
Richard Dawkins. The Greatest Show On Earth. (2009) Most of Dawkins’s work has been the attempt to convince people that Creation Science, aka Intelligent Design, is wrong. This book is his marshalling of the evidence that evolution is real, and that we have increasing knowledge and understanding of how it happens. The basic principle is random variation constrained by deterministic laws of physics, chemistry, and biology. It’s because most mutations do not improve the organism’s chances of surviving long enough to breed, or to outbreed siblings and cousins, that the few favourable mutations not only gain a foothold but spread. IOW, while mutations are random, their effects are not, and that is enough to guarantee that most beneficial mutations will usually spread while deleterious ones will not (if they haven’t killed their hosts). One consequence is that the best versions of essential genes are conserved across species. The preservation and spread of favourable genotypes is what “natural selection” actually means.A well done book, which in the end is the best refutation to the pseudoscience peddled by the creationists. Recommended. ****
Footnote: It seems to me that one of the motivations for Creationism is a misreading of the Bible. The assumption seems to be that the factual truth is primary. Or Fundamental. Or even the Only Truth. Therefore there is only one legitimate method of interpreting the biblical texts, namely to assume its factual truth. From this point of view, only factual truth can guarantee the truth of whatever moral or theological or other propositions the reader wishes to assert.
But the assumption that factual truth proves moral, theological, and other abstract truths has a fundamental problem for the believer: By making factual truth primary, religious truths are logically contingent. That means that any changes in factual truths may change religious truths. At some level, fundamentalists seem to understand this, hence their insistence that the factual truths they read into the biblical narratives cannot be contradicted. It also means they must find ways of proving the truth of the facts as stated in the Bible.