Biological boundaries are important because of what they reveal about the evolution of a lineage, the relationship between organisms of different lineages, the structure and function of particular subsystems of the organism, the interconnection between an organism and its environment, and a myriad of other important issues related to individuality, development, and evolution. Since there is no single unifying theory for all biological sciences, there are various possible theoretical characterizations of what counts as a biological boundary. Theoretical specificity is crucial (...) for the full characterization of a boundary; to this end, it is useful to begin with general properties and then to compare these to those properties specific to a particular biological boundary. This dual heuristic approach—top-down and bottom-up—can then be repeated to increase the robustness of the boundary characterization. In what follows, I explore both the general structural and functional aspects of biological boundaries and those specific to a biological subsystem, which itself is critical to boundary formation, maintenance, and evolution—the vertebrate immune system. It is a remarkable and sobering regularity of nature that organisms remain whole because their parts are constantly being built up and broken down, and this is no less true of their boundaries. The vertebrate immune system is at the center of this process of biological boundary maintenance and breakdown. (shrink)

The intersection of ELSI and science forms a complicated nexus yet their integration is an important goal both for society and for the successful advancement of science. In what follows, I present a heuristic that makes boundary identification and crossing an important tool in the discovery of potential areas of ethical, legal, and social concern in science. A dynamic and iterative application of the heuristic can lead towards a fuller integration and appreciation of the concerns of ELSI and of science (...) from both sides of the divide. (shrink)

A participant–observer who is both informed and interested in ethical issues, and is embedded within a nanotechnology research and development facility may be able to influence the ethical awareness of researchers in nanotechnology, and tease out the societal implications of the work being conducted. Two inter-disciplinary methods were employed: (1) regular involvement in the technical and scientific research at the facility by the participant–observer, and (2) repeated interactions and discussions between the participant–observer and the scientists. As a result of this (...) qualitative approach, an ethics questionnaire was developed and tested. This questionnaire has been incorporated into the admissions procedures for researchers as they commence use of the nanotech facility. The questionnaire highlights the importance of ethical issues in nanotechnology research and draws researchers into an engagement with possible ethical consequences and with future societal implications of their work. (shrink)

La investigación ecológica a largo plazo (Long Term Ecological Research, LTER) maneja problemas que abarcan décadas o plazos más largos. El programa y su nombre formal comenzaron en Estados Unidos en 1980. Si bien los estudios y observaciones a largo plazo comenzaron tempranamente en 1400 y 1800 en Asia y Europa, respectivamente, el enfoque a largo plazo no se formalizó sino hasta el establecimiento de los programas de investigación ecológica de largo plazo en Estados Unidos. Estos programas han permitido experimentos (...) a nivel de ecosistemas y comparaciones entre sitios que condujeron a una mejor comprensión de la estructura y funcionamiento de la biosfera. El enfoque ecosistémico holístico de esta iniciativa permite también la incorporación de la dimensión humana en la ecología, y recientemente ha dado lugar al nuevo concepto de investigación socio-ecológica de largo plazo (LTSER). Hoy los programas de investigación socio-ecológica a largo plazo existen en por lo menos 32 países (esto es, los miembros de la Red Internacional de Investigación Ecológica a Largo Plazo o ILTER (International Long Term Ecological Research). Sin embargo, la consolidación de la red internacional dentro del paradigma de investigación socio-ecológica a largo plazo todavía requiere: (1) inclusión de algunas regiones remotas del mundo que aún están poco representadas, como el suroeste de América del Sur; (2) modificaciones en el tipo de investigación realizado, tales como la integración de las ciencias sociales y naturales con las humanidades y la ética, y (3) la incorporación de las conclusiones y resultados dentro de los procesos sociales y políticos. En este contexto, la naciente red de investigación socio-ecológica a largo plazo en Chile, que se extiende en el rango latitudinal más largo de bosque templado en el Hemisferio Sur, agrega una nueva región remota a las investigaciones ecológicas de largo plazo que había sido pasada por alto anteriormente. Además, la colaboración con la Universidad de North Texas y otros asociados internacionales ayuda a desarrollar un enfoque interdisciplinario para integrar las ciencias ecológicas y la filosofía ambiental, junto con los conocimientos ecológicos tradicionales, la educación informal y formal, la política, las humanidades, los procesos socio-políticos y la conservación biocultural. (shrink)

