By John Maynard-Smith

Why are animal indications trustworthy? this is often the primary challenge for evolutionary biologists drawn to signs. in fact, no longer all signs are trustworthy; yet so much are, in a different way receivers of signs could forget about them. a couple of theoretical solutions were proposed and empirical experiences 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 reason for confusion has been the tendency for various researchers to exploit both an identical time period with assorted meanings, or various phrases with a similar that means. The authors try to make clear those transformations. 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 signs is maintained in numerous methods, appropriate in several conditions, and that biologists needs to discover ways to distinguish among them. during this e-book they clarify the various theories, supply examples of signalling structures to which one or one other concept applies, and element to the numerous components the place extra paintings, either theoretical and empirical, is required.

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