Explained here in a cartoon. (Except it was all intended to be taken seriously.)
= the idea of beauty is merely a ruse for getting sex.
Also in what sounds like an unreadable book, Literary Darwinism :
In Literary Darwinism, Carroll presents a comprehensive survey of this new movement with a collection of his most important previously published work, along with three new essays. The essays and reviews give commentary on all the major contributors to the field, situate the field as a whole in relation to historical trends and contemporary schools, provide Darwinist readings of major literary texts such as Pride and Prejudice and Tess of the d’Urbervilles, and analyze literary Darwinism in relation to the affiliated fields of evolutionary metaphysics, cognitive rhetoric, and ecocriticism. Collecting the essays in a single volume will provide a central point of reference for scholars interested in consulting what the “foremost practicioner” (New York Times) of Darwinian literary criticism has to say about his field.
Better stay with the ‘toon.