En On the Origin of Species Darwin distingue explícitamente entre tres tipos de selección: la selección natural, la artificial y la sexual. En este trabajo, a partir de un estudio más sistemático que historiográfico, se intenta encontrar la relación entre estos tres tipos de selección en la obra de Darwin. Si bien la distinción entre estos distintos mecanismos es de suma importancia en la obra de Darwin, la tesis de este trabajo es que tanto la selección artificial como la sexual (...) no son mecanismos distintos de la selección natural. Particularmente se sostiene que la selección artificial y la sexual son casos de la natural, y por esto sirven para su contrastación. (shrink)

When our measurement instruments sample from only a subspace of the domain that we are seeking to understand, or when they sample with uneven sampling density from the target domain, the resulting data will be affected by a selection effect. If we ignore such selection effects, our conclusions may suffer from selection biases. A classic example of selection bias is the election poll taken by the Literary Digest in 1936. On the basis of a large survey, the Digest predicted that (...) Alf Langdon, the Republican presidential candidate, would win by a large margin. But the actual election resulted in a landslide for the incumbent, Franklin D. Roosevelt. How could such a large sample yield such a wayward prediction? The Digest, it turned out, had harvested the addresses for its survey mainly from telephone books and motor vehicle registries. This introduced a strong selection effect. The poor of the depression era, a group that disproportionally supported Roosevelt, often did not have phones or cars. Observation selection effects are an especially subtle kind of selection effect that is introduced not by limitations in our measurement apparatuses but by the fact that all evidence is preconditioned on the existence of an observer to “have” the evidence and to build the instruments in the first place. Observation selection effects have only quite recently become the subject of systematic study. As well as being of philosophical interest, they are important in many scientific areas, including cosmology, parts of evolution theory, and the foundations of thermodynamics and quantum theory. There are also interesting applications to the search for extraterrestrial life and questions such as whether we might be living in a computer simulation created by an advanced civilization.. (shrink)

The question whether ethical behavior is biologically determined may refer either to the capacity for ethics (i.e., the proclivity to judge human actions as either right or wrong), or to the moral norms accepted by human beings for guiding their actions. I herein propose: (1) that the capacity for ethics is a necessary attribute of human nature; and (2) that moral norms are products of cultural evolution, not of biological evolution. Humans exhibit ethical behavior by nature because their biological makeup (...) determines the presence of three necessary conditions for ethical behavior: (i) the ability to anticipate the consequences of one’s own actions; (ii) the ability to make value judgments; and (iii) the ability to choose between alternative courses of action. Ethical behavior came about in evolution not because it is adaptive in itself, but as a necessary consequence of man’s eminent intellectual abilities, which are an attribute directly promoted by natural selection. That is, morally evolved as an exaptation, not as an adaptation. Since Darwin’s time there have been evolutionists proposing that the norms of morality are derived from biological evolution. Sociobiologists represent the most recent and most subtle version of that proposal. The sociobiologists' argument is that human ethical norms are sociocultural correlates of behaviors fostered by biological evolution. I argue that such proposals are misguided and do not escape the naturalistic fallacy. The isomorphism between the behaviors promoted by natural selection and those sanctioned by moral norms exist only with respect to the consequences of the behaviors; the underlying causations are completely disparate. (shrink)

One of the most controversial and currently developed lines of research in philosophy of biology is that in which philosophers investigate pre-Darwinian assumptions that would still be present at the base of other philosophical sub-disciplines, such as ethics, epistemology, philosophy of language, etc. This type of inquiry, which I will call here “meta-philosophical interrogation,” can be thought as a complementary approach to the epistemological one, which allows us to broaden the critical approach of the discipline in question. The objective of (...) this article will be to analyze the characteristics of the “meta-philosophical interrogation” and to argue about its legitimacy as a way of inquiry proper to the philosophy of biology. (shrink)

One of the most controversial and currently developed lines of research in philosophy of biology is that in which philosophers investigate pre-Darwinian assumptions that would still be present at the base of other philosophical sub-disciplines, such as ethics, epistemology, philosophy of language, etc. This type of inquiry, which I will call here “meta-philosophical interrogation,” can be thought as a complementary approach to the epistemological one, which allows us to broaden the critical approach of the discipline in question. The objective of (...) this article will be to analyze the characteristics of the “meta-philosophical interrogation” and to argue about its legitimacy as a way of inquiry proper to the philosophy of biology. (shrink)

Originally published: New York: H. Holt and Co., 1910.

