How your phone hooks you: dopamine, infinite scroll and the slot machine in your pocket

The man who invented infinite scroll now warns people about it. The man who invented pull to refresh called it addictive. Your phone is full of small designs like theirs, and each one is built to keep you scrolling. See why dopamine is about wanting more, not about enjoying, why a feed that is mostly dull is so hard to put down, and how a slot machine got into your pocket. Then the hooks that work even when the phone is face down: autoplay, notifications, red badges and streaks. And the small changes to your phone that worked in studies.