This volume collects previously unpublished contributions to the philosophy of science. What brings them together is a twofold goal: first and foremost, celebrating the name of Roberto Torretti, whose works in this and other areas have had –and continue to have– a significant impact on the international philosophy of science community; and second, the desire of advancing novel perspectives on various issues in the philosophy of science broadly construed. Roberto Torretti has made substantial contributions to current debates in the history (...) and philosophy of science, the general philosophy of science, and the philosophy of physics and geometry. Among his landmark contributions, we find his investigations in the history and philosophy of geometry, as well as his systematic studies of Einstein's relativity theory. This volume convenes leading philosophers and early-career scholars compiling a fine collection of chapters addressing recent debates on Kantian philosophy of science, the general philosophy of science, and the history and philosophy of physics and mathematics. (shrink)

I examine the current state of the debate on the metaphysics of science. In 1, I identify some of the main questions belonging to the MS, looking into the relationship between science and metaphysics. In 2, I expound the rise of the old wave in the MS, which endorses the belief that metaphysics is a guide to, or a heuristic for, science and outlines the stronger idea that metaphysics makes science possible. In 3, I examine the maximalist MS. This is (...) a contemporary revival of the old wave, reformulating the claim that metaphysics makes science possible. In 4, I look into the new wave in the MS, which argues that science is a guide to metaphysics and, more radically, that metaphysics is to be motivated by, and restricted to, science. In 5, I briefly introduce my own minimalist MS, which contends that science sets the epistemic, methodological and ontological criteria which should work as desiderata of the MS. I close this chapter in 6 with some concluding remarks. (shrink)

This article elaborates local selective realism in view of the shifting from classical to quantum electrodynamics. After some introductory remarks, we critically address what we call global selective realism, hence setting forth the background for outlining local selective realism. When examining the transition from classical to quantum electrodynamics, we evaluate both continuities and discontinuities in observational features, mathematical structures, and ontological presuppositions. Our argument leads us to criticise the narrow understanding of limiting-case strategies, and to reject the claim that we (...) need a fully coherent theoretical framework to account for the transition from one theory to its successor in the case of electrodynamics. We close with a few remarks on the scope of local selective realism. (shrink)

We advance a framework for an inferential conception of physical laws, addressing the problem of the application of mathematical structures to the relevant structure of physical domains. Physical laws, we argue, express generalizations that work as rules for deriving physically informative inferences about their target systems, hence guiding us in our interaction with various domains. Our analysis of the application of mathematics to the articulation of physical laws follows a threefold scheme. First, we examine the immersion of the relevant structure (...) of physical domains into mathematical structures. Second, we assess the inferential power of laws resulting from the mathematical formalism employed in the immersion step. And third, we provide a suitable physical interpretation for the extant mathematical structures obtained from the inferential step. We demonstrate that a deflationary, empiricist framework for an inferential conception of physical laws delivers both an understanding of the mathematical character of physical laws, and a way of responding to some of the standard philosophical riddles associated with laws. (shrink)

This article elaborates the epistemic indispensability argument, which fully embraces the epistemic contribution of mathematics to science, but rejects the contention that such a contribution is a reason for granting reality to mathematicalia. Section 1 introduces the distinction between ontological and epistemic readings of the indispensability argument. Section 2 outlines some of the main flaws of the first premise of the ontological reading. Section 3 advances the epistemic indispensability argument in view of both applied and pure mathematics. And Sect. 4 (...) makes a case for the epistemic approach, which firstly calls into question the appeal to inference to the best explanation in the defense of the indispensability claim; secondly, distinguishes between mathematical and physical posits; and thirdly, argues that even though some may think that inference to the best explanation works in the postulation of physical posits, no similar considerations are available for postulating mathematicalia. (shrink)

ABSTRACT This article addresses the prospects of applied naturalistic metaphysics from both a global and a local perspective. Adopting a broad Sellarsian approach, I look into whether metaphysics has a place and role in the overall scientific image and assess whether it has its own subject matter as a first- or second- order discipline. After outlining the general argument in section 1, section 2 examines our construal of science and metaphysics, drawing some considerations for restating the question about the viability (...) of naturalistic metaphysics. Sections 3 and 4, in turn, suggest two styles of naturalistic metaphysics that can be respectively applied on a global and on a local basis. I briefly outline their respective goals, problems and categories. I argue, in particular, that globally applied naturalistic metaphysics deals with issues about the fundamental structure of reality, whereas locally applied naturalistic metaphysics tackles riddles arising from the examination of specific unobservable posits in the frontiers of scientific ontology. Section 5 closes with concluding remarks that put metaphysics within the scientific image. (shrink)

