Online research in philosophy

The explanatory role of natural selection is one of the long-term debates in evolutionary biology. Nevertheless, the consensus has been slippery because conceptual confusions and the absence of a unified, formal causal model that integrates different explanatory scopes of natural selection. In this study we attempt to examine two questions: (i) What can the theory of natural selection explain? and (ii) Is there a causal or explanatory model that integrates all natural selection explananda? For the first question, we argue that (...) five explananda have been assigned to the theory of natural selection and that four of them may be actually considered explananda of natural selection. For the second question, we claim that a probabilistic conception of causality and the statistical relevance concept of explanation are both good models for understanding the explanatory role of natural selection. We review the biological and philosophical disputes about the explanatory role of natural selection and formalize some explananda in probabilistic terms using classical results from population genetics. Most of these explananda have been discussed in philosophical terms but some of them have been mixed up and confused. We analyze and set the limits of these problems. (shrink)

I disagree with several of Chow's traditional descriptions and justifications of null hypothesis testing: (1) accepting the null hypothesis whenever p > .05; (2) random sampling from a population; (3) the frequentist interpretation of probability; (4) having the null hypothesis generate both a probability distribution and a complement of the desired conclusion; (5) assuming that researchers must fix their sample size before performing their study.

The research team measured the enterprise web accessibility levels of the Forbes 250 largest enterprises using the fully automatic accessibility evaluation tool Sortsite, and presented the compliance of the evaluated websites to WCAG 1.0, WCAG 2.0 and Section 508 accessibility levels. Given the recent attention to organizational leaders having ethical duties towards their dedicated employees, we propose that ‘societal citizenship behaviour’ concerns ethical duties of organizational leaders towards society in general and in particular to those who have less means to (...) assert their needs. In effect, we found enterprise website accessibility levels to be in need of significant improvement. An interpretation of a positive path forward to better enterprise website accessibility levels is put forth based on a focus-group interaction and using BNML—a novel Business Narrative Modelling Language. (shrink)

Many studies have attempted to assess the relative effects of different vectors of a disease on animal populations. To this end, three measures have been proposed: Vectorial efficiency, Vectorial capacity and recently Vectorial effectiveness (or Vectorial impact). In this study we relate these measures to derive some of their properties emphasising in the vectorial impact for its importance in both, population performance of parasites and the proportion of the prevalence of one parasite due to a given vector. We applied the (...) quantitative expressions advanced in this study to a simple Chilean example with one parasite (Trypanosoma cruzi), two vectors (Triatoma infestans and Mepraia spinolai) and one animal population (humans: Chagas's disease). (shrink)

Bayesians take “definite” or “single-case” probabilities to be basic. Definite probabilities attach to closed formulas or propositions. We write them here using small caps: PROB(P) and PROB(P/Q). Most objective probability theories begin instead with “indefinite” or “general” probabilities (sometimes called “statistical probabilities”). Indefinite probabilities attach to open formulas or propositions. We write indefinite probabilities using lower case “prob” and free variables: prob(Bx/Ax). The indefinite probability of an A being a B is not about any particular A, but rather about the (...) property of being an A. In this respect, its logical form is the same as that of relative frequencies. For instance, we might talk about the probability of a human baby being female. That probability is about human babies in general — not about individuals. If we examine a baby and determine conclusively that she is female, then the definite probability of her being female is 1, but that does not alter the indefinite probability of human babies in general being female. Most objective approaches to probability tie probabilities to relative frequencies in some way, and the resulting probabilities have the same logical form as the relative frequencies. That is, they are indefinite probabilities. The simplest theories identify indefinite probabilities with relative frequencies.3 It is often objected that such “finite frequency theories” are inadequate because our probability judgments often diverge from relative frequencies. For example, we can talk about a coin being fair (and so the indefinite probability of a flip landing heads is 0.5) even when it is flipped only once and then destroyed (in which case the relative frequency is either 1 or 0). For understanding such indefinite probabilities, it has been suggested that we need a notion of probability that talks about possible instances of properties as well as actual instances.. (shrink)

Lakatos, I. History of science and its rational reconstructions.--Clark, P. Atomism vs. thermodynamics.--Worrall, J. Thomas Young and the "rufutation" of Newtonian optics.--Musgrave, A. Why did oxygen supplant phlogiston?--Zahar, E. Why did Einstein's programme supersede Lorentz's?--Frické, M. The rejection of Avogadro's hypotheses.--Feyerabend, P. On the critique of scientific reason.

