What does it take to stay in control of your life online? AI ethicist Jen Golbeck and TED Fellow Shalini Kantayya discuss how algorithms, data collection and AI shape the choices you make every day. They explore whether it’s possible to use the internet without giving up your privacy, how to push back against big tech and what AI should never be allowed to decide.

Idea Knock Down features experts with different perspectives taking on big questions — one block at a time. Made possible with the support Visit Philadelphia.

Humans aren’t just social — we’re ultrasocial, wired like bees and ants for deep connection. So what happens when smartphones take over childhood, tablets replace textbooks and AI companies infiltrate our kids’ lives? Social psychologist Jonathan Haidt lays out three principles of technoskepticism — and explains why, two years after sounding the alarm in “The Anxious Generation,” he’s more concerned (and hopeful) than ever before.

Our brains are hardwired to crave community and belonging — a tribal instinct that drives politics in the United States, says political strategist Sarah Longwell. She shares what she learned trying to convince people to vote against their political party in a recent election and shows why telling a better story about democracy is key to bridging the ideological divide.