It is argued that consciousness studies suffer from a Problem of Essentialism. In response, it is proposed that definitions of consciousness be treated as stipulative definitions. Some example definitions and their relevance for scientific inquiry are discussed.

La nature de la conscience est au centre de la discussion actuelle sur la personne humaine. Bien que certains philosophes fassent de la conscience la clef fondamentale et de toute l'épistémologie, la plupart des scientifiques la réduisent aux intéractions complexes du cerveau. Le présent article tire sa matière de l'analyse que saint Thomas d'Aquin fait de cette notion dans son De Veritate . Il caractérise la conscience en termes de connaissance et d'application de la connaissance à l'agir. L'A. cherche à (...) donner une définition pour montrer que la conscience dépend directement d'un syllogisme pratique. (shrink)

in Encyclopedia of Consciousness, ed. William P. Banks, Amsterdam: Elsevier, forthcoming in 2009.

The mind when posing the question “what is consciousness?” (i.e. “The Hard Problem of Consciousness”, THPOC) will encounter an unsurmountable conflict of interest. The hope that by investigating the “neural correlates to consciousness” (NCCs) one might come to a “scientific (conceptual)” definition of consciousness is then paradoxical. In fact, the investigation of NCCs might unveil only “operational” (functional) properties of the mind. Nevertheless, the pieces of information deriving from these investigations seem to be striking. To (...) this respect, there is a growing evidence of a dual-state activity in mind, corresponding to the activities of a conscious (explicit) mind (C) and an unconscious (implicit) mind (U), respectively; moreover, C and U do not share any conceptual connection with psychoanalytic Conscious and Unconscious. In detail, C is the domain where thoughts (as well as images and music) can be managed; instead, U exhibits a biophysical/biochemical activity. In order to communicate with each other, a transduction of one language into the other must reciprocally occur; it is notable that the investigation of NCCs leads to the conclusion that it is right that transduction process accounts for the unsurmountable question about THPOC. Moreover, it is demonstrated that the dual state activity in mind stands on a probabilistic-deterministic mechanism; this functional property of the mind is incompatible with the existence of free-will (FW) but not with C’s FW illusion. In summary in the current literature, there is a unique cognitive model that is compatible with all these evidences, i.e. “The Bignetti Model” (TBM). (shrink)

in Encyclopedia of Consciousness, ed. William P. Banks, Amsterdam: Elsevier, forthcoming in 2009.

The meaning of consciousness, has interested thinkers throughout recorded time, and yet it is quite obvious that its understanding is still exceedingly remote. This is evident from the fact that even the presently used definitions give rise to contradictions. As implied by the title, the purpose of this paper is to remove some of the main difficulties concerned with this definition by using epistemological methods which have recently been developed. It is hoped that by clarifying the definition (...) of consciousness, or, more accurately, by clarifying the process leading to a scientifically rigorous definition of consciousness, some of the paradoxes surrounding the concept might be removed. (shrink)

The objective of this study is to present a new argument for understanding the philosophical roots of Abū al-Qāsim al-Junayd’s (d. 909/297) ambiguous definition of monotheism (tawḥīd). Al-Junayd defines tawḥīd in terms of separating the eternally existing (qadīm) from the temporally generated (muḥdath). This study argues that Plato’s distinction between “that which is and always is” and “that which comes to be and never is” in the Timaeus better clarifies neglected aspects of al-Junayds’s definition than the orthodox Neo-Platonic (...) interpretation put forward by Ali Hassen Abdel Kader. Given the lacuna of historically decisive textual evidence in support of either interpretation, this study will demonstrate how the Platonic distinction, which was widely circulating in the theological and philosophical circles of the ninth and early tenth century Baghdad, better furnishes a more coherent interpretation of al-Junayd’s positions. The first part of the study suggests that al-Junayd’s definition of tawḥīd could best be described as a creatively epistemic appropriation and development of the Platonic essentially metaphysical distinction. Through a careful examination of his theory of self-consciousness, the second part of the study explains how al-Junayd developed his epistemic definition of tawḥīd in response to the charges of pantheism addressed to Sufisms. This examination will further support my claim that a Platonic, rather than a Neo-Platonic, framework better explains the philosophical foundation of al-Junayd’s conception and definition of monotheism. I conclude by indicating how this study’s results contribute to the larger scholarship on philosophy and formation of early Sufism. (shrink)