La investigación ecológica a largo plazo (Long Term Ecological Research, LTER) maneja problemas que abarcan décadas o plazos más largos. El programa y su nombre formal comenzaron en Estados Unidos en 1980. Si bien los estudios y observaciones a largo plazo comenzaron tempranamente en 1400 y 1800 en Asia y Europa, respectivamente, el enfoque a largo plazo no se formalizó sino hasta el establecimiento de los programas de investigación ecológica de largo plazo en Estados Unidos. Estos programas han permitido experimentos (...) a nivel de ecosistemas y comparaciones entre sitios que condujeron a una mejor comprensión de la estructura y funcionamiento de la biosfera. El enfoque ecosistémico holístico de esta iniciativa permite también la incorporación de la dimensión humana en la ecología, y recientemente ha dado lugar al nuevo concepto de investigación socio-ecológica de largo plazo (LTSER). Hoy los programas de investigación socio-ecológica a largo plazo existen en por lo menos 32 países (esto es, los miembros de la Red Internacional de Investigación Ecológica a Largo Plazo o ILTER (International Long Term Ecological Research). Sin embargo, la consolidación de la red internacional dentro del paradigma de investigación socio-ecológica a largo plazo todavía requiere: (1) inclusión de algunas regiones remotas del mundo que aún están poco representadas, como el suroeste de América del Sur; (2) modificaciones en el tipo de investigación realizado, tales como la integración de las ciencias sociales y naturales con las humanidades y la ética, y (3) la incorporación de las conclusiones y resultados dentro de los procesos sociales y políticos. En este contexto, la naciente red de investigación socio-ecológica a largo plazo en Chile, que se extiende en el rango latitudinal más largo de bosque templado en el Hemisferio Sur, agrega una nueva región remota a las investigaciones ecológicas de largo plazo que había sido pasada por alto anteriormente. Además, la colaboración con la Universidad de North Texas y otros asociados internacionales ayuda a desarrollar un enfoque interdisciplinario para integrar las ciencias ecológicas y la filosofía ambiental, junto con los conocimientos ecológicos tradicionales, la educación informal y formal, la política, las humanidades, los procesos socio-políticos y la conservación biocultural. (shrink)

La investigación ecológica a largo plazo (Long Term Ecological Research, LTER) maneja problemas que abarcan décadas o plazos más largos. El programa y su nombre formal comenzaron en Estados Unidos en 1980. Si bien los estudios y observaciones a largo plazo comenzaron tempranamente en 1400 y 1800 en Asia y Europa, respectivamente, el enfoque a largo plazo no se formalizó sino hasta el establecimiento de los programas de investigación ecológica de largo plazo en Estados Unidos. Estos programas han permitido experimentos (...) a nivel de ecosistemas y comparaciones entre sitios que condujeron a una mejor comprensión de la estructura y funcionamiento de la biosfera. El enfoque ecosistémico holístico de esta iniciativa permite también la incorporación de la dimensión humana en la ecología, y recientemente ha dado lugar al nuevo concepto de investigación socio-ecológica de largo plazo (LTSER). Hoy los programas de investigación socio-ecológica a largo plazo existen en por lo menos 32 países (esto es, los miembros de la Red Internacional de Investigación Ecológica a Largo Plazo o ILTER (International Long Term Ecological Research). Sin embargo, la consolidación de la red internacional dentro del paradigma de investigación socio-ecológica a largo plazo todavía requiere: (1) inclusión de algunas regiones remotas del mundo que aún están poco representadas, como el suroeste de América del Sur; (2) modificaciones en el tipo de investigación realizado, tales como la integración de las ciencias sociales y naturales con las humanidades y la ética, y (3) la incorporación de las conclusiones y resultados dentro de los procesos sociales y políticos. En este contexto, la naciente red de investigación socio-ecológica a largo plazo en Chile, que se extiende en el rango latitudinal más largo de bosque templado en el Hemisferio Sur, agrega una nueva región remota a las investigaciones ecológicas de largo plazo que había sido pasada por alto anteriormente. Además, la colaboración con la Universidad de North Texas y otros asociados internacionales ayuda a desarrollar un enfoque interdisciplinario para integrar las ciencias ecológicas y la filosofía ambiental, junto con los conocimientos ecológicos tradicionales, la educación informal y formal, la política, las humanidades, los procesos socio-políticos y la conservación biocultural. (shrink)

