The applicability of Nagel's concept of theory reduction, and related concepts of reduction, to the reduction of genetics to molecular biology is examined using the lactose operon in Escherichia coli as an example. Geneticists have produced the complete nucleotide sequence of two of the genes which compose this operon. If any example of reduction in genetics should fit Nagel's analysis, the lactose operon should. Nevertheless, Nagel's formal conditions of theory reduction are inapplicable in this case. Instead, it is argued that (...) genetics has been partially reduced to molecular biology in the sense of token-token reduction. (shrink)
Confirmation functions are generally thought of as probability functions. The well known difficulties associated with the probabilistic confirmation functions proposed to date indicate that functions other than probability functions should be investigated for the purpose of developing an adequate basis for confirmation theory. This paper deals with one such function, the likelihood function. First, it is argued here that likelihood is not a probability function. Second, a proof is given that, in the limit, likelihood can be used to determine which (...) of two observationally distinct hypotheses is true. Finally, a demonstration is given that, in the presence of a finite amount of experimental information, likelihood can serve as a good estimator of truth. (shrink)
Reasoning almost always occurs in the face of incomplete information. Such reasoning is nonmonotonic in the sense that conclusions drawn may later be withdrawn when additional information is obtained. There is an active literature on the problem of modeling such nonmonotonic reasoning, yet no category of method-let alone a single method-has been broadly accepted as the right approach. This paper introduces a new method, called sweeping presumptions, for modeling nonmonotonic reasoning. The (...) main goal of the paper is to provide an example-driven, nontechnical introduction to the method of sweeping presumptions, and thereby to make it plausible that sweeping presumptions can usefully be applied to the problems of nonmonotonic reasoning. The paper discusses a representative sample of examples that have appeared in the literature on nonmonotonic reasoning, and discusses them from the point of view of sweeping presumptions. (shrink)
Steven French and Décio Krause have written what bids fair to be, for years to come, the definitive philosophical treatment of the problem of the individuality of elementary particles in quantum mechanics and quantum field theory. The book begins with a long and dense argument for the view that elementary particles are most helpfully regarded as non-individuals, and it concludes with an earnest attempt to develop a formal apparatus for describing such non-individual entities better suited to the task than (...) our customary set theory. Along the way one is treated to a compendious philosophical history of quantum statistics and a well-nigh exhaustive (I’m tempted to say, “exhausting”) analytical history of philosophical responses to the quantum theory’s prima facie challenge to classical notions of particle individuality. The book is also a salvo from the headquarters artillery company of the “pro” side in the contemporary structuralism wars, and an essay in metaphysical naturalism. Whew! There are too many places where the friendly critic wants to engage the argument, and few where the authors have not already anticipated such engagement. I take this as my excuse, then, for offering not any systematic response to the whole project, but just some questions and observations about several points that caught my attention. (shrink)
Aspects of an example of simulated shared subjectivity can be used both to support Steven Lehar's remarks on embodied percipients and to triangulate in a novel way the so-called “hard problem” of consciousness which Lehar wishes to “sidestep,” but which, given his other contentions regarding emergent holism, raises questions about whether he has been able or willing to do so.
CAMBRIDGE, Mass. -- What will English be like a hundred years from now? No one has ever observed what happens when a language is used for a century in a global village. Will MTV and CNN infiltrate every yurt and houseboat and drive out all other languages? Will regional accents go extinct, leaving everyone sounding like a Midwestern newscaster? Some language lovers worry that e-mail and chat rooms will influence writing & F2F (face-to-face) lang. & leadd it 2 loose it's (...) grammer spllng etc. :-(. (shrink)
Should a theory of meaning state what sentences mean, and can a Davidsonian theory of meaning in particular do so? Max Ko¨lbel answers both questions affirmatively. I argue, however, that the phenomena of non-homophony, non-truth-conditional aspects of meaning, semantic mood, and context-sensitivity provide prima facie obstacles for extending Davidsonian truth-theories to yield meaning-stating theorems. Assessing some natural moves in reply requires a more fully developed conception of the task of such theories than Ko¨lbel provides. A more developed conception is also (...) required to defend his positive answer to the first question above. I argue that, however Ko¨lbel might elaborate his position, it can’t be by embracing the sort of cognitivist account of Davidsonian semantics to which he sometimes alludes. (shrink)
Steven Pinker's How the mind works (HTMW) marks in my opinion an historic point in the history of humankind's attempt to understand itself. Socrates delivered his "know thyself" imperative rather long ago, and now, finally, in this behemoth of a book, published at the dawn of a new millennium, Pinker steps up to have psychology tell us what we are: computers crafted by evolution - end of story; mystery solved; and the poor philosophers, having never managed to obey Socrates' (...) command, are left alone to wander in the labyrinth of their benighted speculation forever. Unfortunately, though HTMW is to this point the crowning attempt of psychology to make systematic sense of persons by integrating everything relevant science knows, the book fails - and it fails so fundamentally and irremediably that we would do well to wonder anew whether we should supplant the basic view it promotes with what I call the super-mind hypothesis: the view that though mere animals are evolved computers, persons are more. (shrink)