ABSTRACT: Quassim Cassam (1997) accepts the standard account of solidity, according to which, if S feels x as solid, then S feels x as an imediment to his movement. Recently, Martin Fricke and Paul Snowdon (2003) have presented a battery of counter-examples designed to show that S may feel x as solid and as exerting a pressure that supports or facilitates his movement. In this note, I defend the standard account against Fricke and Snowdon’s attack. Integral to this defense is (...) a distinction between two (sometimes overlapping) ways in which S may feel x as an impediment to his movement: as an influence on a movement state of S, or as an obstacle to the achievement of a goal that requires movement. After demonstrating the primacy of the former sense, I argue that Fricke and Snowdon’s counter-examples only undermine a version of the standard account that glosses ‘impediment’ as an obstacle to the achievement of a goal that requires movement. (shrink)

Parfit's Mere Addition Paradox seems to show that we must give up one of three very plausible beliefs about the relative goodness of certain outcomes, which would put a strong damper on our hopes of finding an acceptable theory of benevolence dealing with issues of procreation. I shall argue that such a result can be avoided if we challenge some basic assumptions about moral reasoning which underlie Parfit's argument. An alternative account of the nature of moral reasoning will be given, (...) and a non-standard version of Utilitarianism capable of solving the Paradox will be developed and defended. (shrink)

Edited book containing the following essays: 1 Getting over Gettier, Alan Musgrave.- 2 Justified Believing: Avoiding the Paradox Gregory W. Dawes.- Chapter 3! Literature and Truthfulness,Gregory Currie.- 4 Where the Buck-passing Stops, Andrew Moore.- 5 Universal Darwinism: Its Scope and Limits, James Maclaurin, - 6 The Future of Utilitarianism,Tim Mulgan. 7 Kant on Experiment, Alberto Vanzo.- 8 Did Newton ʻFeignʼ the Corpuscular Hypothesis? Kirsten Walsh.- 9 The Progress of Scotland: The Edinburgh Philosophical Societies and the Experimental Method, Juan Gomez.- 10 (...) Propositions: Truth vs. Existence, Heather Dyke.- 11 Against Advanced Modalizing, Josh Parsons.- 12 Spread Worlds, Plenitude and Modal Realism: A Problem for DavidLewis, Charles R. Pigden and Rebecca E. B. Entwisle.- 13 Defending Quine on Ontological Commitment. 14. The Scandal of Platonism, Vladimír Svoboda.- 15 A Neglected Reply to Prior's Dilemma J. C. Beall. 16 Mathematical and Empirical Concepts, Pavel Materna.- 17 Post-Fregean Thoughts on Propositional Unity, Bjørn Jespersen.- 18 Best-path Theorem Proving: Compiling Derivations, Martin Frické.- 19 Is Imperative Inference Impossible?, Hannah Clark-Younger. ​. (shrink)

with the OSCAR seminar: Adam Arico, Nathan Ballantyne, Matt Bedke, Jacob Caton, Ian Evans, Don Fallis, Brian Fiala, Martin Frické, David Glick, Peter Gross, Terry Horgan, Jenann Ismael, Daniel Sanderman, Paul Thorn, Orlin Vakarelov, Analysis, forthcoming.

Hyperproof is one of the first systems to permit and encourage reasoning across heterogeneous media. Its advocates argue that it has merits over and above the obvious pragmatic and cognitive ones. This paper suggests analysing Hyperproof-like systems in terms of languages interpreted over a common conceptual scheme and translation relations between logical expressions in such languages. This analysis shows that, despite initial appearances, Hyperproof has no real theoretical merits apart from its admittedly important pragmatic advantages.

Kants Theorie des reinen Geschmacksurteils By Christel Fricke Verlag Walter de Gruyter, 1990 (Quellen und Studien zur Philosophie, 26). Pp. 196. ISBN 3?11?012585?4. DM98.00 The Ontology of Physical Objects By Mark Heller Cambridge University Press, 1990. Pp. iv + 162. ISBN 0?521?38544?X. £25.00. Theory of Knowledge By Keith Lehrer Routledge, 1990. Pp. xii + 212. ISBN 0?415?05407?9. £30.00 hbk. £9.99 pbk. Disciplining Foucault: Feminism, Power and the Body By Jana Sawicki Routledge, 1991. Pp. xii + 130. ISBN 0?415?90187?1. £30.00 hbk. (...) £8.99 pbk. (shrink)

ABSTRACT: Quassim Cassam (1997) accepts the standard account of solidity, according to which, if S feels x as solid, then S feels x as an imediment to his movement. Recently, Martin Fricke and Paul Snowdon (2003) have presented a battery of counter-examples designed to show that S may feel x as solid and as exerting a pressure that supports or facilitates his movement. In this note, I defend the standard account against Fricke and Snowdon’s attack. Integral to this defense is (...) a distinction between two (sometimes overlapping) ways in which S may feel x as an impediment to his movement: as an influence on a movement state of S, or as an obstacle to the achievement of a goal that requires movement. After demonstrating the primacy of the former sense, I argue that Fricke and Snowdon’s counter-examples only undermine a version of the standard account that glosses ‘impediment’ as an obstacle to the achievement of a goal that requires movement. (shrink)