“Your kid is not weak-willed because he can’t get off his phone,” Brown says. “Your kid’s brain is being engineered to get him to stay on his phone.”

The headquarters of Boundless Mind looks as if it were created by a set designer to satisfy a cultural cliché. The tech startup is run out of a one-car garage a few blocks from California’s Venice Beach. On the morning I visited, in March, it was populated by a […]