudulent ways and means may perhaps increase the status of an individual but the society suffers because of it on the whole. This leads to an unjust and oppressive economic system.


Author(s):  
Alan Cooper

This chapter discusses three aspects of Jewish reception of the Ketuvim (Writings or Hagiographa): the status and authority of the Ketuvim in relation to the Torah (Pentateuch) and the Nevi’im (Prophets); the study and liturgical use of Ketuvim, focusing on the so-called Five Scrolls (hamesh megillot) and the Book of Psalms; and the character of traditional commentary on selected books, including recommendations for further reading. The Ketuvim were considered sacred and inspired, but at a lower level of inspiration than the Torah and the Prophets. They were regarded as diverting and edifying, but insufficiently authoritative to support the promulgation of law, which was the fundamental concern of rabbinic teaching and learning. On the whole, Jewish commentators seek to find consistency in the interpretation of the individual books, “taming” their originality in order to conform their meanings both to the rest of Scripture and to normative Jewish teachings.


2021 ◽  
Vol 37 (1) ◽  
Author(s):  
Gerhard Johan Klopper ◽  
Oladele Vincent Adeniyi ◽  
Kate Stephenson

Abstract Background The larynx has multiple composite functions which include phonation, airway protection, and sensory control of respiration. Stenosis of the larynx and trachea were first recorded by O’Dwyer in 1885 and by Colles in 1886, respectively. Initially, the aetiology of laryngotracheal stenosis was predominantly infective. Currently, the leading cause is iatrogenic injury to the laryngotracheal complex secondary to prolonged ventilation in an intensive care unit. Main body Laryngotracheal stenosis is a complex and diverse disease. It poses a major challenge to the surgeon and can present as an airway emergency. Management typically demands the combined involvement of various disciplines including otorhinolaryngology, cardiothoracic surgery, anaesthesiology, interventional pulmonology, and radiology. Both the disease and its management can impact upon respiration, voice, and swallowing. The incidence of iatrogenic laryngotracheal stenosis has reflected the evolution of airway and intensive care whilst airway surgery has advanced concurrently over the past century. Correction of laryngotracheal stenosis requires expansion of the airway lumen; this is achieved by either endoscopic or open surgery. We review the relevant basic science, aetiopathogenesis, diagnosis, management, and treatment outcomes of LTS. Conclusion The choice of surgical procedure in the management of laryngotracheal stenosis is often dictated by the individual anatomy and function of the larynx and trachea, together with patient factors and available facilities. Regardless of how the surgeon chooses to approach these lesions, prevention of iatrogenic laryngotracheal damage remains of primary importance.


Author(s):  
James Aaron Green

Abstract In Geological Evidences of the Antiquity of Man (1863), Charles Lyell appraised the distinct contribution made by his protégé, Charles Darwin (On the Origin of Species (1859)), to evolutionary theory: ‘Progression … is not a necessary accompaniment of variation and natural selection [… Darwin’s theory accounts] equally well for what is called degradation, or a retrogressive movement towards a simple structure’. In Rhoda Broughton’s first novel, Not Wisely, but Too Well (1867), written contemporaneously with Lyell’s book, the Crystal Palace at Sydenham prompts precisely this sort of Darwinian ambivalence to progress; but whether British civilization ‘advance[s] or retreat[s]’, her narrator adds that this prophesized state ‘will not be in our days’ – its realization exceeds the single lifespan. This article argues that Not Wisely, but Too Well is attentive to the irreconcilability of Darwinism to the Victorian ‘idea of progress’: Broughton’s novel, distinctly from its peers, raises the retrogressive and nihilistic potentials of Darwin’s theory and purposes them to reflect on the status of the individual in mid-century Britain.


2021 ◽  
Vol 26 (1) ◽  
Author(s):  
Luisa V. Giles ◽  
Michael S. Koehle ◽  
Brian E. Saelens ◽  
Hind Sbihi ◽  
Chris Carlsten

Abstract Background The physical environment can facilitate or hinder physical activity. A challenge in promoting physical activity is ensuring that the physical environment is supportive and that these supports are appropriately tailored to the individual or group in question. Ideally, aspects of the environment that impact physical activity would be enhanced, but environmental changes take time, and identifying ways to provide more precision to physical activity recommendations might be helpful for specific individuals or groups. Therefore, moving beyond a “one size fits all” to a precision-based approach is critical. Main body To this end, we considered 4 critical aspects of the physical environment that influence physical activity (walkability, green space, traffic-related air pollution, and heat) and how these aspects could enhance our ability to precisely guide physical activity. Strategies to increase physical activity could include optimizing design of the built environment or mitigating of some of the environmental impediments to activity through personalized or population-wide interventions. Conclusions Although at present non-personalized approaches may be more widespread than those tailored to one person’s physical environment, targeting intrinsic personal elements (e.g., medical conditions, sex, age, socioeconomic status) has interesting potential to enhance the likelihood and ability of individuals to participate in physical activity.