This paper analyses the activities of five organizations shaping the debate over the global governance of genome editing in order to assess current approaches to public engagement (PE). We compare the recommendations of each group with its own practices. All recommend broad engagement with the general public, but their practices vary from expert-driven models dominated by scientists, experts, and civil society groups to citizen deliberation-driven models that feature bidirectional consultation with local citizens, as well as hybrid models that combine elements (...) of both approaches. Only one group practices PE that seeks community perspectives to advance equity. In most cases, PE does little more than record already well-known views held by the most vocal groups, and thus is unlikely to produce more just or equitable processes or policy outcomes. Our exploration of the strengths, weaknesses, and possibilities of current forms of PE suggests a need to rethink both “public” and “engagement.”. (shrink)

Emotions are complex reactions that allow individuals to cope with significant positive and negative events. Research on emotion was pioneered by Darwin’s (1871) work on emotional expressions in humans and animals. But Darwin was concerned mainly with facial and bodily expressions of significance for humans, citing mainly examples from mammals (e.g., apes, dogs, and cats). In birds, emotional expressions are less evident for a human observer, so a different approach is needed. Understanding avian emotions will provide key evolutionary information on (...) the evolution of related behaviors and brain circuitry. Birds and mammals are thought to have evolved from different groups of Mesozoic reptiles, theropod dinosaurs and therapsids, respectively, and therefore their common ancestor is likely to be a basal reptile living about 300 million years ago, during the Carboniferous or Permian. Yet, birds and mammals exhibit extensive convergence in terms of relative brain size, high levels of activity, sleep/wakefulness cycles, endothermy, and social behavior, among others. This article focuses on two basic emotions with negative valence: fear and frustration. Fear is related to the anticipation of dangerous or threatening stimuli (e.g., predators or aggressive conspecifics). Frustration is related to unexpected reward omissions or devaluations (e.g., loss of food or sexual resources). These results have implications for an understanding of the conditions that promote fear and frustration, and for the evolution of supporting brain circuitry. (shrink)

Abstract: In the present work we have made a critical review of the philosophical propo­ sal of Norwood R. Hanson with the aim of exposing the limits of its theoretical approach on the problem of interpretation in science. The first part of this work exposes the hansonian project, looking for evidence of his contributions to the philosophy of science and scientific thinking. In the following two sections we present a critique to his philosophical proposal. We present two exercises of philosophical (...) reflection that constitute two complementary moments of analysis. On one hand, at the level of methodological analysis, we present a discussion about how the “reversible perspective figures” that have been used for the author as arguments to explain his philosophical proposal, are insufficient to the descrip­ tion of the process of observation and interpretation. On the other hand, at the theoretical level, we question his notion of language and categories to show that his theoretical pro­ posed “vision-interpretation” has based on epistemological and analytic notions. From this perspective, it will be shown that the “hermeneutical-interpretative” approach of Hanson is incomplete, since it does not develop towards an ontology of language and observation. (shrink)

This chapter aims to establish a philosophical discussion about the epistemological conditions of “observation”, from the cybersemiotic transdisciplinary view of knowing. For this purpose, the discussion will be divided into three parts, each one of them with the intention of outlining a conceptual critique that later allows a pertinent justification of the observation from a transcendental semiotics. This work is based on a problem: it seeks to show that a the cybersemiotic point of view, to consider on a foundationalist stance, (...) fails to overcome the epistemological contradictions involved in the contemporary critique of modern philosophy. Hence, the objective on this work is to propose as an alternative the teleological and nominalist attitude of transcendental semiotics, and also as an epistemological principle that allows overcoming problems of the foundationalist. Then, in a first moment, we will seek to establish a critique of the phenomenology of observation from the pragmatic point of view, developed by N. R. Hanson and Richard Rorty. In this direction, the contradictions involved in the definition of knowledge will be shown from the phenomenological and phenomenological positions. In general terms, the epistemological problems found in the foundations of knowledge based on observation will be exposed: specifically, the problem of the empirical basis and perception and the question of the mind as an inner space. Then, in a second moment, a characterization of the “observation” and the “observable fact” will be made from the cybersemiotic point of view. In this sense, these concepts will be described from the peircean semiosis, starting from the theoretical link proposed by Søren Brier. Hence, when considering the observation within the sphere of significance, the approaches will show a non-phenomenological characterization of knowledge and, from there, the overcoming of pragmatic critiques towards phenomenology. The closing will allow circumscribing knowledge from a communicative, semiotic and autopoietic approach. Finally, and as a contribution to the state of the discussion, the present chapter will make a defense of the cybersemiotic phenomenology of observation but considering the pragmatic conditions of knowledge from a transcendental semiotics perspective. In this sense, the transcendental concepts of truth-consensus and fin-ideal will be used to develop a relevant theoretical field that allows a transcendental justification of the communicative-intersubjective nature of knowledge postulated by cybersemiotics. (shrink)

