In many ways, we’re living in the world that Mark Zuckerberg built. No other person is as responsible for social media ’s rapid ascendance into ubiquity over the last two decade. The platforms he runs — Facebook, Instagram, WhatsApp — see more than 3 billion users total every day, and create billions in quarterly profit for corporate parent Meta.

Mark Zuckerberg has published a lengthy memo that attempts to lay out his big plan for using the company's vast resources to create "personal superintelligence."