The Anthropocene overthrows classical dichotomies like technology and nature and a new class of beings emerges: hybrids. The transitive status of hybrids - which establishes an extra, separate, 'third' ontological category, going beyond the dichotomy between nature and technology - constitutes a significant problem for environmental philosophy and philosophy of technology since they traditionally focus on either 'nature' (natural entities) or 'artefacts' (technological objects). In order to reflect on the ethical significance of hybrids, a classification of different (...) types of hybrids is required. Such a classification is provided by this article, based on insights from both environmental philosophy and philosophy of technology. After explaining why a new class of beings emerges in the Anthropocene, and reflecting on the one-sidedness of philosophy of technology and environmental philosophy in their focus on either technology or nature, we propose a new classification of hybrids in this article that provides a new starting point for reflections on the moral significance of hybrids in environmental philosophy and philosophy of technology. (shrink)

Grasping the identity of hybrids, that is beings which cross the binarism of nature and technology (e.g. genetically-modified organisms (GMOs), syn-bio inventions, biomimetic projects), is problematic since it is still guided by self-evident dualistic categories, either as artefacts or as natural entities. To move beyond the limitations of such a one-sided understanding of hybrids, we suggest turning towards the categories of affordances and the juxtaposition of needs and patterns of proper use, as inspired by the Heideggerian version of phenomenology. (...) Drawing upon selected concepts by Heidegger, we argue that hybrids can be conceptualised as a regenerative design and use to serve the planet. We argue that the ideal type of non-exploitative account of hybrids consists of the adaptive approach to the environment, which does not, however, exclude the possibility of designing and constructing new beings. We also point out that hybrids undermine the divide of being destructive/regenerative which marks the boundaries of nature and technology. (shrink)

The emerging field of synthetic biology aims to engineer novel biological entities. The envisioned future bio-based economy builds largely on “cell factories”: organisms that have been metabolically engineered to sustainably produce substances for human ends. In this paper, we argue that synthetic biology’s goal of creating efficient production vessels for industrial applications implies a set of ontological assumptions according to which living organisms are machines. Traditionally, a machine is understood as a technological, isolated and controllable production unit consisting of parts. (...) But modified organisms, or hybrids, require us to think beyond the machine paradigm and its associated dichotomies between artificial and natural, organisms and artefacts. We ask: How may we conceptualise hybrids beyond limiting ontological categories? Our main claim is that the hybrids created by synthetic biology should be considered not as machines but as metabolic systems. We shall show how the philosophical account of metabolism can inform an ontology of hybrids that moves beyond what we call the “machine ontology”, considering that metabolism enables thinking beyond the dominant dichotomies and allows us to understand and design lifeforms in a bio-based economy. Thus, the aim of this paper is twofold: first, to develop the philosophical ontology of hybrids, and second, to move synthetic biology beyond the problematically limiting view of hybrids. (shrink)

This book provides a detailed exposition of one of the most practical and popular methods of proving theorems in logic, called Natural Deduction. It is presented both historically and systematically. Also some combinations with other known proof methods are explored. The initial part of the book deals with Classical Logic, whereas the rest is concerned with systems for several forms of Modal Logics, one of the most important branches of modern logic, which has wide applicability.

Scientific models share one central characteristic with fiction: their relation to the physical world is ambiguous. It is often unclear whether an element in a model represents something in the world or presents an artifact of model building. Fiction, too, can resemble our world to varying degrees. However, we assign a different epistemic function to scientific representations. As artifacts of human activity, how are scientific representations allowing us to make inferences about real phenomena? In reply to this concern, philosophers of (...) science have started analyzing scientific representations in terms of fictionalization strategies. Many arguments center on a dyadic relation between the model and its target system, focusing on structural resemblances and “as if” scenarios. This chapter provides a different approach. It looks more closely at model building to analyze the interpretative strategies dealing with the representational limits of models. How do we interpret ambiguous elements in models? Moreover, how do we determine the validity of model-based inferences to information that is not an explicit part of a representational structure? I argue that the problem of ambiguous inference emerges from two features of representations, namely their hybridity and incompleteness. To distinguish between fictional and non-fictional elements in scientific models my suggestion is to look at the integrative strategies that link a particular model to other methods in an ongoing research context. To exemplify this idea, I examine protein modeling through X-ray crystallography as a pivotal method in biochemistry. (shrink)

