I propose that a certain amount of game-design literacy is required for successful adulting in modern western culture.
I posit that a certain amount of knowledge about games and how they are played is extremely useful with the prevalence of gamification in so many of our interactions with entities that have some power over us, whether they be banks, employers, or government agencies large and small.
This topic may also include interpersonal games that are played, especially (but not exclusively) as played on social media.
Know how games are played can help us play these games if we so choose, or help prevent us from being played by them.