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The Handicap Principle: A Missing Piece of Darwin's Puzzle First Edition
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The wide-ranging implications of the Zahavis' new theory make it arguably the most important advance in animal behavior in decades. Based on 20 years of painstaking observation, the Handicap Principle illuminates an astonishing variety of signaling behaviors in animals ranging from ants and ameba to peacocks and gazelles. Essentially, the theory asserts that for animal signals to be effective they must be reliable, and to be reliable they must impose a cost, or handicap, on the signaler. When a gazelle sights a wolf, for instance, and jumps high into the air several times before fleeing, it is signaling, in a reliable way, that it is in tip-top condition, easily able to outrun the wolf. (A human parallel occurs in children's games of tag, where faster children will often taunt their pursuer before running). By momentarily handicapping itself--expending precious time and energy in this display--the gazelle underscores the truthfulness of its signal. Such signaling, the authors suggest, serves the interests of both predator and prey, sparing each the exhaustion of a pointless chase. Similarly, the enormous cost a peacock incurs by carrying its elaborate and weighty tail-feathers, which interfere with food gathering, reliably communicates its value as a mate able to provide for its offspring. Perhaps the book's most important application of the Handicap Principle is to the evolutionary enigma of animal altruism. The authors convincingly demonstrate that when an animal acts altruistically, it handicaps itself--assumes a risk or endures a sacrifice--not primarily to benefit its kin or social group but to increase its own prestige within the group and thus signal its status as a partner or rival. Finally, the Zahavis' show how many forms of non-verbal communication among humans can also be explained by the Handicap Principle. Indeed, the authors suggest that non-verbal signals--tones of voice, facial expressions, body postures--are quite often more reliable indicators of our intentions than is language.
Elegantly written, exhaustively researched, and consistently enlivened by equal measures of insight and example, The Handicap Principle illuminates virtually every kind of animal communication. It not only allows us to hear what animals are saying to each other--and to understand why they are saying it--but also to see the enormously important role non-verbal behavior plays in human communication.
- ISBN-100195100352
- ISBN-13978-0195100358
- EditionFirst Edition
- PublisherOxford University Press
- Publication dateAugust 7, 1997
- LanguageEnglish
- Dimensions6.5 x 1.25 x 9.5 inches
- Print length304 pages
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Copyright 1997 Reed Business Information, Inc.
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- Publisher : Oxford University Press; First Edition (August 7, 1997)
- Language : English
- Hardcover : 304 pages
- ISBN-10 : 0195100352
- ISBN-13 : 978-0195100358
- Item Weight : 1.3 pounds
- Dimensions : 6.5 x 1.25 x 9.5 inches
- Best Sellers Rank: #186,110 in Books (See Top 100 in Books)
- #4 in Zoology (Books)
- #26 in Developmental Biology (Books)
- #57 in Biology (Books)
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Genetic Entropy is a problem. Quantum-consciousness only needs an infinitesimal amount of force to tweak things, by analogy to the force required to deflect an asteroid from a collision with earth, if your application of force is COHERENT you don't need a lot of force. So quantum-consciousness can fight Genetic Entropy, but only to a certain degree. What you need, is a MECHANISM to fight Genetic Entropy - how about Sexual Selection ?
Even Dawkins says that Sexual Selection is underrated, I think I saw that in an interview he did with David Attenborough. But what if Sexual Selection were DESIGNED by the peacock-spirit to fight Genetic Entropy, not so that evolution can move forward, that's way too difficult, but merely to avoid backsliding.
The Handicap Principle thus is about signals, signals between prey and predator, between one sex and the other, and between the individual and the group. The purpose of these signals is to display in an unequivocal way the fitness of the signaler. Note that such signals have to be "fake proof." They have to be what the authors call "reliable." An animal that can't run fast and has limited resources of energy can't waste them jumping in the air. It needs to get going immediately or to stay hidden if it is to have any chance of survival. A man leads with his chin. That's a signal that he's confident. When men had beards it was a little dangerous to stick your chin out since the other guy might grab your beard and you could be in trouble. People demonstrate wealth by wasting money. This is a "reliable" (if ugly) signal because without an ample supply of money, you can't afford to waste it.
Part of the beauty of this book comes from the personality of the authors, who spent a large part of their lives studying little babbler birds in Israel. I feel I know these little social birds just from the loving descriptions in the text. One can see that even though the Zahavis made their discovery of the handicap principle in 1975 and waited almost two decades before it was generally accepted in the scientific community, they harbor no bitterness, nor is their tone at all gloating. They come across as hard-working field scientists who love their work and nature.
Besides being full of exciting and original ideas, The Handicap Principle is also extremely well written. Each sentence is clear and to the point without the burden of unnecessary jargon or the wordy clumsiness sometimes found in such books. Amotz and Avishag Zahavi took great pride in effectively communicating their ideas to a wide audience. Additionally there are scores of exquisite, loving little black and white drawings by illustrator Amir Balaban of animals, birds, insects and people, etc., illuminating the text.
If you're interested in evolutionary theory, this is a book not to be missed. As Jared Diamond says on the cover, "Read this fine book, and discover what the excitement is all about."
--Dennis Littrell, author of "Understanding Evolution and Ourselves"
Honestly, it is surprising how few reviews are on this title, given how well it was written. If you are reading through the reviews you will notice one reader gave it 2 stars for a concern over a possible failure to concatenate Zhavi's theories with that of reciprocal altruism. With no disrespect to that reviewer or anyone else who may find disfavor in this book, I would argue that there is so much quality information and poise in writing this book; it is hard to give it any less than four stars. The Handicap Principle can be appreciated by career scientist in the biological field and laymen alike. The information in this book gives many strong examples supporting the author's premise of evolutionary themes, risky behaviors by animals, social hierarchy in birds, and the development of specific physical qualities of animals that serve a pragmatic purpose.
Even if you are not an avid reader of animal behavior this book has a lot to offer in terms of what it means for humans socially. At the least, the book is written clearly and will provide some educational entertainment. The author does not write as provocative as some other evolutionary biologist such as Dawkins, which is good for those who have trouble reading works that may conflict with their belief system. From the perspective of seeking general information regarding the themes discussed in this book and wanting to read some informative examples showcasing those themes I have to give this book 5 out of 5 stars.
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