From climate change to fossil fuel dependency, from the uneven effects of natural disasters to the loss of biodiversity: complex socio-environmental problems indicate the urgency for cross-disciplinary research into the ways in which the social, the natural and the technological are ever more entangled. This ground breaking text moves between environmental sociology and environmental geography, political and social ecology and critical design studies to provide a definitive mapping of the state of environmental social theory in the age of the anthropocene. (...) Environments, Natures and Social Theory provokes dialogue and confrontation between critical political economists, actor network theorists, neo-Malthusians and environmental justice advocates. It maps out the new environmental politics of hybridity moving from hybrid neo-liberals to end times ecologists, from post environmentalists to cyborg eco-socialists. White, Rudy and Gareau insist on the necessity of a critical but optimistic hybrid politics, arguing that a more just, egalitarian, democratic and sustainable anthropocene is within our grasp. This will only be brought into being, however, by reclaiming, celebrating and channeling the reconstructive potential of entangled hybrid humans as inventive hominids, creative gardeners, critical publics and political agents. Written in an accessible style, Environments, Natures and Social Theory is an essential resource for undergraduate and postgraduate students across the social sciences. (shrink)

Today, new artistic practices incorporate scientific techniques linked to medical research that modify the body’s biological performance in vivo, transforming it into a singular laboratory object. In this way, some artists are making works of their bodies by subjecting them to various biotechnological procedures, often invasive. Augmented, the biological body of these performance artists becomes a site for experimentation. DIY (Do It Yourself) enthusiasts or accompanied by biologists and doctors, are these ‘bio-artists’ evidence of the changes brought about by a (...) new mechanisation of the human body, the complexity of which we are only just beginning to understand? Could there be, in the name of art, reasons that justify the creation of utopian bodies that are not eschatological, and that could make us believe in the worst or the best of all worlds? Based on performances by Stelarc, Yann Marussich, Marion Laval-Jeantet and the Quimera Rosa duo, our aim is to analyse what is at stake in this new fabrication of the body outside its biological limits. (shrink)

This is a companion paper to Braüner where a natural deduction system for propositional hybrid logic is given. In the present paper we generalize the system to the first-order case. Our natural deduction system for first-order hybrid logic can be extended with additional inference rules corresponding to conditions on the accessibility relations and the quantifier domains expressed by so-called geometric theories. We prove soundness and completeness and we prove a normalisation theorem. Moreover, we give an axiom system first-order hybrid logic.

This paper critically examines the forays into metaphysics of The Dual Nature of Technical Artifacts Program (henceforth, DNP). I argue that the work of DNP is a valuable contribution to the epistemology of certain aspects of artifact design and use, but that it fails to advance a persuasive metaphysic. A central problem is that DNP approaches ontology from within a functionalist framework that is mainly concerned with ascriptions and justified beliefs. Thus, the materiality of artifacts emerges only as the (...) external conditions of realizability of function ascription. The work of DNP has a strong programmatic aspect and much of its foray into metaphysics is tentative, so the intent of my argument is partly synthetic: to sum up these issues as they are presented in the literature and highlight some recognized problems. But I also go beyond that, suggesting that these problems are foundational, arising from the very way in which DNP poses the question of artifact metaphysics. Although it sets out to incorporate objective aspects of technology, DNP places a strong focus on the intentional side of the purported matter-mind duality, bracketing off materiality in an irretrievable manner. Thus, some of the advantages of dualism are lost. I claim that DNP is dualistic, not merely based on “duality”, but that its version of dualism does not appropriately account for the material “nature” of artifacts. The paper ends by suggesting some correctives and alternatives to Dual Nature theory. (shrink)