Elaboramos una versión del disposicionalismo experimental que esclarece la relación entre capacidades y leyes fenomenológicas. Tras algunas consideraciones introductorias, presentamos el disposicionalismo experimental en vistas de las nociones de modalidad física y ambiente de estímulo. Trazamos las líneas generales para una epistemología experimentalista de las capacidades y esclarecemos la modalidad física e invariancia de las leyes fenomenológicas. Luego examinamos las generalizaciones físicas y extrapolaciones de las leyes fenomenológicas y exponemos el caso de la ley de Fresnel, que ilustra aspectos de (...) nuestro argumento. Concluimos con algunas consideraciones sobre los límites del disposicionalismo experimental. (shrink)

We routinely speak of Newton’s laws in classical mechanics without really knowing how Newton understood such laws. This article clarifies some of the ontological, epistemological, and theological presuppositions underpinning his conception of the laws of nature. After introducing the Cartesian background (2), we examine the Newtonian view of laws of nature in three respects, namely: the character of laws of nature in the context of the rules for natural philosophy (3); the emanative conception of space and time in _De Gravitatione_; (...) (4); and the interpretation of laws of nature in terms of Leibnizian mechanisms or Berkeleyan principles (5). Our analysis highlights crucial philosophical elements of Newton’s view of laws of nature, which contributed to shape the directions that predominated in successive investigations (6). (shrink)

Nomological Humeanism has developed into a research program encompassing several variations on a single theme, namely, the view that laws are statements about regularities that we find in nature. After briefly revisiting an early form of nomological Humeanism in Hume’s critique of the idea of necessary connection, this article critically examines Lewis’ two-fold approach based on Humean supervenience and the best system account. We shall point out three limits of nomological Humeanism, which are widely recognized in the literature: its inadequacy (...) in view of physical theories, its explanatory circularity, and its purported anthropomorphism, all of which advocates of nomological Humeanism have attempted to overcome Humeanism. Lastly, we will argue that nomological Humeanism fails to provide a suitable notion of modality for laws of nature. This latter issue continues to represent a live challenge for empiricism in the philosophy of physical laws. (shrink)

This volume collects previously unpublished contributions to the philosophy of science. What brings them together is a twofold goal: first and foremost, celebrating the name of Roberto Torretti, whose works in this and other areas have had – and continue to have – a significant impact on the international philosophy of science community; and second, the desire of advancing novel perspectives on various issues in the philosophy of science broadly construed. In what follows, I firstly offer a brief biographical note (...) on Roberto Torretti; second, I suggest considering Torretti’s philosophical production as belonging to the tradition of natural philosophy; and third, I provide an outline of what is to come in the rest of the book. (shrink)

Debates on the metaphysics of science have steadily gained momentum over the last decade or so. This appears to illustrate a case of philosophers’ realisation that metaphysics—and theoretical philosophy overall—largely depends upon the sciences and has a good deal to learn from them. Recent literature on this, in fact, has reached an unforeseen high level of refinement in the arguments and a very much desirable precision in the consequences that we can derive from examining the interplay currently undergoing between science (...) and metaphysics. The editors of the volume under review have certainly done a great work by compiling some fruitful and novel contributions to our understanding of issues such as the aim and scope of the metaphysics of science, laws of nature, causation, and natural kinds, which are amongst the most heatedly discussed topics in the arena.The structure of the volume is as follows: “What is the metaphysics of science?” ; “Measurements, la .. (shrink)

Nomological dispositionalism has occupied a center stage in contemporary metaphysics about laws, holding the view that laws of nature derive from an ontology of intrinsically modal dispositional properties. This view faces, though, various challenges, some of which are worth revisiting. Among them, dispositionalism about properties condemns laws to ontological redundancy; its reconstruction of properties does not seem to fit with experimentalism; it introduces a view of metaphysical modality that ambiguously moves between (_de dicto_) logical modality and (_de re_) physical modality; (...) and it assumes fundamentalist meta-metaphysical presuppositions. Rather than dismantling nomological dispositionalism –quite the contrary, we believe it is a valuable theory–, we aim at identifying those nodes where alternative strategies could be followed in a theory of laws. (shrink)

