 However, another way to understand how the behavioral ecologists are using optimality models, one that is not so often considered, is that they are interested in providing a functional description of the traits they are studying (Kitcher, 1987; see also Bolduc and Cezilly, 2012, for a similar view in terms of decision patterns rather than behavioral strategies). One of the things that may concern a behavioral ecologist is how exactly to describe the nature of the behavior that they are considering: what component behavioral dispositions (from among all of the organism’s behavior) make up each strategy, and how those dispositions hang together as an adaptation. They need to give a description of the relationship between the organism’s behavior and its environment, and how it contributes to the organism’s fitness. In the jewel wasp case, the behavioral ecologists have observed the wasps lay different egg sex ratios on different occasions. The question is how to make sense of these different sex-ratio laying behaviors: the guess is that these different behaviors hang together somehow, as manifestations of a particular egg-sex-ratio adjusting strategy; and that having this particular strategy, this particular pattern of egg-sex-ratio laying behavior, does something for the female wasp when considered as a whole. But why should a behavioral ecologist accept that any particular such a functional description is true?