This article undertakes a deconstructive reading of astrobiology’s search for extraterrestrial life. Taking its lead from Derrida’s ‘White Mythology’, it explores ‘metaphor in the text of astrobiology’—and includes within the astrobiological ‘text’ not only scientific publications and work on astrobiology in the philosophy of science, but also ‘life detection technologies’. I situate astrobiology in the tradition of a metaphysical analogy that goes back through the enlightenment and early modern astronomy to the ancient Atomists’ notion of the ‘plurality of worlds’. This (...) analogy, which constitutes an identification of life with being and therefore serves as the conceptual basis for the notion that life must exist on other worlds, experiences a mutation in the middle of the twentieth century when molecular biology refigures life in terms of a scriptural metaphor as text. The result is an aporia whose logic Derrida formalised in ‘White Mythology’. (shrink)

This article aims to highlight the theoretical and philosophical debate on hospitality underlining the normative elements of framing migrants and refugees as individual agents in the light of hospitality theory and migration governance. It argued the critiques of the neo-Kantian hospitality approach and the EU welcome culture with regard to refugees in the EU from a philosophical perspective. The “No human being is illegal” motto is proposed to be conceived as a principle of the EU Charter of Fundamental Rights. The (...) cosmopolitan right to visit and the universal right to reside were discussed in the context of human rights and co-responsibility. Linking the hospitality approach with migration governance enables the reconstruction of reception policies and practices, diversification of non-state actors that engage in migration governance mechanism, and polarization of political initiatives (e.g., politics of allocation and dispersal, readmission negotiations, convergence/divergence of priorities and strategic interests). The research findings highlight that the EU adopted a neo-Kantian hospitality approach that combines both “co-responsibility” and “vertical/heterarchical relations.” The EU’s “New Pact on Migration and Asylum” was considered proof of how the EU follows neo-Kantian hospitality that is manifested in dualism and contradictory approach. The study presents a typology that splits co-responsibility into individual/institutional actions and human rights/migration governance. (shrink)

The question of whether knowledge is definable in terms of belief, which has played an important role in epistemology for the last 50 years, is studied here in the framework of epistemic and doxastic logics. Three notions of definability are considered: explicit definability, implicit definability, and reducibility, where explicit definability is equivalent to the combination of implicit definability and reducibility. It is shown that if knowledge satisfies any set of axioms contained in S5, then it cannot be explicitly defined in (...) terms of belief. S5 knowledge can be implicitly defined by belief, but not reduced to it. On the other hand, S4.4 knowledge and weaker notions of knowledge cannot be implicitly defined by belief, but can be reduced to it by defining knowledge as true belief. It is also shown that S5 knowledge cannot be reduced to belief and justification, provided that there are no axioms that involve both belief and justification. (shrink)

Phillips & Silverstein (P&S, 2003) propose that NMDA-receptor dysfunction may be the fundamental neurobiological mechanism underlying and associating impaired holistic perception and cognitive coordination with schizophrenic psychopathology. We discuss how the P&S hypothesis shares different aspects of the weak central coherence account of autism from both theoretical and experimental perspectives. Specifically, we believe that neither those persons with autism nor those with schizophrenia integrate visuo-perceptual information efficiently, resulting in incongruous internal representations of their external world. However, although NMDA-hypofunction may be (...) responsible for perceptual impairments in schizophrenia and possibly autism, we suggest that it is highly unlikely that NMDA-hypofunction is specifically responsible for the autistic behavioral symptomology, as described by P&S in their target article. (shrink)

We propose communication pattern logic. A communication pattern describes how processes or agents inform each other, independently of the information content. The full-information protocol in distributed computing is the special case wherein all agents inform each other. We study this protocol in distributed computing models where communication might fail: an agent is certain about the messages it receives, but it may be uncertain about the messages other agents have received. In a dynamic epistemic logic with distributed knowledge and with modalities (...) for communication patterns, the latter are interpreted by updating Kripke models. We propose an axiomatization of communication pattern logic, and we show that collective bisimilarity (comparing models on their distributed knowledge) is preserved when updating models with communication patterns. We can also interpret communication patterns by updating simplicial complexes, a well-known topological framework for distributed computing. We show that the different semantics correspond, and propose collective bisimulation between simplicial complexes. (shrink)

In this essay, a brief analysis of the diplomatic efforts to achieve an accord in re- lation to the climatic change process is made. Particularly, it will analyze the two past Climate Summits (Copenhagen and Cancun). It emphasizes the growing social articulation of climatic politics. Finally, it aims to the birth of a new global responsibility of societies in relation to the human relation towards the planet. Also, it explores the impact of this responsibility on the environment global changes.

Reasoning About Knowledge is the first book to provide a general discussion of approaches to reasoning about knowledge and its applications to distributed ...

