The Psychopathic Chicken (and Other Lessons of Evolution)
In the fifth chapter of his 2007 book Evolution for Everyone: How Darwin’s Theory Can Change the Way We Think About Our Lives, David Sloan Wilson writes: “It turns out that something very similar to my desert-island thought experiment has been performed on chickens by a poultry scientist named William Muir.” That probably sounds odd. It will likely sound even odder when you find out what the desert-island thought experiment is: a set of three hypothetical situations to explore human morality through the lens of evolution.
It might sound like a lame excuse. But if a man cheats on his wife, he might explain himself this way: “I couldn’t help it. My evolved psychological mechanisms made me have an affair.” And he’d be right. Sort of.