This paper aims to uncover where the disagreement between illusionism and anti-illusionism about phenomenal consciousness lies fundamentally. While illusionists claim that phenomenal consciousness does not exist, many philosophers of mind regard illusionism as ridiculous, stating that the existence of phenomenal consciousness cannot be reasonably doubted. The question is, why does such a radical disagreement occur? To address this question, I list various characterisations of the term “phenomenal consciousness”: (1) the what-it-is-like locution, (2) inner ostension, (3) thought (...) experiments such as philosophical zombies, inverted qualia and Mary’s room, (4) scientific knowledge about secondary properties, (5) theoretical properties such as being ineffable and being intrinsic, and (6) appearance/reality collapse. Then I examine whether each characterization provides (i) a dubitable sense of phenomenal consciousness in which the existence of phenomenal consciousness can be reasonably doubted, (ii) an indubitable sense in which its existence cannot be reasonably doubted, or (iii) a gray sense in which it is controversial whether its existence can be reasonably doubted. By doing so, I show that there is no single sense of phenomenal consciousness in which illusionists and anti-illusionists disagree whether the existence of phenomenal consciousness can be reasonably doubted. I conclude that the disagreement between illusionists and anti-illusionists is fundamentally terminological: while illusionists adopt a dubitable sense of phenomenal consciousness, anti-illusionists adopt an indubitable sense of phenomenal consciousness. Because of the extreme vagueness and ambiguity of the term “phenomenal consciousness”, illusionists and anti-illusionists fail to see that they talk about different senses of phenomenal consciousness. (shrink)

Neural correlates of consciousness (for brevity NCC) are foundational to the scientific study of consciousness. Chalmers (2000) has provided the most informative and influential definition of NCC, according to which neural correlates are minimally sufficient for consciousness. However, the sense of sufficiency needs further clarification since there are several relevant senses with different entailments. In section one of this article, we give an overview of the desiderata for a good definition of NCC and Chalmers’s (...) class='Hi'>definition. The second section analyses the merit of understanding the sufficiency of neural correlates for corresponding consciousness according to three relevant types of sufficiency: logical, metaphysical, and physical. In section three, a theoretical approach to consciousness studies is suggested in light of the sense in which NCC are sufficient for consciousness. Section four addresses a concern some might have about this approach. By the end, it will become apparent that our conception of NCC has important implications for research methodology, neuroethics, and the vitality of the search for NCC. (shrink)

An experiment explored the acquisition of conscious and unconscious knowledge of semantic prosody in a second language under incidental and intentional learning conditions. Semantic prosody is the conotational coloring of the semantics of a word, largely uncaptured by dictionary definitions. Contrary to some claims in the literature, we revealed that both conscious and unconscious knowledge were involved in the acquisition of semantic prosody. Intentional learning resulted in similar unconscious but more conscious knowledge than incidental learning. The results are discussed in (...) terms of second language learning and the nature of unconscious knowledge. (shrink)

With no statutory definition of death, the accepted medical definition relies on brain stem death criteria as a definitive measure of diagnosing death. However, the use of brain stem death criteria in this way is precarious and causes widespread confusion amongst both medical and lay communities. Through critical analysis, this paper considers the insufficiencies of brain stem death. It concludes that brain stem death cannot be successfully equated with either biological death or the loss of integrated bodily function. (...) The overemphasis of the brain-stem and its consequences leaves the criteria open to significant philosophical critique. Further, in some circumstances, the use of brain stem death criteria causes substantial emotional conflict for families and relatives. Accordingly, a more holistic and comprehensive definition of death is required. (shrink)

Abstract. This introductory chapter was written in 1996, for a new book of review articles on the emerging science of consciousness, specifically aimed at undergraduate and postgraduate students by experts in the relevant fields. Following on a brief history, the chapter moves on to definitions of consciousness and background philosophical issues, and then introduces a unified, non-reductionist scientific approach. It then summarises major issues for studies of consciousness in cognitive psychology, including studies of attention, memory, the extent (...) of preconscious analysis and the relation of consciousness more generally to human information processing. It then turns to the neuropsychology of consciousness, starting with some apparent neural requirements for the transition from preconscious to conscious states, various clinical dissociations of consciousness, conditions for integration (or binding) and, finally, clinical applications, including different forms of mind/body interaction and evidence for the causal efficacy of mental states. The chapter concludes that while some of the ancient problems of consciousness remain unsolved, its study has become the subject of a rapidly developing science. (shrink)

