Titled The Selfish Ledger, the 9-minute film starts off with a history of Lamarckian epigenetics, which are broadly concerned with the passing on of traits acquired during an organism’s lifetime. Narrating the video, Foster acknowledges that the theory may have been discredited when it comes to genetics but says it provides a useful metaphor for user data. (The title is an homage to Richard Dawkins’ 1976 book The Selfish Gene.) The way we use our phones creates “a constantly evolving representation of who we are,” which Foster terms a “ledger,” positing that these data profiles could be built up, used to modify behaviors, and transferred from one user to another.