The terms red, green, yellow, and blue are both necessary and sufficient to describe our chromatic experience. Their uniqueness and opponent nature is supported by evidence obtained under supra-threshold conditions, especially hue cancellation. These constraints are nontrivial. How some electrophysiologically identified mechanisms contribute to colour appearance is not known, but their complexities do not refute our experience of elemental hues.

This manuscript provides an overview of forensic DNA data banks and their use, with some focus on existing programs established in the U.S., Canada, and the U.K. The intent is to provide a constructive analysis of both strengths and weaknesses in performance, and especially to suggest directions for improvement. Implementation of these suggestions will be crucial to allow DNA data banks to be most effective in advancing societal goals of enhancing public safety and collective security.

This article offers a functionalist account of trust. It argues that a particular form of trust—Communicated Interpersonal Trust—is paradigmatic and lays out how trust as a social practice in this form helps to satisfy fundamental practical, deliberative, and relational human needs in mutually reinforcing ways. We then argue that derivative (non-paradigmatic) forms of trust connect to the paradigm by generating a positive dynamic between trustor and trustee that is geared towards the realization of these functions. We call this trust’s proleptic (...) potential. Our functionalist approach does not only provide important insights into the practice of trust and its place in the broader web of social life, but also illuminates existing philosophical debates. First, pointing out how opposing theoretical accounts of trust each capitalise on only one of its functions, our paradigm-based approach reveals why they each contain a kernel of truth but are also deficient: the optimal realization of each function is tied to the existence of the other functions as well. Second, we show how a functionalist re-orientation can illuminate two recent disputes regarding (i) the question whether trust is explanatorily two- or three-place and (ii) whether (and to what extent) we can decide to trust others. (shrink)

Recent years have witnessed the rise of digital platforms that allow economic agents to arrange ever more fine-grained contracts. This article zooms in on labour-based platforms that permit the hire of labour in a just-in-time fashion (and are part of the broader trend towards on-demand work). Its principal contribution comes in three parts. First, exposing the frequently overlooked diversity of labour-based platforms, the article proposes to distinguish platform companies, which directly sell services and then purchase the labour needed to provide (...) them, and broker platforms, which act merely as intermediaries. Second, it examines how platforms of each type pose distinct threats to labour justice, thereby extending Daniel Halliday's (2021) analysis. Drawing on empirical studies of the experiences of platform workers, it identifies a power imbalance as the root cause of these threats across all platforms. Finally, the article assesses three strategies to counter these threats: introducing stricter regulation, turning platforms into worker-run co-ops, and improving outside job opportunities. In exploring how each strategy could be implemented for specific platforms, it makes the case for always discussing labour-based platforms with one eye to their specific structural features and the other eye to the broader labour market. (shrink)

Modern views of poetry tend to concord with Wallace Stevens’s insistence that “God and the imagination are one,” assuming that the only meaning there is in the natural world is that which the poet makes. But Denise Levertov held instead that the poet’s word is a response to the beauty of the world as given by God, and that the poet’s task is to invite the reader to resonate with that experience. Drawing on current research from neurocognitive poetics that indicates (...) how readers experience beauty in language, this essay seeks to demonstrate how Levertov’s poem, “O Taste and See,” embodies an invitation for the reader to engage one’s senses in the discovery of God through the beauty of poetry and created being. (shrink)

Purpose. To examine the existential anthropology of G. Marcel and E. Minkowski, in order to demonstrate the necessity of distinguishing the universal-spiritual, as human in human being, apart from the individual-existential in him, and to reveal the hierarchical correlation of biosocial, existential and spiritual spheres in personality. Theoretical basis. Within existential philosophy the author differentiates two separate traditions and proceeds from the insufficiency of the distinction of existential sphere, proposed by phenomenological tradition, showing the necessity of its correlation with the (...) spiritual sphere as a sphere of humanity, proposed by non-phenomenological tradition of G. Marcel and E. Minkowski. Originality. The author presents the anthropological conception of G. Marcel and E. Minkowski, in which human personality is understood as unity of individual-existential and universal-spiritual, which requires a special trans-empirical field of culture, which contains senses, images and symbols of humanity. Also, the author presents the recent developments of existential thinkers in distinguishing existential and spiritual dimensions, both not reducible to the physical and social dimensions. Conclusions. In both existential traditions, the specifically human was founded as a trans-biological and trans-social phenomenon, which appears as indefinable and non-predetermined. But in first tradition, humanity is understood as an existence, as a unique individuality, "project", variant of humanity, equivalent to other variants, and universal is understood as a community of human condition in the world. While in the second tradition, the universal is understood as spiritual. Thus, horizontal level of our private existence, as the process of movement from birth to death, is supplemented by vertical of human, universal ideals and images. Humanity appears as a task, on the way to which human being transcends beyond the limits of his individual "self" to the "super-individual", through inclusion into spiritual community, into universal culture. (shrink)

Michael Choniates (c. 1138–c. 1222), a pupil of Eustathius of Thessalonica, who was Greek Orthodox Metropolitan of Athens for some 25 years up to that city's capture by Frankish crusaders ina.d.1205, is best known to classical scholars as the possessor of probably the last complete copy of Callimachus'HecaleandAetia. He had brought with him from Constantinople many books of all kinds, and added to his collection when in Athens. Although an immense task, it would be well worth trying to identify all (...) Michael's classical allusions, as an indication of how much ancient Greek literature was still available just before Constantinople too succumbed to the crusaders. (shrink)

Both and are guaranteed by the London scholia , so the gap is reduced to the tantalizingly small one of a monosyllabic feminine noun in the accusative case, most probably of four letters. The number of possibilities cannot be unlimited. My own suggestion must necessarily remain in limbo in the present state of our knowledge concerning the poet or poets whom Callimachus is talking about, but at least it seems to me less bizarre than other restorations currently in the field.

Singularity Hypotheses: A Scientific and Philosophical Assessment offers authoritative, jargon-free essays and critical commentaries on accelerating technological progress and the notion of technological singularity. It focuses on conjectures about the intelligence explosion, transhumanism, and whole brain emulation. Recent years have seen a plethora of forecasts about the profound, disruptive impact that is likely to result from further progress in these areas. Many commentators however doubt the scientific rigor of these forecasts, rejecting them as speculative and unfounded. We therefore invited prominent (...) computer scientists, physicists, philosophers, biologists, economists and other thinkers to assess the singularity hypotheses. Their contributions go beyond speculation, providing deep insights into the main issues and a balanced picture of the debate. (shrink)

This introduction to the basic ideas of structural proof theory contains a thorough discussion and comparison of various types of formalization of first-order logic. Examples are given of several areas of application, namely: the metamathematics of pure first-order logic (intuitionistic as well as classical); the theory of logic programming; category theory; modal logic; linear logic; first-order arithmetic and second-order logic. In each case the aim is to illustrate the methods in relatively simple situations and then apply them elsewhere in much (...) more complex settings. There are numerous exercises throughout the text. In general, the only prerequisite is a standard course in first-order logic, making the book ideal for graduate students and beginning researchers in mathematical logic, theoretical computer science and artificial intelligence. For the new edition, many sections have been rewritten to improve clarity, new sections have been added on cut elimination, and solutions to selected exercises have been included. (shrink)

Provability, Computability and Reflection.