In hybrid nature that results from a random mix of technological infrastructures and natural ecosystems, environmental fundamentals are modified producing dramatic effects on the semiosis of several species. Human intrusion in ecosystems creates new spatial configurations that have a reduced ecological complexity when compared with systems less affected by human manipulation. This causes cascading effects on other environmental fundamentals. F.i., systems that face a low complexity, are more exposed to changes that in turn can reduce the performances of individual (...) species due to a higher level of uncertainty. The flux of information could be apparently maintained in hybrid nature when some natural patterns and processes are replaced by human artifacts and associated dynamics, but the process of signification could be strongly modified. The strict contact between people and wild organisms in hybrid nature requires new types of strategies to guarantee the continuation of the natural dynamic of populations and communities. Rural sanctuaries are proposed as one of the possible models on which to invest in order to harmonize the technological and natural processes with the goal to assure a multiscale sustainability. (shrink)

Toward a Metaphysics of Culture provides an initial, minimal, and original analysis of the concept of uniquely enlanguaged cultures of the human world and of the distinctive metaphysical features of whatever belongs to the things of that world: preeminently, persons, language, actions, artworks, products, history, practices, institutions, and norms. Emphasis is placed on the artifactual and hybrid nature of persons, naturalistic and post-Darwinian evolutionary considerations, and the bearing of the account on a range of disputed inquiries largely centered on (...) the relationship between physical nature and human culture and between the natural and human sciences. The schema offered lays a foundation for a closer analysis of the human mind, cognition, interpretation, nomologicality, normativity, intentionality, realism, and related matters. The central thesis advances the heterodox notion, congruent with post-Darwinian studies in paleoanthropology, that the human person is a natural artifact, a functional transform of the primate members of Homo sapiens, by way of a complexly intertwined biological and encultured evolution, primarily dependent on the invention, transmission, and mastery of true language and the novel hybrid abilities that that makes possible. The emergence of persons is taken to be the obverse side of the mastery of language itself. (shrink)

This paper systematically compares two frameworks for analysing technical artefacts: the Dual-Nature approach, exemplified by the contributions to Kroes and Meijers , and the collectivist approach advocated by Schyfter , following Kusch . After describing the main tenets of both approaches, we show that there is significant overlap between them: both frameworks analyse the most typical cases of artefact use, albeit in different terms, but to largely the same extent. Then, we describe several kinds of cases for which (...) the frameworks yield different analyses. For these cases, which include one-of-a-kind artefacts and defect types, the Dual-Nature framework leads to a more attractive analysis. Our comparison also gives us the opportunity to respond to Vaesen’s critical paper. We do so by distinguishing two readings of the Dual-Nature framework and pointing out that on the sustainable, weaker reading, Vaesen’s considerations supplement the framework rather than offering an alternative to it.Keywords: Technical artefact; Dual Nature framework; Collectivist framework; Artefact use. (shrink)

How do promissory obligations get created? Some have thought that the answer to this question must make reference to our social practice of promising. Recently, however, T.M. Scanlon has argued (in his book What We Owe to Each Other) for a pure ‘expectation view’ of promising, according to which promissory obligations arise as a result of our producing certain expectations in others. He formulates a principle of fidelity (Principle F) that tells us when one has gained an obligation due to (...) producing expectations in another, and he maintains that breaking one's promise is merely a special instance of violation against Principle F. Though initially compelling, Scanlon’s account is ultimately unsatisfactory because it is subject to a vicious circularity. In order to get out of the circle, we are forced to resort back to elements of a social practice view of promising. Thus we arrive at a hybrid view of promissory obligation, which weds parts of Scanlon’s expectation view with parts of a social practice view. After briefly examining and rejecting Scanlon’s pure expectation view, I consider the hybrid view of Niko Kolodny and R. Jay Wallace. I present a serious objection to the hybrid view as they formulate it and go on to construct a modified hybrid view. Finally, I defend my modified hybrid view from certain pressing objections. (shrink)

This article studies natural food packaging as enabling artifacts of the traditional material culture of Antioquia in Colombia. For this purpose, we consider artifacts as objective nodes that combine design and use intentions, functions, materials, histories, artifactual lineages, and cooperative relationships that stabilize ritualized practices of a human group. We take the example of natural packaging as artifacts that enablers and stabilizers of traditional cooking and food preparation practices. Natural packaging materials are here assumed to be leaves having some favorable (...) property to contain a food product. After providing a theoretical reflection, we analyze the data collected from fieldwork we conducted in two towns in Antioquia, Colombia (Santa Fe de Antioquia and Amagá), as well as from an interview with an expert in the field. Finally, we show that it is possible to postulate an analysis under a relational ontological description of a traditional practice with conceptual categories of the philosophy of technology. (shrink)