Extended cognition theorists claim that the definition of cognition can be extended to include not only the brain, but also the body and environment. In a series of works, Mark Rowlands has envisioned a new science of mind that explores the externalism of consciousness and cognition. This paper connects Rowlands’ work with the phenomenology of Aron Gurwitsch. It shows how Gurwitsch’s field of consciousness, in particular his conception of the marginal halo, can provide a distinct, organized way (...) of thinking about extended cognition. A key question considered is from where do cognitive processes project and disclose meanings? By thinking of location as locus—a projecting pathway of points of intentional opportunity—organization in extended cognition becomes organization in a field of consciousness. The marginal halo in the field of consciousness is articulated as this locus of intentionality, what Rowlands calls “the noneliminable intentional core”. Problems of cognitive bloat and personal character are addressed in light of the findings. In addition to situating Gurwitsch’s work within the extended mind movement for the first time, this study highlights the importance of the marginal halo, largely neglected in previous Gurwitsch scholarship. (shrink)

The article is devoted to the study of the nature of consciousness within the framework of the information concept. The paper proposes a definition of consciousness as an informational environment in which an extended model of reality is realized. The process of realization of this extended model is defined as thinking. The result of thinking is information objects that form a system in the form of information environment. Information objects are reflections of the real world properties, not (...) directly, but by means of translation through a special object – a carrier of consciousness. In the case of human consciousness, such a carrier is a human being (represented in the form of his nervous system). As a result, consciousness can be qualified as a simulacrum of reality, i.e., a model of a model: an information model of the carrier of consciousness, which in turn is a means of physical modeling of the real "big" world. Possible mechanisms mediating thinking are considered. For this purpose, two new concepts are introduced: neural circuit and neurophysical pattern. An approach to the study of self-consciousness based on the localization of the consciousness carrier in the multidimensional space of states of initial real objects, as well as their reflections in the form of information objects is proposed. This localization is ensured by the presence of feedbacks. Summarizing the results of the study, the article states the following connection between consciousness, self-consciousness and subjectness: under certain conditions (when consciousness is localized in the state space of the carrier of consciousness), consciousness acquires the property of self-consciousness, a special case of which (when the initiator of changes determining localization is the carrier of consciousness) is self-consciousness endowed with subjectness. (shrink)

The official definition of ‘pain’ by the International Association for the Study of Pain (IASP) hasn’t seen much revision since its publication in 1979. There have been various criticisms of the definition in the literature from different quarters: that the definition implies a dubious metaphysical dualism, that it requires a strong form of consciousness as well as linguistic abilities, that it excludes many vulnerable groups that are otherwise perfectly capable of experiencing pain, that it has therefore (...) unacceptable practical as well as ethical consequences, that it is unhelpful to the health-care professional as an operational definition, that it is too narrow, and many others. In my view, most of these criticisms depend on misunderstandings or on uncharitable interpretations. My aim is to go over the definition, clarify some potential ambiguities, and argue that these criticisms don’t cut much ice. At the end, I will present a few slightly reworded versions of the definition that I claim are more felicitous and capture the original intended meaning by the members of the taxonomic committee in a much better and transparent way that avoids all the major extant criticisms in the literature. (Written for interdisciplinary audiences.). (shrink)

The presence or absence of consciousness is the linchpin of taxonomy for disorders of consciousness (DOCs), as well as a focal point for end-of-life decision making for patients with DOCs. Focus on consciousness in this latter context has been criticized for a number of reasons, including the uncertainty of the diagnostic criteria for consciousness, the irrelevance of some forms of consciousness for determining a patient’s interests, and the ambiguous distinction between consciousness and unconsciousness. As (...) a result, there have been recent suggestions that perhaps consciousness ought not to play the focal role that it does in decision making for persons with DOCs, and that other considerations, such as patient and family values, ought to take center stage. In this article, I take a step back and reexamine the meaning of consciousness in the DOC taxonomy. I propose that, while consciousness in DOC taxonomy is defined as “wakeful awareness,” this definition, while clinically expedient, occasions ethical misunderstanding. Using resources from non-Western philosophy of mind, I argue that the form of consciousness that is ethically relevant in DOCs is intransitive, or pure. I contrast this pure experience with transitive consciousness to highlight why ethical conclusions ought not define consciousness solely as “wakeful awareness,” even if clinical criteria do. (shrink)

Consciousness attracts the attention of researchers representing various disciplines. Hence, there is a demand for a theoretical tool that could integrate data and theoretical concepts originating from distinct fields. The paper proposes to use the framework of the theory of integrative levels. The development and the definitions of the concept of levels are briefly discussed. The final part of the paper presents a proposal for incorporating the levels of consciousness into the framework of the integrative levels theory.

