Consider how we classify music genres by age groups. The same goes for the medium we choose to tell stories in: books, movies, television, video games, even virtual reality. Even though reality is already more fluid, we are layering and sorting our interaction modes into specific types (Facebook is for Generation X, Instagram is for Millennials). At Glastonbury, for example, it’s not uncommon to see a crowd where generations blur as they sway to the music of Coldplay. But we’re not yet at the stage where you can ask your grandparents if they know what Brat Summer is and expect them to know what you’re talking about. In a post-aging world, I think your grandparents will have no trouble knowing all about Charli XCX. Moreover, dancing with you to his songs.