Recent work in metaphysics has focused on the nature of artefacts, most accounts of which assume that artefacts depend on the intentions of their individual makers. Artefacts are thus importantly different from institutional kinds, which involve collective intentions. However, recent work in social ontology has yielded renewed focus on the social dimensions of various kinds, including artefacts. As a result, some philosophers have suggested that artefacts have a distinctly social dimension that goes beyond their makers' individual intentions but which (...) stops short of the collective intentionality of institutional kinds. I aim to combine these insights into an account of artefacts that involves disjunctive conditions of mind-dependence: Artefacts can either depend on the singular intentions of their makers or they can depend on the collective acceptance of particular social groups. Whether the first or second disjunct is satisfied depends on the artefact's context of creation. I'll argue that this applies not to artefact kinds but to individual artefacts. I then consider two objections to my view based on Robinson Crusoe cases and show how my account allows us to fit artefacts into a taxonomy of social kinds. (shrink)

This article presents a Hybrid Artificial Bee Colony for uncapacitated examination timetabling. The ABC algorithm is a recent metaheuristic population-based algorithm that belongs to the Swarm Intelligence technique. Examination timetabling is a hard combinatorial optimization problem of assigning examinations to timeslots based on the given hard and soft constraints. The proposed hybridization comes in two phases: the first phase hybridized a simple local search technique as a local refinement process within the employed bee operator of the original ABC, while (...) the second phase involves the replacement of the scout bee operator with the random consideration concept of harmony search algorithm. The former is to empower the exploitation capability of ABC, whereas the latter is used to control the diversity of the solution search space. The HABC is evaluated using a benchmark dataset defined by Carter, including 12 problem instances. The results show that the HABC is better than exiting ABC techniques and competes well with other techniques from the literature. (shrink)

In this paper two different natural deduction systems forhybrid logic are compared and contrasted.One of the systems was originally given by the author of the presentpaper whereasthe other system under consideration is a modifiedversion of a natural deductionsystem given by Jerry Seligman.We give translations in both directions between the systems,and moreover, we devise a set of reduction rules forthe latter system bytranslation of already known reduction rules for the former system.

This essay discusses how medieval authors from the thirteenth and fourteenth centuries dealt with a philosophical problem that social institutions pose for the Aristotelian dichotomy between natural and artificial entities. It is argued that marriage, political community, and language provided a particular challenge for the conception that things which are designed by human beings are artefacts. Medieval philosophers based their arguments for the naturalness of social institutions on the anthropological view that human beings are political animals by nature, but (...) this strategy required rethinking the borderline between nature and art. The limits of nature were extended, as social institutions were considered to be natural even though they are in many ways similar to artificial products. (shrink)

Die Rechtstheorie von Thomas von Aquin ist vermutlich die einflussreichste Darstellung der Naturrechtstheorie in der Rechtsphilosophie. Die zeitgenössische Literatur zur Naturrechtslehre zeigt jedoch, dass es nicht nur eine Art von Naturrechtstheorie gibt. Philosophen wie Mark C. Murphy haben hilfreiche Unterscheidungen zwischen verschiedenen Versionen der Naturrechtstheorie getroffen, indem sie versuchten, eine gemeinsame naturrechtliche Position zu identifizieren. Ziel dieses Artikels ist es, die folgende Frage zu beantworten: Welche Version der Naturrechtstheorie repräsentiert die Rechtstheorie des Thomas von Aquin am besten, da es verschiedene (...) Arten von Naturrechtstheorien gibt? Zunächst analysiere ich kritisch einige herausragende Versionen der Naturrechtstheorie. Diese Analyse bietet einen theoretischen Rahmen, um zu bestimmen, welche Art von Naturrechtstheorie Thomas von Aquin vertritt. Ich argumentiere, dass Thomas von Aquins Darstellung der Tyrannei in De Regimine Principum zeigt, dass er eine hybride Version der Naturrechtstheorie vertritt. Nach seiner Naturrechtstheorie gibt es eine moralische Mindestanforderung, die Regeln erfüllen müssen, um rechtsgültig zu sein; sobald dieses Minimum erreicht ist, ist jede Steigerung ihrer Moral auch eine Steigerung ihrer Legalität. Ich behaupte auch, dass die Naturrechtstheorie des Thomas von Aquin trotz ihrer Subtilität eine Schwäche aufweist, nämlich dass sie schwer mit dem gewöhnlichen Rechtsleben vereinbar ist. Die Ansicht, dass ein Gesetz „mehr oder weniger“ Gesetz sein könnte, und die Überzeugung, dass es für die Rechtsgültigkeit notwendige moralische Anforderungen gibt, sind nicht ausreichend durch die tatsächliche Rechtserfahrung begründet. (shrink)

