Some parents think the best way to manage a child's screen time is to set hard limits. But those rules are particularly difficult to keep during a pandemic, when screens are a lifeline for all of us. So what should the rules be? Sonia Livingstone and Alicia Blum-Ross, coauthors of Parenting For A Digital Future, explain why being too strict about screen time might not be the best strategy for your kids - or the whole family.