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.

Meta’s Mark Zuckerberg posted a letter yesterday focused mostly on the potential for so-called “personal superintelligence.” He said that while AI will inevitably cause societal change akin to the agricultural revolution, allowing for discoveries that “aren’t imaginable today,” the real frontier will be at an individual level.