Feel like something’s off with a person you follow on Twitter? They could be time travelers from the future. In The Atlantic, Robinson Meyer writes about a new study, conducted by two physicists, that sought to find social media users with an uncanny knowledge of future events. “It’s not crazy, and yet it feels crazy when you think about it,” says The Hidden Reality author and Columbia professor Brian Greene. You could also take a look at our own journey to the early days of literary Twitter.