“Form follows function,” the slogan of modernist architecture, could well be a slogan of artefacts generally. Since the choice of material for a tool is guided by the function of the tool, we may be tempted to think that having a functional nature distinguishes artefacts from natural objects. But that would be a mistake. Certain natural objects—especially biological entities like mammalian hearts—have functional natures too.

From a subjective point of view, we take the existence of integrated entities, i.e., ourselves as the most unproblematic given, and blithely project such integrity onto untold many “entities” far and wide. However, from a naturalistic perspective, accounting for anything more integral than the attachments and attractions that are explicable in terms of the four fundamental forces of physics has been anything but straightforward. If we take it that the universe begins as an integral unity and explodes into progressive stages (...) of internal detachment, then we can also fathom the idea that eddies of relative detachment becoming increasingly integral. Helmuth Plessner made a powerful case for the onset of “positionality” constituting one of the major transitions in nature. Surely, the emergence of “entities” that position themselves in relation to their surround marks a decisive transition in relative levels of detachment and some would say “autonomy.” It would follow, with no less force, that where and when entities can be seen to be normatively integrated, and indeed to be the agents of their own normativity, that another threshold of detachment has been crossed. The paper introduces and explores the idea that normativity, embedded in a wide-ranging theory of natural detachment, can be considered an emergent force of nature that is requisite to accounting for levels of integration beyond that which is explicable in terms of the four fundamental forces of physics. Following this line of enquiry, we argue that the first expression of a fully, normatively-integrated life-form is neither a spoken language user nor for that matter an individual but rather the neoteny-based, Homo erectus Group. In so doing we claim to have made an inroad into embedding the force of normativity into a wide-ranging naturalist framework, to have provided philosophical anthropology with a new point of departure, and at least playfully, to have given some naturalistic grist to Hegel’s proclamation that spirit is the truth of nature. (shrink)

We have been accustomed at least since Kant and mainstream history of philosophy to distinguish between the ‘mechanical’ and the ‘teleological’; between a fully mechanistic, quantitative science of Nature exemplified by Newton and a teleological, qualitative approach to living beings ultimately expressed in the concept of ‘organism’ – a purposive entity, or at least an entity possessed of functions. The beauty of this distinction is that it seems to make intuitive sense and to map onto historical and conceptual constellations (...) in medicine, physiology and the related natural -philosophical discussions on the status of the body versus that of the machine. In this presentation I argue that the distinction between mechanism and teleology is imprecise and flawed, on the basis of a series of examples: the presence of ‘functional’ or ‘purposive’ features even in Cartesian physiology; work such as that of Richard Lower’s on animal respiration; the fact that the model of the ‘body-machine’ is not at all a mechanistic reduction of organismic properties to basic physical properties but on the contrary a way of emphasizing the uniqueness of organic life; and the concept of ‘animal economy’ in vitalist medical theory, which I present as a kind of ‘teleo-mechanistic’ concept of organism – neither mechanical nor teleological. (shrink)

I consider two views that combine different elements of general theistic replies to natural evil, those of Peter van Inwagen and William Hasker. I end with a Hasker-style defense – one that, unlike Hasker's, denies the existence of pointless natural evils – and some brief observations on the direction of future debate.