This article considers distinct ways of understanding the world, referred to in psychology as Functions of Consciousness or as Cognitive Modes, having as the scope of interest epistemology and natural sciences. Inspired by C.G. Jung's Simile of the Spectrum, we consider three basic cognitive modes associated to: (R) embodied instinct, experience, and action; (G) reality perception and learning; and (B) concept abstraction, rational thinking, and language. RGB stand for the primary colors: red, green, and blue. Accordingly, a conceptual map between (...) cognitive modes and primary and secondary colors is built based on the physics and physiology of color perception and epistemological characteristics of the aforementioned cognitive modes, leading to logical relations structured as an Hexagon of Opposition. Finally, this model of cognitive modes is applied to the analysis and interpretation of some important episodes in the historical development of physics and technology. (shrink)

This chapter aims to establish a philosophical discussion about the epistemological conditions of “observation”, from the cybersemiotic transdisciplinary view of knowing. For this purpose, the discussion will be divided into three parts, each one of them with the intention of outlining a conceptual critique that later allows a pertinent justification of the observation from a transcendental semiotics. This work is based on a problem: it seeks to show that a the cybersemiotic point of view, to consider on a foundationalist stance, (...) fails to overcome the epistemological contradictions involved in the contemporary critique of modern philosophy. Hence, the objective on this work is to propose as an alternative the teleological and nominalist attitude of transcendental semiotics, and also as an epistemological principle that allows overcoming problems of the foundationalist. Then, in a first moment, we will seek to establish a critique of the phenomenology of observation from the pragmatic point of view, developed by N. R. Hanson and Richard Rorty. In this direction, the contradictions involved in the definition of knowledge will be shown from the phenomenological (perception without representation) and phenomenological (states of inner consciousness) positions. In general terms, the epistemological problems found in the foundations of knowledge based on observation will be exposed: specifically, the problem of the empirical basis and perception and the question of the mind as an inner space. Then, in a second moment, a characterization of the "observation" and the "observable fact" will be made from the cybersemiotic point of view. In this sense, these concepts will be described from the peircean semiosis, starting from the theoretical link proposed by Soren Brier. Hence, when considering the observation within the sphere of significance, the approaches will show a non-phenomenological characterization of knowledge and, from there, the overcoming of pragmatic critiques towards phenomenology. The closing will allow circumscribing knowledge from a communicative, semiotic and autopoietic approach. Finally, and as a contribution to the state of the discussion, the present chapter will make a defense of the cybersemiotic phenomenology of observation but considering the pragmatic conditions of knowledge from a transcendental semiotics perspective. In this sense, the transcendental concepts of truth-consensus and fin-ideal will be used to develop a relevant theoretical field that allows a transcendental justification of the communicative-intersubjective nature of knowledge postulated by cybersemiotics. (shrink)

This article considers distinct ways of understanding the world, referred to in psychology as functions of consciousness or as cognitive modes, having as the scope of interest epistemology and natural sciences. Inspired by C.G. Jung’s simile of the spectrum, we consider three basic cognitive modes associated to: (R) embodied instinct, experience, and action; (G) reality perception and learning; and (B) concept abstraction, rational thinking, and language. RGB stand for the primary colors: red, green, and blue. Accordingly, a conceptual map between (...) cognitive modes and primary and secondary colors is built based on the physics and physiology of color perception and epistemological characteristics of the aforementioned cognitive modes, leading to logical relations structured as an hexagon of opposition. Finally, this model of cognitive modes is applied to the analysis and interpretation of some important episodes in the historical development of physics and technology. (shrink)

In this paper I manage a set of categories and intended to integratethem as a method to analyze film images in a conceptual level. I try anapplication of this methodological tool in the particular case of AlfredHitchcock’s Vertigo, which I consider as an image-concept of the untruthfulcharacter of r..

