In Phylogenetic Systematics (1966), Willi Hennig conflates the Linnaean hierarchy with what Hennig refers to as the divisional hierarchy. In doing so, he lays the foundations of that school of biological taxonomy known as cladism on a philosophically ambiguous basis. This paper compares and contrasts the two hierarchies and demonstrates that Hennig conflates them. It shows that Hennig's followers also conflate them. Finally, it illuminates five persistent problems in cladism by suggesting that they arise from Hennig's original confusion.

Initiated by Robert Wesson, _Evolution and Human Values_ is a collection of newly written essays designed to bring interdisciplinary insight to that area of thought where human evolution intersects with human values. The disciplines brought to bear on the subject are diverse - philosophy, psychiatry, behavioral science, biology, anthropology, psychology, biochemistry, and sociology. Yet, as organized by co-editor Patricia A. Williams, the volume falls coherently into three related sections. Entitled Evolutionary Ethics, the first section brings contemporary research to an area (...) first explored by Herbert Spencer. Evolutionary ethics looks to the theory of evolution by natural selection to find values for human living. The second section, Evolved Ethics, discusses the evolution of language and religion and their impact on moral thought and feeling. Evolved ethics was partly Charles Darwin's subject in _The Descent of Man._ The last section bears the title Scientific Ethics. A nascent field, scientific ethics asks about the evolution of human nature and the implications of that nature for ethical theory and social policy. Together, the essays collected here provide important contemporary insights into what it is - and what it may be - to be human. (shrink)

Evolutionary ethics posits the evolution of dispositions to love self, kin, and friend. Christianity claims that God's ethical demand is to love one's neighbor. I argue that the distance between these two positions can be interpreted theologically as original sin, the disposition to disobey God's command and practice self-love and nepotism rather than neighbor-love. Original sin requires Incarnation and Atonement to unite God and humanity. The ancient doctrine of the Atonement as educative does not invoke the Fall. Its revival may (...) help reconcile Christianity and evolutionary ethics. (shrink)

This essay views Christian doctrines of the atonement in the light of evolution and sociobiology. It argues that most of the doctrines are false because they use a false premise, the historicity of Adam and the Fall. However, two doctrines are not false on those grounds: Abelard’s idea that Jesus’ life is an example and Athanasius’s concept that the atonement changes human nature. Employing evolution’s and sociobiology’s concepts of the egocentric and ethnocentric nature of humanity and the synergy between genes (...) and environments to produce a "nature," this essay shows that these two doctrines can be amalgamated to make sense of the atonement in the late twentieth century. (shrink)

This paper argues that the creation narrative of the Fall in Genesis 2:4b–3:24 is not history and does not contain a doctrine of original sin. The doctrine of original sin as a theory of human nature needs a new foundation. The contemporary science of sociobiology has a theory of human nature that is remarkably similar to major versions of the Christian doctrines of original sin. To incorporate sociobiology's theory of human nature into Christianity is to lay the foundation for a (...) new, ecumenical understanding of original sin. (shrink)

In this essay, I attempt to solve the problem of the existence of evil in a world created by an omniscient, omnibenevolent, omnipotent God. I conclude that evil exists because God wanted to create moral creatures. Because choice is necessary for morality, God created creatures with enormous capacities for choice—and therefore enormous capacities for evil. Material creatures are subject to pain and death because, for such creatures, moral choices are deeply serious. The laws that underlie the material world and from (...) which material life arises are such that, from their workings out on a planet that can support life, natural evils happen. (shrink)