Games are among our most enduring cultural technologies. They persist, in part, because they're a way for our brains to serve themselves pleasure for free. The Greek historian Herodotus, for instance, wrote about the Lydian people, who reportedly suffered an 18-year famine. He claimed they alternated between eating food one day and playing games the next – play, in other words, lessened the sting of hunger.
But games aren't just fun: they are also essential education. Animals play to practise for the serious demands of adulthood: kittens chase yarn to drill hunting skills, for example, and young kangaroos rough-house to prepare to box their way up the social hierarchy as adults. With the invention of games, humans brought play into the realm of thought, because games exercise various mental functions.
Games are especially crucial for developing social skills. Plato believed they were the foundation of civic education, arguing that children who learned to follow game rules would grow up to be law-abiding citizens. And Plato wasn't alone: scholars across history have lauded games for a range of educational virtues. As a result, people often endowed games with cultural principles