After revelations of participation by psychiatrists and psychologists in interrogation of prisoners at Guantánamo Bay and Central Intelligence Agency secret detention centers, the American Psychiatric Association and the American Psychological Association adopted Position Statements absolutely prohibiting their members from participating in torture under any and all circumstances, and, to a limited degree, forbidding involvement in interrogations. Some interrogations utilize very aggressive techniques determined to be torture by many nations and organizations throughout the world. This paper explains why psychiatrists and psychologists (...) involved in coercive interrogations violate the Geneva Conventions and the laws of the United States. Whether done with ignorance of professional ethical obligations or not, these psychiatrists and psychologists have crossed an ethical barrier that may best be averted from re-occurring by teaching medical students and residents in all medical specialties about the ethics principles stemming from the 1946–1947 Nuremberg trials and the Geneva Conventions, together with the Ethics Codes of the World Medical Association and the American Medical Association; and, with regard to psychiatric residents and psychological trainees, by the teaching about The Principles of Medical Ethics With Annotations Especially Applicable to Psychiatry and the Ethical Principles of Psychologists and Code of Conduct, respectively. In this way, all physicians and psychologists will clearly understand that they have an absolute moral obligation to "First, do no harm" to the human beings they professionally encounter. (shrink)

The complete description of the interaction between an external electromagnetic field and a charged particle causing it to radiate is one of the most fundamental problems in classical electrodynamics. Here we provide a simple coupled model that describes via the Lagrangian of the physical system the full radiation reaction process resulting from the particle–field interactions which simulate the electromagnetic ones. The particle and field evolution equations obtained from the Lagrangian are studied as an initial value problem giving rise to the (...) particle's radiation reaction equation, which includes the complete interaction with the field. Using stability theory we analyze this equation and prove that every solution is global uniform asymptotically stable, evidencing that the particle coupled to the field radiates. The model proves to be interesting, for it clearly illustrates the particle–field interaction process and shows the radiation's origin. (shrink)

Most model checking techniques for security protocols make a number of simplifying assumptions on the protocol and/or on its execution environment that greatly complicate or even prevent their applicability in some important cases. For instance, most techniques assume that communication between honest principals is controlled by a Dolev-Yao intruder, i.e. a malicious agent capable to overhear, divert, and fake messages. Yet we might be interested in establishing the security of a protocol that relies on a less unsecure channel (e.g. a (...) confidential channel provided by some other protocol sitting lower in the protocol stack). In this paper we propose a general model for security protocols based on the set-rewriting formalism that, coupled with the use of LTL, allows for the specification of assumptions on principals and communication channels as well as of complex security properties that are normally not handled by state-of-the-art security protocol analysers. By using our approach we have been able to formalise all the assumptions required by the ASW protocol for optimistic fair exchange and some of its key security properties. Besides the previously reported attacks on the protocol, we report a new attack on a patched version of the protocol. (shrink)

The Covid‐19 crisis has accelerated a trend toward burnout in health care workers, making starkly clear that burnout is especially likely when providing health care is not only stressful and sad but emotionally alienating; in such situations, there is no mental space for clinicians to experience authentic clinical empathy. Engaged curiosity toward each patient is a source of meaning and connection for health care providers, and it protects against sympathetic distress and burnout. In a prolonged crisis like Covid‐19, clinicians provide (...) care out of a sense of duty, especially the duty of nonabandonment. We argue that when duty alone is relied on too heavily, with fear and frustration continually suppressed, the risk of burnout is dramatically increased. Even before Covid‐19, clinicians often worked under dehumanizing and unjust conditions, and rates of burnout were 50 percent for physicians and 33 percent for nurses. The Covid‐19 intensification of burnout can serve as a wake‐up call that the structure of health care needs to be improved if we are to prevent the loss of a whole generation of empathic clinicians. (shrink)

The Venezuelan-Chilean humanist Andrés Bello has been recognized as one of the most distinguished intellectuals of the 19th century—one of the last polymaths of the stature of figures such as Athanasius Kircher, Gottfried Leibniz or Benjamin Franklin. Indeed, his numerous contributions span fields such as grammar, poetry, civil law, diplomacy, education, political theory, philology and philosophy. However, despite having composed one of the most important philosophical treatises ever written in Spanish, his philosophical proposals have not been engaged with a substantial (...) way by scholars of the Anglophone world. Only a few scholars such as... (shrink)

En las últimas décadas un sector de la Iglesia católica latinoamericana ha impulsado la idea de conformar una Iglesia con rostro indígena, en la cual los indígenas se incorporen a la estructura eclesiástica a través de algunos cargos como catequista o diácono. Algunos incluso han propuesto la ordenación de sacerdotes indígenas que, de acuerdo a la cosmovisión de los indígenas, deben ser casados. El presente artículo tiene el objetivo revisar, desde la perspectiva de la historización de los conceptos propuesta por (...) Ellacuría, el aporte teóricopráctico realizados por la Compañía de Jesús, en particular tres religiosos ignacianos —Xavier Albó, Manuel Marzal y Bartomeu Melià— a dicho proceso. Como se verá a lo largo del texto, ha sido un camino lleno de avances y retrocesos. En el ámbito teórico, los jesuitas han defendido la idea de que la inculturación es el mejor camino para que la Iglesia logre una verdadera inserción en la realidad de las comunidades indígenas. En el terreno práctico se explora la experiencia de los diáconos indígenas en dos regiones: en la zona aymara de los Andes —especialmente en Bolivia— y en la Misión de Bachajón, Chiapas. Ambas experiencias con resultados disimiles, pero que enriquecen el caminar de la Iglesia con rostro indígena. (shrink)

Dal silenzio-assenso al subappalto, dagli acquisti di beni e servizi informatici alla transizione digitale e alle infrastrutture di telecomunicazione, passando per la nuova Cilas e dalle misure ambientali ed energetiche (cui è dedicato un inserto staccabile), la guida del Sole - In funzione della fondamentale accelerazione attuativa del PNRR - dettaglia tutte le novità del Dl Semplificazioni bis e quelle di recente introdotte in materia di rapporto di lavoro dai due decreti Sostegni e dal Green pass allargato (Dl 127/2021).