The Facebook engineer who made the “like” button is avoiding the addiction culture he created. He says even things made with the best intentions can have “unintended, negative consequences.” His answer? Setting his phone’s parental controls to keep him away from apps. He and other tech insiders are “weaning themselves off their own products,” sending their kids to elite schools where devices are banned. Now, they’re worried that social media could kill democracy. I don’t know, planned obsolescence?