Experimental Phenomena of Consciousness is the definitive collection of consciousness phenomena in which awareness emerges as an experimental variable. With its comprehensive yet succinct entries, arranged alphabetically, this dictionary will be a valuable reference tool for libraries and researchers at all levels in psychology, neuroscience, and philosophy, who are investigating consciousness, cognition, perception, and attention. It will also be an important addition to the reading lists of courses on consciousness and cognition. Most entries include illustrations and (...) a list of references where a more thorough treatment of the topic can be found. The text is supported by a web page that provides dynamic illustrations and other supplemental material. As the first reference book on the topic, Experimental Phenomena of Consciousness will be a valuable tool for undergraduates, graduate students, professional researchers, and anyone who has an interest in the subject of consciousness. (shrink)

Theoretical explication of a growing body of empirical data on consciousness-related anomalous phenomena is unlikely to be achieved in terms of known physical processes. Rather, it will first be necessary to formulate the basic role of consciousness in the definition of reality before such anomalous experience can adequately be represented. This paper takes the position that reality is constituted only in the interaction of consciousness with its environment, and therefore that any scheme of conceptual organization developed (...) to represent that reality must reflect the processes of consciousness as well as those of its environment. In this spirit, the concepts and formalisms of elementary quantum mechanics, as originally proposed to explain anomalous atomic-scale physical phenomena, are appropriated via metaphor to represent the general characteristics of consciousness interacting with any environment. More specifically, if consciousness is represented by a quantum mechanical wave function, and its environment by an appropriate potential profile, Schrödinger wave mechanics defines eigenfunctions and eigenvalues that can be associated with the cognitive and emotional experiences of that consciousness in that environment. To articulate this metaphor it is necessary to associate certain aspects of the formalism, such as the coordinate system, the quantum numbers, and even the metric itself, with various impressionistic descriptors of consciousness, such as its intensity, perspective, approach/avoidance attitude, balance between cognitive and emotional activity, and receptive/assertive disposition. With these established, a number of the generic features of quantum mechanics, such as the wave/particle duality, and the uncertainty, indistinguishability, and exclusion principles, display metaphoric relevance to familiar individual and collective experiences. Similarly, such traditional quantum theoretic exercises as the central force field and atomic structure, covalent molecular bonds, barrier penetration, and quantum statistical collective behavior become useful analogies for representation of a variety of consciousness experiences, both normal and anomalous, and for the design of experiments to study these systematically. (shrink)

Experimental Phenomena of Consciousness is the definitive collection of consciousness phenomena in which awareness emerges as an experimental variable.

The concept of person is integral to bioethical discourse because persons are the proper subject of the moral domain. Nevertheless, the concept of person has played no role in the prevailing formulation of human death because of a purported lack of consensus concerning the essential attributes of a person. Beginning with John Locke's fundamental proposition that person is a ‘forensic term’, I argue that in Western society we do have a consensus on at least one necessary condition for personhood, and (...) that is the capacity for conscious experience. When we consider the whole brain formulation of death, and the most prominent defense of it by the President's Commission for the Study of Ethical Problems in Medicine and Biomedical and Behavioral Research, we can readily identify the flaws that grow out of the failure to define human death as the permanent loss of the capacity for conscious experience. Most fundamental among these flaws is a definition of human death that reduces persons to the capacity of the brain to regulate purely physiological functioning. Such a formulation would, in theory, apply to any member of the animal kingdom. I suggest that an appropriate concept of death should capture what it is about a particular living being that is so essential to it that the permanent loss of that thing constitutes death. What is essential to being a human being is living the life of a person, which derives from the capacity for conscious experience. (shrink)

