By John Maynard-Smith, David Harper

Why are animal signs trustworthy? this can be the crucial challenge for evolutionary biologists attracted to signs. after all, now not all indications are trustworthy; yet so much are, another way receivers of indications could forget about them. a couple of theoretical solutions were proposed and empirical reviews made, yet there nonetheless continues to be a large amount of confusion. The authors, one a theoretician the opposite a fieldworker, introduce a feeling of order to this chaos. an important explanation for confusion has been the tendency for various researchers to exploit both an analogous time period with varied meanings, or varied phrases with a similar that means. The authors try and make clear those changes. A moment reason for confusion has arisen simply because many biologists proceed to imagine that there's just one right reason behind sign reliability. The authors argue that the reliability of indications is maintained in numerous methods, proper in numerous conditions, and that biologists needs to learn how to distinguish among them. during this ebook they clarify the several theories, supply examples of signalling platforms to which one or one other concept applies, and element to the various components the place extra paintings, either theoretical and empirical, is needed.

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