This is such a good book, I wish it were better. In particular, I wish that the authors had not spent so much time discussing the effects of informational and symbolic transmission on evolution (most of which is fairly obvious) and spent more time on the fascinating topics of epigentic transmission and genetic control systems, which are extremely complex and difficult issues, and go by too fast.
The authors pose a question that evolutionary scholar rarely broach: If evolution produces and preserves adaptive traits, why does it not produce the trait that is the most adaptive of all -- the ability to directly transmit acquired adaptive characteristics to offspring? Ironically, despite their qualified claim that organisims do have such an ability, the authors provide an excellent Darwinian reason why this trait is so limited -- because a species which possesses it (like, say, humans) is so likely to "crash and burn" if it mistakenly adopts a trait which turns out to be maladaptive.
Jablonski and her co-author are neo-Lamarkians; that is, they believe (or want to believe) in the inheritance of acquired characterists. Lamarkism is deeply distrusted by evolutionary biologists for two very good reasons: there is not much evidence for it, and a mechanism for transmitting acquired characteristics seems biochemically impossible. The authors present some good arguments why this might not be so. Particulary impressive is their discussion of epigenetics -- biochemical processess not involving genes which nonethelesss affect an organism's development. Epigenetic processes pretty clearly can be affected by environmental factors, and so environmental factors do have a direct impact on bodily devlopment, and hence evolution. More relevantly, epigentic developments can apparently be directly incorporated into the organism's germ line (the system which involves reproduction), and hence heredity, without the necessity of mutation. This issue is deep and difficult probably deserved a whole book of its own.
The writing is clear and the illustrations are helpful, if a bit "cute." This book is a wonderful introduction to a problematical subject. Persons who are suspicious of classical Darwinism, but suspect that intelligent design theory is nonsense will love this book.
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- Amazon CustomerReviewed in Germany on June 24, 2017
There is always another way to look at things
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- Lifelong learning freelancerReviewed in the United Kingdom on January 31, 2018
Five Stars