2021 ◽  
Vol 51 (1) ◽  
pp. 3-23
Author(s):  
Thomas Crew

In this essay I consider the theme of individuation or self-becoming in Nietzsche’s Ecce Homo (1888) and Hesse’s Demian (1917) and Steppenwolf (1927). Although this task appears inter-disciplinary, Nietzsche’s autobiography can be considered a Bildungsroman in which ‘Nietzsche’ plays the protagonist. After showing the correspondences between Nietzsche’s and Hesse’s diagnoses of contemporary Europe, which can be summed up with the notion of ‘decadence’ or nihilism, I suggest that they both point towards the process of self-becoming as the ultimate remedy for both the individual and society. Self-becoming is a painful yet necessary process that holds the repeated destruction of the individual’s identity as the precondition for attaining the status of human being. It is a process implied by Nietzsche’s ‘formula for human greatness’: amor fati. Resistance to individuation leads to a state of ‘miserable ease’, embodied by what Hesse calls the ‘bourgeois’ and what Nietzsche terms the ‘last men’.


2003 ◽  
Vol 51 (1) ◽  
pp. 1-19 ◽  
Author(s):  
John Offer

Herbert Spencer remains an important and intriguing figure in thinking about political, social and moral matters. At present his writings in relation to idealist thought, social policy, sociology and ethics are undergoing reassessment. This article is concerned with some recent interpretations of Spencer on individuals in social life. It looks in some detail at Spencer's work on psychology and sociology as well as on ethics, seeking to establish how Spencer understood people as social individuals. In particular the neglect of Spencer's denial of freedom of the will is identified as a problem in some recent interpretations. One of his contemporary critics, J.E. Cairnes, charged that Spencer's own theory of social evolution left even Spencer himself the status of only a ‘conscious automaton’. This article, drawing on a range of past and present interpretative discussions of Spencer, seeks to show that Spencerian individuals are psychically and socially so constituted as to be only indirectly responsive to moral suasion, even to that of his own Principles of Ethics as he himself acknowledged. Whilst overtly reconstructionist projects to develop a liberal utilitarianism out of Spencer to enliven political and philosophical debate for today are worthwhile – dead theorists have uses – care needs to be taken that the original context and its concerns with the processes associated with innovation (and decay) in social life are not thereby eclipsed, the more so since in some important respects they have recently received little systematic attention even though the issues have contemporary relevance in sociology.


Author(s):  
Thomas Teo

Critical psychology comprises a broad range of international approaches centered around theories and practices of critique, power, resistance, and alternatives of practice. Although critical psychology had an axial age in and around the 1970s, many sources can be found decades and even centuries earlier. Critical psychology is not only about the critique of psychology, which is a broader historical and theoretical field, but about doing justice in and through theory, justice with and to groups of people, and justice to the reality of society, history, and culture as they powerfully constitute subjectivity, as well as the discipline and profession of psychology. Doing justice in and through psychological theory has a strong basis in Western critical approaches, representing a privileged position of reflection in Euro-American research institutions. Critical psychologists argue that traditional psychology is missing its subject matter and hence is not doing justice in methodology, and its practices of control and adjustment are not doing justice to the emancipatory possibilities of human agency or human science. Critical psychologists who are attempting to do justice with and to human beings are not neglecting the onto-epistemic-ethical domain, but are instead focusing on people, often marginalized or oppressed groups. Critical psychologists who want to do justice in history, culture, and society have argued that traditional psychological practice means adaption and adjustment. This means that not only subjectivity, but also the discipline and profession of psychology need to be connected with contexts. Psychologists have attempted to conceptualize the relationship between society and the individual, as well as the ability of humans not only to adapt to an environment but to change their living conditions and transform the status quo. This conceptualization also means providing concrete analyses of how current society, based in neoliberal capitalism, not only impacts individuals but also the discipline of psychology. Despite the complexities of critical psychology around the world, critical psychologists emphasize the importance of reflexivity and praxis when it comes to changing the conditions of social reality that create mental life. Given that subjectivity cannot be limited to intra-psychological processes, critical psychologists attend to relational and structural societal realities, requiring inter- and transdisciplinarity in the discipline and profession.


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