Michael Ruse

Methodological naturalism is the assumption or working hypothesis that understanding nature (the physical world including humans and their thoughts and actions) can be understood in terms of unguided laws. There is no need to Suppose interventions (miracles) from outside. It does not commit one to metaphysical naturalism, the belief that there is nothing other than nature as we can see and observe it (in other words, that atheism is the right theology for the sound thinker). Recently the Intelligent Design movement has been arguing against methodological naturalism, and in this project they have been joined by the Christian philosopher Alvin Plantinga. In this paper I examine Plantinga’s arguments and conclude not only that they are not well taken, but that he does no good service to his religion either

I agree with George Williams's most significant point: both questions and answers about our moral natures lie in our biological origins. He fails, however, to show that nature is morally evil and that therefore we should vigilantly resist it. The products of evolution are morally neutral, but the human moral sense is arguably a positive good. Morality is functional. It does not require ultimate justification in the sense of correspondence with or attack upon reality “out there.” It is an adaptation “intended” to make us social, and sociality—with its sense of right and wrong—makes us fitter than otherwise.

Does modern evolutionary theory (specifically Darwinism) pose a problem for the Christian's thinking about morality? It certainly poses threats for those who would argue that certain practices are wrong because they are “unnatural.” Liberal Christians can probably get around these questions. But at a deeper level, despite superficial similarities between its conclusions and the Love Commandment, Darwinism points to an essential relativism about morality, thereby striking at the very core of all Christian thought on moral behavior. Thus, those who are worried about the clash between science and religion have good reasons for their worries.

The question of the levels at which natural selection can be said to operate is much discussed by biologists today and is a key factor in the recent controversy about sociobiology. It is shown that this problem is one to which Charles Darwin addressed himself at some length. It is argued that apart from some slight equivocation over man, Darwin opted firmly for hypotheses supposing selection always to work at the level of the individual rather than the group. However, natural selection's co-discoverer, Alfred Russel Wallace, endorsed group selection hypotheses

The homologies of process within morphogenetic fields provide some of the best evidence for evolution—just as skeletal and organ homologies did earlier. Thus, the evidence for evolution is better than ever. The role of natural selection in evolution, how–ever, is seen to play less an important role. It is merely a filter for unsuccessful morphologies generated by development. Population genetics is destined to change if it is not to become as irrelevant to evolution as Newtonian mechanics is to contempo–rary physics.

My book, "The Darwinian Revolution" gives an overview of the revolution as understood at the time of its writing (1979). It shows that many factors were involved, from straight science through philosophical methodology, and on to religious influences and challenges. Also of importance were social factors, not the least of which was the professionalization of science in Britain in the 19th century. Since the appearance of that book, new, significant factors have become apparent, and here I discuss some of the most important -- especially the way in which evolution as an idea came into being as an epiphenomenon of the ideology of cultural progress; the (often tense) interaction between ideas of biological progress and the urge to professionalization, and of how this led to a delay in the full appreciation of what Charles Darwin had done in the "Origin;" and the ongoing divide between biological functionalists and biological formalists, a Kuhnian-type paradigm difference that persists across the Darwinian revolution.