Over the past decades, self-assembly has attracted a lot of research attention and transformed the relations between chemistry, materials science and biology. The paper explores the impact of the current interest in self-assembly techniques on the traditional debate over the nature of life. The first section describes three different research programs of self-assembly in nanotechnology in order to characterize their metaphysical implications: (1) Hybridization (using the building blocks of living systems for making devices and machines) ; (2) Biomimetics (...) (making artifacts mimicking nature); (3) Integration (a composite of the two previous strategies). The second section focused on the elusive boundary between self-assembly and self-organization tries to map out the various positions adopted by the promoters of self-assembly on the issue of vitalism. (shrink)

In a recent paper, Tuomas Tahko has argued for a hybrid view of the laws of nature, according to which some physical laws are metaphysically necessary, while others are metaphysically contingent. In this paper, we show that his criterion for distinguishing between these two kinds of laws — which crucially relies on the essences of natural kinds — is on its own unsatisfactory. We then propose an alternative way of drawing the metaphysically necessary/contingent distinction for laws of physics based (...) on the central kinematical/dynamical distinction used in physical theorising, and argue that the criterion can be used to amend Tahko’s own account, but also that it can be combined with different metaphysical views about the source of necessity. (shrink)

In this paper we present an action-theoretic account of artefact using and designing and describe our ICE-theory of function ascriptions to technical artefacts. By means of this account and theory we analyse the thesis of the dual nature of technical artefacts according to which descriptions of technical artefacts draw on structural and intentional conceptualisations. We show that the ascription of technical functions to technical artefacts can connect the intentional and structural parts of descriptions of artefacts, but also separate (...) these parts. Our conclusion is that the concept of technical functions forms a ‘conceptual drawbridge’ between the intentional and structural natures of technical artefacts.Keywords: Intentional and structural descriptions; Technical artefacts; Function theory; Action theory; Use; Design. (shrink)

Hybrid logics are a principled generalization of both modal logics and description logics, a standard formalism for knowledge representation. In this paper we give the first constructive version of hybrid logic, thereby showing that it is possible to hybridize constructive modal logics. Alternative systems are discussed, but we fix on a reasonable and well-motivated version of intuitionistic hybrid logic and prove essential proof-theoretical results for a natural deduction formulation of it. Our natural deduction system is also extended with additional inference (...) rules corresponding to conditions on the accessibility relations expressed by so-called geometric theories. Thus, we give natural deduction systems in a uniform way for a wide class of constructive hybrid logics. This shows that constructive hybrid logics are a viable enterprise and opens up the way for future applications. (shrink)

ABSTRACT When does a state of affairs constitute a harm to someone? Comparative accounts say that being worse off constitutes harm. The temporal version of the comparative account is seldom taken seriously, due to apparently fatal counterexamples. I defend the temporal version against these counterexamples, and show that it is in fact more plausible than the prominent counterfactual version of the account. Non-comparative accounts say that being badly off constitutes harm. However, neither the temporal comparative account nor the non-comparative account (...) can correctly classify all harms. I argue that we should combine them into a hybrid account of harm. The hybrid account is extensionally adequate and presents a unified view on the nature of harm. (shrink)

In 2006, in a special issue of this journal, several authors explored what they called the dual nature of artefacts. The core idea is simple, but attractive: to make sense of an artefact, one needs to consider both its physical nature—its being a material object—and its intentional nature—its being an entity designed to further human ends and needs. The authors construe the intentional component quite narrowly, though: it just refers to the artefact’s function, its being (...) a means to realize a certain practical end. Although such strong focus on functions is quite natural , I argue in this paper that an artefact’s intentional nature is not exhausted by functional considerations. Many non-functional properties of artefacts—such as their marketability and ease of manufacture—testify to the intentions of their users/designers; and I show that if these sorts of considerations are included, one gets much more satisfactory explanations of artefacts, their design, and normativity.Keywords: Artefacts; Dual Nature program; Function; Intentionality; Normativity. (shrink)

The transgressive ontological character of hybrids—entities crossing the ontological binarism of naturalness and artificiality, e.g., biomimetic projects—calls for pondering the question of their ethical status, since metaphysical and moral ideas are often inextricably linked. The example of it is the concept of “moral considerability” and related to it the idea of “intrinsic value” understood as a non-instrumentality of a being. Such an approach excludes hybrids from moral considerations due to their instrumental character. In the paper, we revisit the boundaries of (...) moral considerability by reexamining the legitimacy of identifying intrinsic value with a non-instrumental one. We offer the concept of “functional value,” which we define as a simultaneous contribution to the common good of the ecosystem and the possibility to disclose the full variety of aspects of a being’s identity. We argue that such a value of hybrids allows us to include them into the scope of moral considerability. (shrink)

