sexualselection

The bright elastic throats of anole lizards, the Fabergé abdomens of peacock spiders and the curling, iridescent and ludicrously long feathers of birds-of-paradise. A number of animal species possess beautifully conspicuous and physically burdensome features.

Many biologists have long fit these tasking aesthetic displays into a more utilitarian view of evolution. However, a new generation of biologists have revived a long-ignored theory — that aesthetics and survival do not necessarily need to be linked and that animals can appreciate beauty for its own sake.

Today on The Sunday Read, a look at how these biologists are rewriting the standard explanation of how beauty evolves and the way we think about evolution itself. 

This story was written by Ferris Jabr and recorded by Audm. To hear more audio stories from publishers like The New York Times, download Audm for iPhone or Android.

In this lecture, Professor Peterson discusses uncertainty or anomaly. We frame the world -- or the world reveals itself to us -- as a story, with a starting point, a destination, and the behavioral means to move from one to the other. The destination is valued more highly than the starting point, and constitutes the point of the story -- the aim of the individual. Reality manifests itself within that story as what is relevant for forward movement, what gets in the way, and what is irrelevant and can be safely ignored. The largest category, by far, is the latter. Unfortunately, sometimes what has been happily classified as irrelevant rears up and gets in the way. That's a manifestation of chaos. Chaos can undermine the story, or break the frame. The degree of undermining or breakage is proportional to the time and space over which the story in question extends its operations.