Uma forma de compreender o humano é pela sua biologia, a qual pode ser vista como ambígua. Por um lado, há características biológicas correlacionadas a capacidades extremamente especializadas e complexas, as quais abrem possibilidades que lhe são particulares, distinguindo-o ‘positivamente’ dos outros seres vivos. Por outro, como todo ser vivo, há características que tornam a vida humana finita e relativamente vulnerável, as quais costumam ser ‘negativamente’ interpretadas. Em ambos os casos, há características biológicas que, em si, não são boas nem (...) más, apenas são, constituindo uma espécie biológica. No debate bioético, tem havido uma passagem direta de fatos para valores, de modo que o fato do humano ser biologicamente vulnerável justificaria uma opção valorativa pela superação de algumas características biológicas. Postulando uma tensão entre fatos e valores, nosso objetivo é mostrar a pertinência de submeter os meios biotecnocientíficos de melhoramento humano à regulação proveniente da proteção da liberdade de escolha baseada na autocompreensão existencial do indivíduo (que chamaremos de escolha hermenêutica), medida fundamental para evitar ou combater formas de opressão num contexto biopolítico. (shrink)

In “The Origin of Species,” Darwin describes a hypothetical example illustrating that large, slowly reproducing mammals such as the elephant can reach very large numbers if population growth is not affected by regulating factors. The elephant example has since been cited in various forms in a wide variety of books, ranging from educational material to encyclopedias. However, Darwin’s text was changed over the six editions of the book, although some errors in the mathematics persisted throughout. In addition, full details of (...) the problem remained hidden in his correspondence with readers of the Origin. As a result, Darwin’s example is very often misinterpreted, misunderstood or presented as if it were a fact. We show that the population growth of Darwin’s elephant population can be modeled by the Leslie matrix method, which we generalize here to males as well. Darwin’s most often cited figure, about 19 million elephants after 750 years is not a typical outcome, actually a very unlikely result under more realistic, although still hypothetical situations. We provide a recursion formula suggesting that Darwin’s original model corresponds to a tribonacci series, a proof showing that sex ratio is constant over all age classes, and a derivation of a generating function of the sequence. (shrink)

Regan appeals to the benefit of the doubt as a reason to include some animals within the scope of his arguments about the rights of animals. I think the informal appeal to the benefit of the doubt can be fleshed out and made more compelling. What I shall do differs from his project, however. It is narrower in scope, because I shall focus on a single issue, the dietary use of animals. On another dimension, though, I aim to do more. (...) Regan thinks that it is “not unreasonable” to extend the benefit of the doubt, and that it is better to do so. I shall be arguing that it is unreasonable not to do so. (shrink)

In this paper I review some theoretical exchanges and empiricalresults from recent work on human behavior and cognition in thehope of indicating some productive avenues for critical engagement.I focus particular attention on methodological debates between Evolutionary Psychologists and behavioral ecologists. I argue for a broader and more encompassing approach to the evolutionarily based study of human behavior and cognition than either of these two rivals present.

(No abstract is available for this citation).

In this discussion, Steve Fuller’s book Dissent over Descent is criticized mainly because he draws conclusions from wishful thinking and uses ancient and medieval scientists as well as theologians in his efforts to invalidate the theory of evolution. He is also criticized for drawing universal conclusions from a Eurocentric version of history. If science and technology studies is to regain its reputation, its representatives have to use relevant statements and argue more rationally.