In this chapter, we provide an analysis of Torretti’s main views in the general philosophy of science. I shall examine his Kantian take on objectivity (Sect. 2.2), the creative understanding thesis (Sect. 2.3), his critique of scientific realism (Sect. 2.4), his elaboration of mathematical fictionalism (Sect. 2.5), his analysis of physical laws (Sect. 2.6), and his examination of the contribution of philosophical reflection to scientific progress (Sect. 2.7). For this, I will consider Torretti’s publications from the late 1960s to the (...) early 2010s in the hope of expounding some of his ideas that may not be well known to some of his readers coming exclusively from either the history and philosophy of physics and geometry, or from the history of philosophy. With this, we fill a gap in our understanding of Torretti’s views in various fields in the philosophy of science, assessing their motivations and arguing that they yield an attractive alternative for various issues in current debates. (shrink)

RESUMEN La sección 1 introduce lo que llamo la tesis del colapso de las estructuras matemáticas y las estructuras físicas. La sección 2 examina si acaso la indispensabilidad de las matemáticas para la física fundamental involucra la adopción del platonismo matemático, en este caso acerca de estructuras matemáticas, como argumenta el realismo estructural óntico. La sección 3 muestra que la adopción de la tesis del colapso arriesga introducir la hipótesis del universo matemático. Desde la perspectiva de la concepción inferencial en (...) filosofía de las matemáticas aplicadas, la sección 4 examina aspectos epistémicos del rol de las matemáticas en la teorización científica, derivando distinciones entre estructuras matemáticas y estructuras físicas. El argumento concluye en la sección 5 indicando algunos límites para la presente estrategia. ABSTRACT Section 1 introduces what I call the collapse thesis, which holds that the boundaries of mathematical and physical structures blur or even vanish in certain areas of fundamental physics. Section 2 examines the claim that the indispensability of mathematics to fundamental physics requires the adoption of mathematical Platonism, this time concerning the reality of mathematical structures, as ontic structural realism contends. Section 3 demonstrates that the collapse thesis introduces the threat of the mathematical universe hypothesis. Then, from the perspective of the inferential conception in the philosophy of applied mathematics, section 4 examines epistemic features of the role of mathematics in scientific theorizing, drawing distinctions between mathematical and physical structures. Lastly, the argument closes in section 5 pointing out some of the limits of the proposed strategy for a distinction. (shrink)

Expondré las líneas generales de una teoría de la verdad evolucionaria con tres objetivos principales: primero, mostrar que ella da cuenta de la teoría de la verdad pragmatista de Peirce, reuniendo la convergencia y la correspondencia; segundo, evidenciar que involucra compromisos metafísicos realistas a partir de la relación entre evolución, verdad y realidad; y, tercero, arrojar luz sobre un aspecto importante de la discusión contemporánea sobre teorías de la verdad, a saber, su carácter eminentemente metafísico. I shall expound the general (...) lines of an evolutionary theory of truth with three main purposes: first, to show that it offers an account of Peirce's pragmatist theory of truth, taking together convergence and correspondence; second, to evidence that it involves realist metaphysical commitments in the relation between evolution, truth, and reality; and, third, to throw light on an important aspect of the contemporary discussion about theories of truth, namely, its eminently metaphysical character. (shrink)

En este artículo se plantean las siguientes preguntas: primero, ¿es Peirce un realista científico? Segundo, ¿han sido relevantes las ideas de Peirce para la defensa contemporánea del realismo científico? Y tercero, ¿está el realismo científico peirceano comprometido con una metafísica de la ciencia? La respuesta a tales preguntas es positiva. En el argumento se apela tanto a consideraciones de los manuscritos de Peirce como al debate contemporáneo sobre realismo científico. Luego de algunas observaciones introductorias en la primera sección, se expone (...) brevemente en la segunda sección el realismo científico en la versión de Psillos. En la siguiente sección se argumenta que la noción de abducción peirceana ha resultado crucial en la defensa contemporánea del realismo científico. En la cuarta se exponen algunos lineamientos de la metafísica de la ciencia del realismo científico peirceano, a saber, de creencia natural y ley de la naturaleza. En la quinta sección son resumidas las razones principales expuestas en este artículo para sostener que Peirce es un realista científico cuyas ideas han resultado de vital importancia en el debate actual. (shrink)

