The document discusses how digital algorithms analyze individuals' digital activity and social media to shape their attitudes, behaviors, and identities. It explores how innovations in web graph analysis are creating "digital mirrors" that reflect back new insights about individuals' behaviors to them. The document also examines questions around whether what people do on social media can correlate to their professional careers and what social media posts may reveal about an individual's personality, moods, and intentions. The overall theme is that social media information can predict future careers for individuals.