The significance of historical advances in human development has been widely debated within cognitive science. Steven Mithen's recent book, The prehistory of mind (London: Thames & Hudson, 1996), presents an archeologist's attempt to explain the details of cognitive development within the framework of modern anthropology and cognitive psychology. We argue that Mithen's attempt fails for a number of different reasons. The relationship between the archeological evidence he considers and his conclusions is problematic. We maintain that it is difficult to (...) draw biological conclusions from strictly behavioral artifactual evidence. To buttress his claims, Mithen borrows heavily from the very cognitive science literature to which he hopes to contribute. As a consequence, his analysis of the archeological evidence cannot promote a particular cognitive theory, since his interpretation is only as strong as those theories from which he borrows. We are also concerned that the specific details of Mithen's program are equally problematic. Mithen's claim that modular intelligences did not exist outside of hominid evolution is likely false and unwarranted. As a consequence, we argue that the central component of his claim that the uniquely human feature of our development, the move from modular to fluid minds, depends on poorly defined distinctions between a wide range of mental processes. Whether we can accept Mithen's characterization of these claims will depend, we argue, on how he chooses to clarify these terms. We suggest that the various choices will be difficult to reconcile with his theory. Moreover, we suggest that the phenomena that Mithen hopes to explain in human development cannot be explained strictly in terms of analogical reasoning. We nevertheless find Mithen's attempt at answering these questions to be both a constructive and fascinating foray into what is an under-explored topic. (shrink)
A review of Steven Shaviro´s Without Criteria: Kant, Whitehead, Deleuze, and Aesthetics (Cambridge, MA: MIT Press, 2009, xvi + 174 pp. ISBN 978-0-262-19576-8).
Lifelines by Steven Rose is supposed to present a new perspective on biology replacing an emphasis on genes with one on organisms. However, much of the book is a highly biased critique of sociobiology and behavior genetics. Some of the flaws in Rose's description and depiction of these fields are presented and refuted. Also, it would appear that these aspects of the book and many others are, in fact, related more to Rose's perennial concern for the ideology, social origins (...) or social consequences of behavioral biology. These concerns are, I believe based, in part, upon Rose's misunderstandings and misinterpretations of genetics, behavior genetics, and sociobiology. (shrink)
According to Steven Pinker and his associates the cooperative model of human communication fails, because evolutionary biology teaches us that most social relationships, including talk-exchange, involve combinations of cooperation and conflict. In particular, the phenomenon of the strategic speaker who uses indirect speech in order to be able to deny what he meant by a speech act (deniability of conversational implicatures) challenges the model. In reply I point out that interlocutors can aim at understanding each other (cooperation), while being (...) in conflict. Furthermore, Pinker’s strategic speaker relies on the Cooperative Principle when conveying a conversational implicature, and so non-cooperative behaviour (denial) only emerges as a response to a negative reaction from the audience. It is also doubtful in the cases Pinker presents whether a denial will successfully cancel the conversational implicature –change the audience’s interpretation of speaker’s meaning. I also argue that a strategic speaker might choose indirect speech due to the ignorability of conversational implicatures, in which case the strategic speaker can be highly cooperative. (shrink)
According to Steven Pinker and his associates the cooperative model of human communication fails, because evolutionary biology teaches us that most social relationships, including talk-exchange, involve combinations of cooperation and conflict. In particular, the phenomenon of the strategic speaker who uses indirect speech in order to be able to deny what he meant by a speech act (deniability of conversational implicatures) challenges the model. In reply I point out that interlocutors can aim at understanding each other (cooperation), while being (...) in conflict. Furthermore, Pinker’s strategic speaker relies on the Cooperative Principle when conveying a conversational implicature, and so non-cooperative behaviour (denial) only emerges as a response to a negative reaction from the audience. It is also doubtful in the cases Pinker presents whether a denial will successfully cancel the conversational implicature –change the audience’s interpretation of speaker’s meaning. I also argue that a strategic speaker might choose indirect speech due to the ignorability of conversational implicatures, in which case the strategic speaker can be highly cooperative. (shrink)
Steven Hales constructs a novel argument against the possibility of presentist time travel called the suicide machine argument. Hales argues that if presentism were true, then time travel would result in the annihilation of the time traveler. But such a consequence is not time travel, therefore presentism cannot allow for the possibility of time travel. This paper argues that in order for the suicide machine argument to succeed, it must make (at least) one of two assumptions, each of which (...) beg the question. The argument must either assume that the sequence of moments is invariant, or that time travel requires distinct, co-instantiated moments. Because the former disjunct assumes that presentist time travel is impossible and the latter assumes that presentism is impossible, the suicide machine argument fails. (shrink)