We argue that the distinction between framework and interaction theories should be taken carefully into consideration when dealing with the philosophical implications of fundamental theories in physics. In particular, conclusions concerning the nature of reality can only be consistently derived from assessing the ontological and epistemic purport of both types of theories. We put forward an epistemic form of realism regarding framework theories, such as Quantum Field Theory. The latter, indeed, informs us about the general properties of quantum fields, laying (...) the groundwork for interaction theories. Yet, concerning interaction theories, we recommend a robust form of ontological realism regarding the entities whose existence is assumed by these theories. As an application, we refer to the case of the Standard Model, so long as it has proved to successfully inform us about the nature of various sorts of fundamental particles making up reality. In short, although we acknowledge that both framework and interaction theories partake in shaping our science-based view of reality, and that neither would do by itself the work we expect them to accomplish together, our proposal for a coherent ontology of fundamental entities advances a compromise between two forms of realism about theories in each case. (shrink)

Sergio Rojas ha hecho una importante contribución al desarrollo de los estudios kantianos en el mundo de habla hispana con su libro El problema de la historia en la filosofía crítica de Kant, puesto que, al menos por el propósito que lo inspira, es seguro que su trabajo motivará a otros estudiosos a abrir el horizonte de reflexión más allá de las tres Críticas, tanto a los opúsculos de filosofía natural y metafísica del período precrítico, como a los escritos, problemáticamente (...) llamados menores, publicados después de la primera Crítica, todos los cuales, al ser estudiados con rigurosidad, permiten lograr una visión de conjunto de las concepciones que Kant mantuvo en distintos momentos de su biografía intelectual y una comprensión clara de las pretensiones, motivos y resultados del sistema crítico en particular. Es cierto que en la literatura especializada sobre la obra de Kant en otros idiomas ha sido ampliamente reconocido que los conceptos de relevancia sistemática, histórica y filológica no se reducen a las tres Críticas, pero en nuestra lengua sigue siendo pertinente destacar este punto, tal como lo hace el profesor Rojas con la noción de historia. (shrink)

In this paper, we raise two points. First, any rights‐based theory should provide a method by which to guide reasoning in addressing conflicts of rights. The reason, we argue, is that these theories must provide guidance on what should be done. Second, this method must contain two key recommendations: (1) We should try to find a deliberative mechanism through which none of the rights is simply eliminated from the scene; (2) these rights may be balanced against each other to define (...) which right should prevail, but without considering non‐rights‐interests as if they were rights in the process. These recommendations instantiate two crucial principles that underlie our common intuitions on rights, namely, the principle that rights deserve equal respect and the principle that rights should be taken seriously. (shrink)

Kitcher has proposed an ideal-theory account—well-ordered science (WOS)— of the collective good that science’s research agenda should promote. Against criticism regarding WOS’s action-guidance, Kitcher has advised critics not to confuse substantive ideals and the ways to arrive at them, and he has defended WOS as a necessary and useful ideal for science policy. I provide a distinction between two types of ideal-theories that helps clarifying WOS’s elusive nature. I use this distinction to argue that the action-guidance problem that WOS faces (...) remains even under the aims/means distinction, because the WOS’s failure is more basic than critics have suggested. (shrink)

Um marco sobre a questão do tempo na História da Filosofia, o livro XI das Confissões de Agostinho de Hipona (354–430) ainda hoje recebe interpretações. O presente artigo menciona pontos que já apresentei noutro texto sobre o tempo como espelho da alma, no entanto ele recebe o acréscimo de dois pontos que mudam a ênfase de minha interpretação prévia: (1) a citação a Josué e (2) a escolha de Deus creator ominum para exemplificar a relação, via tempo, entre ser humano, (...) Deus e o mundo. Mediante a análise textual do livro XI, a seguinte conclusão será encaminhada: embora Agostinho não recuse a existência do tempo como uma realidade independente das vivências humanas, ele privilegia outro aspecto do tempo, medular nas Confissões, a saber, a relação humana com o tempo em correspondência com a intenção da vontade pela qual a vida humana é governada. Em Agostinho, o tempo da vida se compromete com a ética, e reflete o modo como a vontade habita a vida. Tempo e alma, nas Confissões, são interdependentes a ponto de a experiência humana do tempo ser um espelhamento da vontade. (shrink)

