How did fictive thinking—this evolutionary leap forward—occur almost simultaneously in independent populations separated by huge distances? The same thing happened with the development of agriculture, twelve thousand years ago. We found eleven different civilizations, completely isolated from each other, in which agriculture emerged independently, at almost exactly the same time. Or writing—the next great human breakthrough, as it allowed us to store data far more efficiently than we could through oral traditions. This, too, occurred at the same time, in at least three isolated groups.