It’s the middle of summer in Sweden, and you’re enjoying a sunny day at the beach. Those around you are topping up their tans or frolicking in the water. Yet your eyes are glued to your cell phone. You’re so absorbed in the device, in fact, that you barely notice when a firefighter appears out of nowhere and snatches it from your grasp. This is confusing at first. It’s not a crime to play with your phone on the beach, after all. But what the man tells you next teaches you a very important lesson.