Is it justified to hold that an agent S has a (moral) right to P if the duty-bearer is not specified? There is an intense ongoing debate on this question. There are two positions in the literature. On the one hand, O´Neill´s much-discussed account of rights holds that it is justified to say that an agent S has a right to P if and only if the duty-bearer is sufficiently determined – i.e. if and only if it is clear against (...) whom S may claim her right to P (O’Neill 1986, 1988, 1996, 2000, 2005, 2016). Call this, the ‘claimability condition’. On the other hand, interest-based theorists argue that it can be justified to say that an agent S has a right to P even if the duty-bearer is not sufficiently determined (Caney 2007; Griffin, 2008; Raz 1988; Tasioulas 2007; see also: Etinson, 2013; Ypi 2010). Who (if anyone) is correct in this fundamental discussion about the very nature of rights? In this paper, I provide an answer to this crucial question. Neither O´Neill nor interest-based theorists provide good reasons to justify their positions. However, I argue, the claimability condition is an existence condition of rights justified on the basis of their action-guiding character. The reason is that if the duty-bearer is not specified, the content of the right (its correlative obligation) does not sufficiently guide what the agent should do because it is indeterminate who is required to act (or refrain from acting). (shrink)

Intellectual property regimes necessarily create artificial scarcity leading to wastage, both by blocking follow-up research and hindering access to those who are only able to pay less then the actual retail price. After revising the traditional arguments to hinder access to people’s intellectual labour we will examine why we should be more open to allow free-riding of inventive efforts, especially in cases where innovators have not secured the widest access to the fruits of their research and failed to cooperate with (...) follow-up innovators. We will do so by questioning the voluntariness involved in consumption of objects of innovation, restating the positive social externalities that arise when wider access to the fruits of innovation is assured, and examining the eventual harms innovators face. (shrink)

Food security brings a number of benefits to humanity from which nobody can be excluded and which can be simultaneously enjoyed by all. An economic understanding of the concept sees food security qualify as a global public good. However, there are four other ways of understanding a public good which are worthy of attention. A normative public good is a good from which nobody ought to be excluded. Alternatively, one might acknowledge the benevolent character of a public good. Others have (...) argued that public goods demand being public in the sense of being visible to all. Finally, it has also been argued that public goods are those goods which need joint action to be produced and maintained. This chapter discusses these five understandings of the public good in relation to food security and highlights the advantage of assessing policies from each of these perspectives. (shrink)

The debate about how neurotechnologies impact authenticity has focused on two inter-related dimensions: self-discovery and self-creation. In this paper, we develop a broader framework that includes the experimental and relational dimensions of authenticity, both understood as decisive for shaping one’s narrative identity. In our view, neurointerventions that alter someone’s personality traits will also impact her very own self-understanding across time. We argue that experimental authenticity only needs a minimum conception of narrative coherence of the self and that reversibility should remain (...) a key feature in the ethical assessment of neurotechnologies. The relational dimension of authenticity derives from the fact that a process of self-constitution is never a solitary business. The significant others act not just as subsequent judges of one’s life decisions, but as real co-authors of one’s self. We discuss relevant cases in which others are actively contributing to the meaning-making process, as to the direction one’s life is taking. We also claim that the experimental and the relational dimensions of authenticity should aim to correct each other. The relational dimension introduces socially approved standards as well as limitations to the array of available possibilities of self-fashioning or human enhancement. The experimental side enables us to avoid confusing one’s personal identity with a social and narrative construct that only bears the mark of social pressure and conformism. (shrink)

The mixture of political, social, cultural and economic environments in Latin America, together with the enormous diversity in climates, natural habitats and biological resources the continent offers, make the ethical assessment of agricultural policies extremely difficult. Yet the experience gained while addressing the contemporary challenges the region faces, such as rapid urbanization, loss of culinary and crop diversity, extreme inequality, disappearing farming styles, water and land grabs, malnutrition and the restoration of the rule of law and social peace, can be (...) of great value to other regions in similar latitudes, development processes and social problems. This chapter will provide a brief overview of these challenges from the perspective of a continent that is exposed to the consequences of extreme inequality in multiple dimensions and conclude by arguing for the need to have a continuous South-South dialogue on the challenges of establishing socially and environmentally sustainable food systems. (shrink)

