There's been a deal of deserving hype around this podcast from storytelling company Narativ, and if you haven't heard it yet, you should. It's sophisticated narrative non-fiction about memory - reliable or not, fixed or not, meaningful or not. There's lots of room to move inside that premise, and it's seen the show turn in interesting directions already, eight episodes in. In this, the first of a thematically linked series, we meet former Wired writer Evan Ratliff, who at the relative dawn of the social media age (circa 2009) embarked on an experiment in pursuit of a viral story: he would try to disappear and the public would try to find him. What happened next didn't just expose his private life, but subsumed his identity. It's a fascinating look back at a time that already seems naive, and asks necessary questions about the ways we confirm our own existence.