DEFINING THE LIMITS OF THE FIELD. Because 'consciousness and the body' is central to so many philosophical endeavors, I cannot provide a comprehensive survey of recent work. So we must begin by limiting the scope of our inquiry. First, we will concentrate on work done in English or translated into English, simply to ensure ease of access to the texts under examination. Second, we will concentrate on work done in the last 15 years or so, since the early 1990s. (...) Third, we will concentrate on those philosophers who treat both consciousness and the body together. Thus we will not treat philosophers who look at body representations in culture, nor philosophers who examine socio-political bodily practices with minimal or no reference to consciousness. Finally, even with the philosophers we choose to treat, we cannot be comprehensive and will instead make representative choices among their works. With that being said, we will have a fairly liberal definition of continental philosophy, operationally defined as that which makes (non-exclusive) reference to the classic phenomenology of Husserl, Heidegger, and Merleau-Ponty. Thus we will include the radical.. (shrink)

Consciousness is often defined as an experience of the world, but its definitions vary and stir up controversy. It is described through the vocabulary of philosophy, psychology, neuroscience and spirituality, to name but a few fields. Other-than-human consciousness has long been considered non-existent, a notion that has only recently changed as other-than-humans have been found to possess consciousness and a capacity for intentional behaviour (Low 2012: 2). This article presents perspectives on interspecies communication to propose that various (...) species have consciousness and that communication between human and other-than-human consciousnesses is possible. My research aims to investigate the concept of consciousness and intuitive interspecies communication by experimenting methods within artistic practice that can foster a more profound understanding of human and other-than-human relations. I use art projects as artistic case studies to substantiate my hypothesis of consciousness being an essential connection for intuitive interspecies communication. (shrink)

Course Description: This course is designed as an upper-level seminar, with heavy emphasis on reading and writing. The reading materials are all from contemporary sources. We will cover topics such as the definitions of 'consciousness,' the neurophysiological basis of consciousness, the explanation of consciousness, and the possibility of forming a unified theory of consciousness. Student participation in class discussion is greatly encouraged.

The interpretation of man which I have defended in my book, Theory of Man, agrees with the Linnaean designation of homo sapiens, which is more exact, in my opinion, than the classical one of “rational animal.” In that work I maintain that what is peculiar to man is that he is conscious of a reality outside of himself and of his own intimate being, or, in other words, that he recognizes the independent existence of the world and is an ego. (...) Both matters can be reduced to a unique primary function: the objectifying activity, which in normal, continuous, and accumulative operation belongs only to man, and from which all essentially human traits are derived. The peculiar characteristic of perception properly so called, that is, human perception, is the observation of things that are present, the recognition that a given thing exists. To perceive, then, is to attribute presence or existence to what is perceived, to admit it as an object existing by itself, certainly in different ways according to whether it is a question of external things, of the subjective entity, or of the processes and “states” inherent in it; let it be noted that when perceptive attention fastens upon the “states,” that is to say, on subjective, unintentional processes like those of coenesthesia which ordinarily are not perceived but are lived, enjoyed, or suffered, these become objectified without losing in themselves their condition of states. The capacity to objectify is the bedrock of human nature; animal conscience (if it deserves this name) must be imagined, save for rare exceptions, to be a succession of “states” to which objectifying attention is not applied because such attention can only come from an ego. (shrink)

In this paper I argue that the Integrated Information Theory of Consciousness has an underlying emergentist metaphysics, specifically of a kind that has received minimal attention and we may call functionalist emergentism. I will try to show that in this scientific theory conscious experience is a functional-role property possessed by the whole system, not by their parts, which is dependent on, but also (purportedly) causally powerful over and above, the properties of the parts. However, I will argue that depicting (...) conscious experience as a functional-role emergent property threatens the whole coherence of the theory because, by definition, functional-realizers do all the causal work associated with the instantiation of any functional-role property on any occasion. Hence, to preserve the causal power of consciousness, which, as we will see, is one of the fundamental building blocks of the theory, linked to the assertion of the very existence of consciousness, phenomenal properties should be re-thought as realizers of the relevant informationally integrated causal-roles. (shrink)