Two experiments compared “Red-Green” dichromats’ empirical and metacognized capacities to discriminate basic color categories and to use the corresponding basic color terms. A first experiment used a 102-related-colors set for a pointing task to identify all the stimuli that could be named with each BCT by each R-G dichromat type. In a second experiment, a group of R-G dichromats estimated their difficulty discriminating BCCs-BCTs in a verbal task. The strong coincidences between the results derived from the pointing and the verbal (...) tasks indicated that R-G dichromats have very accurate metacognition about their capacities and limitations in the use of BCTs. Multidimensional scaling solutions derived from both tasks were very similar: BCTs in R-G dichromats were properly represented in 2D MDS solutions that clearly show one chromatic dimension and one achromatic dimension. Important concordances were found between protanopes and deuteranopes. None of these dichromats showed substantial difficulty discriminating the Red-Green pair. So, to name them “R-G” dichromats is misleading considering their empirical capacities and their metacognition. Further reasons to propose the use of the alternative denomination “Brown-Green” dichromats are also discussed. We found some relevant differences between the “Brown-Green” dichromats’ empirical and self-reported difficulties using BCTs. Their metacognition can be considered a “caricature” of their practical difficulties. This caricature omits some difficulties including their problems differentiating “white” and “black” from other BCTs, while they overestimate their limitations in differentiating the most difficult pairs. Individual differences scaling analyses indicated that the metacognition regarding the use of BCTs in “Brown-Green” dichromats, especially deuteranopes, is driven slightly more by the chromatic dimension and driven slightly less by the achromatic dimension, than their practical use of BCTs. We discuss the relevance of our results in the framework of the debate between the linguistic relativity hypothesis and the universal evolution theories. (shrink)

The contemporary debate that discusses whether the content of perceptual experience is or not conceptual claims I. Kant as its precursor. Surprisingly, both contenders in this debate do so. The Kantian non conceptualists, R. Hanna and L. Allais, among others, have support their arguments on Kant´s insistence on clearly separating intuitions and concepts and the faculties that make them possible, sensibility and understanding in order to emphasize that, once divided according to their functions, it makes sense to think that experience (...) emerges from the collaboration between those two faculties. In this paper I want to make an argument in favor of the non-conceptualist interpretation of Kant. In a nutshell, my argument goes as follows: If, as the Kantian conceptualists say, concepts already operate in sensibility, why would it be necessary to postulate an independent device that helps close the bridge between sensibility and understanding? Why is there a need for schematism? I will defend the legitimacy of that tertium as a mediator element that resolves the problem of the subsumption of particulars under concepts, and with that I will make an argument for the separability between intuitions and concepts. (shrink)

The notion of monadic three-valued ukasiewicz algebras was introduced by L. Monteiro ([12], [14]) as a generalization of monadic Boolean algebras. A. Monteiro ([9], [10]) and later L. Monteiro and L. Gonzalez Coppola [17] obtained a method for the construction of a three-valued ukasiewicz algebra from a monadic Boolea algebra. In this note we give the construction of a monadic three-valued ukasiewicz algebra from a Boolean algebra B where we have defined two quantification operations and * such that *x=*x (where (...) *x=-*-x). In this case we shall say that and * commutes. If B is finite and is an existential quantifier over B, we shall show how to obtain all the existential quantifiers * which commute with .Taking into account R. Mayet [3] we also construct a monadic three-valued ukasiewicz algebra from a monadic Boolean algebra B and a monadic ideal I of B. (shrink)

I. Introducción: el horizonte verificacionista de la explicación del significado de las oraciones constatativas en la filosofía analítica del lenguaje.II. La aporética de la explicación verificacionista del significado en la filosofía analítica del lenguaje.II. 1. Explicación del significado ilocucionario de las oraciones o actos de habla no constatativos en los términos de "condiciones de realización". -Sobre la aporética del paradigma verificacionista en P. Strawson.II. 2. Explicación del significado ilocucionario de las oraciones o de los actos de habla no constatativos en (...) términos de las "condiciones de satisfacción" referidas a intenciones. -Sobre la aporética del paradigma verificacionista en J. R. Searle.III. La explicación pragmática universal o trascendental del significado ilocucionario de las oraciones o actos de habla en términos de las condiciones de validez.III. 1. El planteo de la pragmática universal sobre la explicación del significado ilocucionario en términos de aceptabilidad de las pretensiones de validez y el problema residual de la aceptación fáctica de las pretensiones ilocucionarias de poder.III. 2. La solución habermasiana del mencionado problema residual mediante la comprobación de la "dependencia parasitaria" del uso encubiertamente estratégico del lenguaje con respecto al uso del lenguaje orientado al entendimiento y el nuevo problema residual del uso abiertamente estratégico del lenguaje.III. 3. La resolución del problema residual del uso abiertamente estratégico del lenguaje por medio del recurso a la reflexión pragmático trascendental sobre las presuposiciones del discurso argumentativo. (shrink)