The transgressive ontological character of hybrids—entities crossing the ontological binarism of naturalness and artificiality, e.g., biomimetic projects—calls for pondering the question of their ethical status, since metaphysical and moral ideas are often inextricably linked. The example of it is the concept of “moral considerability” and related to it the idea of “intrinsic value” understood as a non-instrumentality of a being. Such an approach excludes hybrids from moral considerations due to their instrumental character. In the paper, we revisit the boundaries of (...) moral considerability by reexamining the legitimacy of identifying intrinsic value with a non-instrumental one. We offer the concept of “functional value,” which we define as a simultaneous contribution to the common good of the ecosystem and the possibility to disclose the full variety of aspects of a being’s identity. We argue that such a value of hybrids allows us to include them into the scope of moral considerability. (shrink)

Hybrid languages are expansions of propositional modal languages which can refer to worlds. The use of strong hybrid languages dates back to at least [Pri67], but recent work has focussed on a more constrained system called $\mathscr{H}$. We show in detail that $\mathscr{H}$ is modally natural. We begin by studying its expressivity, and provide model theoretic characterizations and a syntactic characterization. The key result to emerge is that $\mathscr{H}$ corresponds to the fragment of first-order logic which is invariant for generated (...) submodels. We then show that $\mathscr{H}$ enjoys interpolation, provide counterexamples for its finite variable fragments, and show that weak interpolation holds for the sublanguage $\mathscr{H}$. Finally, we provide complexity results for $\mathscr{H}$ and other fragments and variants, and sharpen known undecidability results for $\mathscr{H}$. (shrink)

In a very general sense, hybrid can be understood to be any organism that is the product of two (or more) organisms where each parent belongs to a different kind. For example; the offspring from two or more parent organisms, each belonging to a separate species (or genera), is called a “hybrid”. “Hybridity” refers to the phenomenal character of being a hybrid. And “hybridization ” refers to both natural and artificial processes of generating hybrids. These processes include mechanisms of (...) selective cross-breeding and cross-fertilization of parents of different species for the purpose of producing hybrid offspring. In addition to these processes, “hybridization ” also refers to natural and artificial processes of whole genome duplication that result in the doubling or trebling of the sets of chromosomes of the organism. This entry provides an overview of the impact of hybridity on agriculture. It begins with an historical sketch that traces the early horticulturalists’ and naturalists’ investigations of hybrids. This starts with the observations of Thomas Fairchild and Georges-Louis Leclerc, Comte de Buffon; and leads to the explanation of its mechanism by Gregor Mendel, James Watson and Francis Crick, and Ernst Mayr; and the eventual manipulation of hybrids and hybridization by Barbara McClintock. Following this, the reader is introduced to a number of key terms and concepts in use within current research as well as highlighting diverse ethical concerns that center on hybridization. Recent research that attempts to ascertain the role of hybridization in adaptive change will be introduced. This will include research on the evolution of crop species, increased biodiversity, and the use of hybrids to manipulate phenotypically desirable traits in agricultural crops. The focus of the discussion is on a particularly significant type of naturally occurring hybridization, polyploidy hybridization. Polyploids are organisms which have more than two complete genomes in each cell. This kind of hybridization is ubiquitous among crop plants. The role of polyploidy in plant evolution and the affects of polyploidy on plants and animals will be reviewed. A critical discussion of its agricultural value in the production of fertile polyploid hybrids highlights key epistemological, ontological, and ethical issues. These are illuminated with reference to the distinct processes of artificial and natural hybridization. A survey of these different kinds of hybridization includes the ethical and economic impacts of hybridity on global nutrition, the environment, and considerations of some practical implications for the agricultural industry. Tracking the role of hybrids, the process of hybridization, and the current impacts of it for agriculture requires knowledge of the history of its early conceptualization, understanding, and use. This is the topic of the following section. (shrink)