: If we were asked to draw a graph to represent the distribution of consciousness in the world around us based on objective criteria, we would definitely be in trouble. The two objective parameters that have been traditionally considered as a guide – the complexity of behavior and brain size – lead to paradoxical conclusions and turn out to be unsatisfactory, to say the least. We need to find novel, reliable metrics. However, these can be identified, validated and calibrated (...) only if we first tackle seriously the problem of recognizing consciousness in our fellow humans, a task which is far from being obvious. Keywords: Consciousness; Animal; Brain; Behaviour; Coma La distribuzione della coscienza: un difficile diagramma cartesiano Riassunto: Se ci chiedessero di tracciare un grafico per rappresentare la distribuzione della coscienza nel mondo che ci circonda su una base oggettiva, ci troveremmo sicuramente in difficoltà. I due criteri oggettivi che sono stati tradizionalmente presi in considerazione come guida – la complessità del comportamento e la dimensione del cervello – conducono a conclusioni paradossali rivelandosi, come minimo, insoddisfacenti. È necessario individuare altre misure. Ma queste potranno essere individuate, validate e calibrate soltanto se prima affronteremo seriamente il problema di riconoscere la coscienza nell’uomo, un compito tutt’altro che scontato. Parole chiave: Coscienza; Animale; Cervello; Comportamento; Coma. (shrink)

Merker's core idea, that the experience of being conscious reflects the interactions of actions, targets, and motivations in the upper brainstem, with cortex providing the content of the conscious experience, merits serious consideration. However, we have two areas of concern: first, that his definition of consciousness is so broad that it is difficult to find any organisms with a brain that could be non-conscious; second, that the focus on one cortical–subcortical system neglects other systems (e.g., basal forebrain and (...) brainstem cholinergic systems and their cortical and thalamic target areas) which may be of at least equal significance. (Published Online May 1 2007). (shrink)

Confusion concerning the scientific study of consciousness is metanalysed by considering definitions of consciousness and the diversity of beliefs about consciousness and reality particularly as they are affected by information from anomalous experiences. This archival and theoretical examination reveals that the purported subjective nature of consciousness continues to create problems for its scientific study resulting in diversity in the academic community concerning the nature of consciousness. After a brief discussion in the first section of the (...) confusion found in the literature concerning consciousness, some of the referents of the term consciousness are defined in the second section. The third section consists of a summary of die results of a study by Baruss and Moore in which the disparity of versions of consciousness is related to differences in personal beliefs and purported experiences. In particular, purported anomalous experiences such as mystical experiences or out‐of‐body experiences are correlated with rejection of a physicalist interpretation of reality and a scientific mode of inquiry. Such experiences are discussed in the fourth section. It is indicated in the fifth section that the requirement for mterchangeability of observers in science has not been respected in some previous discussions of consciousness and that continued introspection of subjective experience and personal self‐exploration may be informative for a given investigator if not for everyone in the scientific community. (shrink)

In Principia Philosophiae I 9, Descartes defines “thought” as follows: “By the name ‘thought’ I understand all that which happens in us such that we are conscious of it, insofar as there is consciousness of it in us”. I inquire how to read the "insofar as" in this definition.

This paper introduces the background to the debate addressed by the papers of this Special Issue of Pragmatics & Cognition. Starting with a definition of consciousness it traces some ways in which the term is applied; from clinical medicine, where it relates somewhat crudely to responsiveness to external stimuli, to more cognitive and philosophical aspects such as higher order consciousness and its content. It then discusses the relation of consciousness to brain anatomy, the neural correlates of (...) consciousness, and its possible evolution. In the meeting which forms the basis for Frith’s core paper, Christof Koch also made important contributions, here précised. A discussion of the origins of consciousness in relation to the top-down and bottom-up models brought to the fore follows suit. (shrink)

The term “euthanasia” is used in conflicting ways in the bioethical literature, as is the term “assisted suicide,” resulting in definitional confusion, ambiguities, and biases which are counterproductive to ethical and legal discourse. I aim to rectify this problem in two parts. Firstly, I explore a range of conflicting definitions and identify six disputed definitional factors, based on distinctions between (1) killing versus letting die, (2) fully intended versus partially intended versus merely foreseen deaths, (3) voluntary versus nonvoluntary versus involuntary (...) decisions, (4) terminally ill versus non-terminally ill patients, (5) patients who are fully conscious versus those in permanent comas or persistent vegetative states, and (6) patients who are suffering versus those who are not. Secondly, I distil these factors into six “building blocks” and combine them to develop an unambiguous, value-neutral taxonomy of “end-of-life practices.” I hope that this taxonomy provides much-needed clarification and a solid foundation for future ethical and legal discourse. (shrink)