Dear Mother Nature: Sorry to disturb you, but we humans – your offspring – come to you with some things to say. (Perhaps you could pass this on to Father, since we never seem to see him around.).

In this book Ron Amundson examines two hundred years of scientific views on the evolution-development relationship from the perspective of evolutionary developmental biology. This perspective challenges several popular views about the history of evolutionary thought by claiming that many earlier authors had made history come out right for the Evolutionary Synthesis. The book starts with a revised history of nineteenth-century evolutionary thought. It then investigates how development became irrelevant with the Evolutionary Synthesis. It concludes with an examination of the contrasts (...) that persist between mainstream evolutionary theory and evo-devo. This book will appeal to students and professionals in the philosophy and history of science, and biology. (shrink)

Durante las últimas tres décadas, la Neurociencia ha logrado avances espectaculares, pero la investigación tiene ante sí graves retos. Comentamos proyectos actuales de investigación neurocientífica, como el Proyecto Conectoma, el Proyecto Brain, y el Human Brain Proyect. Estudiamos la confluencia de las tecnologías biomédicas e ingeniería genética con la inteligencia artificial y computación, y el impacto que tienen en el conocimiento del mundo exterior y de nosotros mismos. Identificamos potencialidades y amenazas de las nuevas tecnologías y la contribución a la (...) conformación del pensamiento posthumanista. (shrink)

The analogy between artificial selection of domestic varieties and natural selection in nature was a vital element of Darwin's argument in his Origin of Species. Ever since, the image of breeders creating new varieties by artificial selection has served as a convincing illustration of how the theory works. In this paper I argue that we need to reconsider our understanding of Darwin's analogy. Contrary to what is often assumed, nineteenth-century animal breeding practices constituted a highly controversial field that was fraught (...) with difficulties. It was only with considerable effort that Darwin forged his analogy, and he only succeeded by downplaying the importance of two other breeding techniques - crossing of varieties and inbreeding - that many breeders deemed essential to obtain new varieties. Part of the explanation for Darwin's gloss on breeding practices, I shall argue, was that the methods of his main informants, the breeders of fancy pigeons, were not representative of what went on in the breeding world at large. Darwin seems to have been eager to take the pigeon fanciers at their word, however, as it was only their methods that provided him with the perfect analogy with natural selection. Thus while his studies of domestic varieties were important for the development of the concept of natural selection, the reverse was also true: Darwin's comprehension of breeding practices was moulded by his understanding of the working of natural selection in nature. Historical studies of domestic breeding practices in the eighteenth and nineteenth century confirm that, besides selection, the techniques of inbreeding and crossing were much more important than Darwin's interpretation allowed for. And they still are today. This calls for a reconsideration of the pedagogic use of Darwin's analogy too. (shrink)

El propósito de este artículo es mostrar algunos aspectos ideológicos de la concepción de la tecnología y del ser humano que subyacen en el transhumanismo. Se intentan demostrar estos aspectos a la luz de la antropología filosófica de Scheler, Plessner y otros autores mediante los siguientes argumentos: la crítica a la concepción neutral de la tecnología, el rechazo de la idea del ser humano como homo faber y la errónea comprensión transhumanista de la vida y la muerte. A partir de (...) una puesta en discusión de este movimiento con la antropología filosófica se comprueba que no hay ningún cambio de paradigma dentro del transhumanismo y que las viejas concepciones del ser humano que habían sido defendidas por la Modernidad siguen estando presentes. (shrink)