The author argues that polity and policies of Getúlio Vargas’s Estado Novo cannot be fully understood without exploring the legacy of Rio Grande do Sul. The southern state’s first republican governor, Júlio de Castilhos, had taken inspiration in Auguste Comte’s multifaceted political philosophy and inculcated its authoritarian traits into political institutions. Yet, he and his followers substantially adapted Comte’s positivism to the specific economic and political circumstances in their republiqueta sui generis. In contrast to Comte, the State merged temporal and (...) spiritual powers to pursue evolutionary political changes, a balanced socioeconomic modernisation, and the incorporation of the populus qua paternalistic public policies, and all this with a strong focus on education. Changing contexts resulted in further adjustments, when Vargas became governor in 1928: an ‘orderly’ inclusion of the opposition into the polity, a stronger state interventionism in the economy and labor market, and an experimentation with state corporatism. These experiences paved the way for this comtismo-turned-castilhismo-turning-varguismo to enter the national stage two years later. Despite all the compromises with other contenders for power that Vargas had to make thereafter, he and his gaúcho and other co-opted protégés remained united in the strong belief in technical solutions to social problems and a quest for rational institutions to carry out transformative policies. For them, the State was to be agent of development, tutor of corporate interest groups, and now also guarantor of national security. While highlighting the significant, and still underestimated, impact of French positivism on Vargas’s first 15 years in government, the article places emphasis on the pragmatic dimensions of its appropriation, propagation, and reinterpretation by two generations of state-builders. (shrink)

In this piece I respond to commentaries by Julio De Rizzo & Benjamin Schnieder, Erwin Tegtmeier and William Vallicella on my book Metaphysics of States of Affairs (Springer, 2018).

What is conscientious objection? -- Should conscientious objectors be accommodated? -- Assessing objectors' beliefs and reasons -- Accommodation and conscientious provision.

Ethics support staff help others to deal with moral challenges. However, they themselves can also experience moral challenges such as issues regarding (breaching) confidentiality when practicing ethics support. Currently there is no insight in these confidentiality issues and also no professional guidance for dealing with them. To gain insight into moral challenges related to Moral Case Deliberation (MCD), we studied a) beliefs and experiences of MCD facilitators regarding breaching confidentiality, b) considerations for (not) breaching confidentiality, and c) needs for an (...) ethics support tool. Data collection consisted of qualitative research methods: six semi-structured interviews; analyses of a) two recorded MCD sessions, and b) a focus group with MCD facilitators. Findings: MCD facilitators mention different conceptions and interpretations of confidentiality and various moral challenges. Questions concerning confidentiality ultimately cause reflections on roles and responsibilities of facilitators. Needs for ethics support vary from seeking advice to procedural and sometimes normative guidance for MCD facilitators. Education for MCD facilitators should focus on developing a concrete tool that stimulates awareness and reflection(skills). (shrink)

THIS PAPER INVESTIGATES THE LAWS OF MOTION in Newton and Descartes, focusing initially on the first laws of each. Newton's first law and Descartes' first law were later conjoined in the minds of philosophic interpreters in what thereafter came to be called the law of inertia. Our analysis of this law will lead to the special significance of Newton's third law, and thus to a consideration of the philosophical implications of Newton's three laws of motion taken as a whole. This (...) paper also involves backward glances at an earlier tradition of physics: How do the laws of motion compare with certain basic elements of the philosophy of nature? Principal results and conclusions are: There is no one law of inertia; rather, Newton's first law is distinct from Descartes' in its implications for our understanding of nature. The concept of force entailed by Newton's three laws of motion is not the same as cause of motion as we ordinarily experience and understand it. Newton's three laws, unlike Descartes', do not rule out internal causes of motion in bodies, and are, therefore, compatible with the traditional definition of nature. The motor causality principle, often stated as "all that is moved is moved by another," is not as such incompatible with Newton's three laws of motion. (shrink)