Several paleontologists have recently challenged the explanatory adequacy of the modern synthetic theory of evolution. Their position is that, contrary to the prevailing view that evolutionary change is gradual, the fossil record manifests long periods of species stasis punctuated by periods of rapid species formation. And, they argue, this punctuated equilibria pattern challenges the gradualist, adaptationist and extrapolationist assumptions of the modern synthetic theory of evolution and supports a hierarchical, non-extrapolationist view of evolution. In this paper I argue that the (...) challenge rests on an inadequate characterization of the modern synthetic theory and that, even accepting punctuated equilibria and an irreducible evolutionary hierarchy, the modern synthetic theory is adequate to explain evolutionary change at all levels of the hierarchy. (shrink)

The development of modern evolutionary ethics began shortly after the publication of Charles Darwin's On the Origin of Species by Natural Selection. Early discussions were plagued by several problems. First, evolutionary ethical explanations were dependent on group‐selection accounts of social behavior (especially the explanation of altruism). Second, they seem to violate the philosophical principle that “ought” statements cannot be derived from “is” statements alone (values cannot be derivedfrom facts alone). Third, evolutionary ethics appeared to be biologically deterministic, deemed incompatible with (...) the free will required for ethics to be possible. Fourth, social policies based on evolutionary theory (for example, eugenics in the early part of this century) seemed patently unethical. Sociobiology (which coalesced as a field of study with Edward O. Wilson's Sociobiology: The New Synthesis, 1975) addressed several of these problems and provided a rich framework and a new impetus for evolutionary ethics. The lingering problems were the philosophical is‐ought barrier and biological determinism. After tracing the early and more recent development of evolutionary ethics, I argue that the remaining problems can be surmounted and an incipient evolutionary ethics can be defended. Thoroughgoing evolutionaryethics must await theoretical developments in neurobiology and cognitive science. (shrink)

Codes of conduct are a conspicuous feature of modern business organization, but doubts have been raised regarding their efficacy in ensuring high standards of behavior. Although some of the issues involved have been discussed at some length in the business ethics literature, the amount of systematic empirical evidence on the impact of codes is very limited. This paper seeks to make a contribution to that body of knowledge by studying the policies and procedures of a sample of banks which have (...) signed a statement on banking and the environment promulgated by the United Nations Development Programme. Although some differences are found when compared with a sample of banks which did not sign the Statement, they are not extensive. The implications of the findings, for codes of conduct and for future empirical studies, are then discussed. (shrink)

It is frequently argued that home birth is morally irresponsible because it involves the taking of risks on behalf of the fetus. Against this position, I argue three things. First, the fact that home birth involves risks does not necessarily entail that choosing or attending one is morally unacceptable, irresponsible or wrong. Second, parents have a prima facia prerogative to decide on behalf of their fetuses and children whether risks should be taken. While this prima facia prerogative can be overridden, (...) reasonable and widely accepted criteria for doing so are not met in the case of home birth. Third, since the current attitudes and behaviours of physicians with regard to home birth constitute a de facto morally and socially unjustifiable overriding of an informed parental decision, physician autonomy should be restricted so as to preserve the autonomy of the medical consumer. (shrink)

Several important analyses of the structure of evolutionary explanation have explicitly or implicitly required that historical laws be among the explanans statements. The required historical laws take the form of a generalization which relates some property or event to a developmental sequence of properties or events. The thesis of this paper is that historical laws of this kind are precluded by modern biological theory and, hence, analysis of evolutionary explanation within modern biology that require such laws are defective.

Although mathematical descriptions of the dynamics of system are widely employed in the physical sciences, they are employed infrequently in the biological sciences. The explanation for this usually appeals to the complexity of biological systems. I contend that quite the opposite is true and that such descriptions, in fact, enable complexity to be tamed. Moreover, in those areas in which mathematical descriptions have been used in the biological sciences, they provide a powerful vehicle for expanding our understanding of the systems (...) through an exploration of the mathematical models. Such investigations yield surprising information about the dynamics of the system some of which cannot be discovered through empirical investigation alone. (shrink)

Benton Stidd has defended the position that punctuationists are not wrong about the inadequacy of the synthetic theory of evolution for explaining evolution. The thrust of his defense is that arguments to the contrary by Thompson involve a rational reconstruction along logical empiricist lines, which is insensitive to historical and social forces in a way that the Kuhnian Weltanschauung view that he espouses is not. I argue in this paper that Stidd has entirely misunderstood my arguments, that the soundness of (...) my arguments does not depend on acceptance of logical empiricism , and that Stidd fails to establish that punctuated equilibria is a new "paradigm". (shrink)