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68 of 75 people found the following review helpful:
5.0 out of 5 stars
Clear, correct, & important constraints on evolution, February 27, 2000
I thoroughly enjoyed it. This aptly titled book is indeed on the mathematics of evolution. Hard hitting material that places constraints on evolutionary arguments. First, it is explicit, it takes nothing for granted. Every (or virtually every) assumption, model, and math step is explained. He explains it clearly and completely, rather than just stating his say-so as so many other evolution books do. Based on the text, I was able to re-derive virtually all its math and verify that it is based on his stated models and assumptions. The math techniques are especially valuable for researchers in this field. He gives the clearest explanation of the use of diffusion equations I have found anywhere. Kimura, for example, throws diffusion equations around a lot, but does not explain them nearly as clearly, even in his detailed published papers, which I have read. Also, Hoyle deals with some highly relevant issues, which other evolution books tend not to do. Evolution books ordinarily try to sell evolution to the public, and to accomplish that they tend to under-discuss the touchy issues. Hoyle's book goes after the touchy central issues unflinchingly. I wish more evolution books were like it. For example, the cost of harmful mutation, and issues like error catastrophe, are almost always avoided or under-discussed in evolutionary genetics books - they assume away this issue, often without even acknowledging it. But it is a key issue and ought be a regular participant in evolutionary discussions. Hoyle approaches it boldly as a centerpiece of his book. Bravo! Armed with a clear mathematical analysis, Hoyle enters the contentious issue of sexual reproduction, to argue, with compelling strength, that asexual populations have difficulty evolving because they are overwhelmed by harmful mutation. Sexual reproduction provides a way to more readily shed harmful mutations. This argument elsewhere goes by the name of Muller's Ratchet, but Hoyle gives it clear, mathematical armament. Maynard-Smith (in his Feb. 10 review in Nature) had to press to the very fringes of the book to find much to disagree with. This is noteworthy because he is a leading expert on these very issues of sexual reproduction and the cost of harmful mutation. His review instead faulted the book for not being "new". He missed the point: The book is good because it is clear, correct, and important - more-so than comparable evolution books. Hoyle discusses his mathematical results in readily understandable terms. The book has many juicy statements that are sure to be quoted in the origins debate. The book's posture is doubtful of Darwinian macroevolution, and for this reason I suspect the book might not be read widely (or promoted) by avid Darwinians. That is unfortunate, because the book has so much to offer, no matter which side of the origins debate one is on. On the flip-side, Hoyle is mistaken about Haldane's Dilemma. I can (and will in future publications) explain in detail just where his errors occur (there are several, as he takes several lines of argument on this issue - which I admire). Maynard-Smith's review, to his credit, acknowledges that Hoyle's dismissal of this famous evolutionary problem is unconvincing. This is not a serious failing of Hoyle's book however, as the mistakes he made are not uncommon, and there is much confusion about this issue, even in Haldane's original papers. So, I do not fault Hoyle badly on this point. Hoyle's book touches on eugenics some (which may perhaps raise eyebrows). The book also briefly ties in with his ideas of panspermia. Yet I do not find it improper for him to include such discussion. I would merely say the strength of the book lay in the material I mentioned earlier.
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