The much-discussed “claimability objection” holds that it is unjustified to believe that all individuals have a human right to subsistence because the bearers of the correlative duties are not sufficiently determined. This argument is based on the so-called “claimability-condition”: S has a right to P if and only if the duty-bearer is sufficiently determined. Practice-based theorists defend the human right to subsistence by arguing that if we take the existing human rights practice seriously, there is no indeterminacy about the allocation (...) of duties. In this paper, I challenge this (apparently compelling) defense of the human right to subsistence with a dilemma. If the claimability condition is true, the practice-based defense fails to undermine the claimability objection because the duty-bearer is determined in some, but not all, cases. If practice-based theorists reject the claimability condition, they generate an account of human rights that is problematic from the practical perspective because it may contain duties that are unable to guide action. (shrink)

The forfeiture thesis is posed as an independent thesis in moral philosophy according to which agents forfeit (or lose) rights if they perform certain act-types. According to many, this thesis plays a crucial role in the justification of (legal) punishment. In this paper, I argue that the forfeiture thesis is unnecessary – we can simply dismiss it without any substantive loss. Echoing an aspect of the specificationist approach to rights, the reason is that we may replace the forfeiture thesis with (...) an exception clause in the very content of the right not to be subjected to hard treatment: P has no right not to be subjected to hard treatment simpliciter, but a right not to be subjected to hard treatment unless P performs an act-type φ – e.g., murdering an innocent person. This alternative has substantive advantages over the forfeiture thesis, which, in turn, shows that the former cannot be reduced to the latter. (shrink)

The organizational account of biological functions interprets functions as contributions of a trait to the maintenance of the organization that, in turn, maintains the trait. As has been recently argued, however, the account seems unable to provide a unified grounding for both intra- and cross-generation functions, since the latter do not contribute to the maintenance of the same organization which produces them. To face this ‘ontological problem’, a splitting account has been proposed, according to which the two kinds of functions (...) require distinct organizational definitions. In this article, we propose a solution for the ontological problem, by arguing that intra- and cross-generation functions can be said to contribute in the same way to the maintenance of the biological organization, characterized in terms of organizational self-maintenance. As a consequence, we suggest maintaining a unified organizational account of biological functions. (shrink)

Entre 1843 y 1844, uno de los conceptos centrales del pensamiento de Karl Marx es el de ser genérico. Es indudable en este concepto la herencia terminológica feuerbachiana, cuya principal referencia es el concepto de género. Sin embargo, este trabajo muestra que en su funcionamiento el ser genérico, lejos prolongar el concepto feuerbachiano, implica su refutación. Esto permite comprenderlo en una problemática más amplia de la obra de Marx: el proceso histórico de sustitución de las interrelaciones fundantes de los cuerpos (...) por su forma representada. (shrink)

El presente texto tiene como propósito analizar teórico-conceptualmente las prácticas pedagógicas de la ética implementadas por los docentes en la universidad tradicional y la universidad popular en los años 2010 – 2020. Teniendo en cuenta, primero, las características inherentes de la universidad tradicional tanto en sus orígenes y principios fundamentales; segundo, las practicas pedagógicas de la ética en el rol docente; y tercero, el advenimiento, desarrollo y propuesta de la Universidad popular. Mediante este análisis fue posible develar los paralelismos entre (...) sus divergencias y puntos de encuentro con base en la ética-práctica del rol docente, para el mejoramiento continuo tanto de esta área del conocimiento como de los demás saberes en general. (shrink)

En este artículo defendemos la existencia de un perspectivismo ontológico pluralista inherente a la filosofía de Baruch Spinoza. Indispensable para la constitución de esta noción es la relación establecida entre su teoría general de composición de los cuerpos y los conceptos de “afecto”, “inmanencia”, “potencia” y “multitud”. El objetivo de este análisis es una fundamentación interior del concepto de “puntos de vista”: es imposible pensarlo como una característica epistemológica de un individuo aislado, pero tampoco es posible unificarlo mediante el postulado (...) de una propiedad común. En consecuencia, el perspectivismo ontológico espinosista implica una teoría del punto de vista pluralista que elude los problemas planteados por la clausura del modelo Uno-Todo. (shrink)