When my college kids returned home after the University of Tennessee canceled live classes for the semester due to coronavirus, my wife and I laid down the law. “You’re in a functioning home now,” we said. “This isn’t a college dorm. We’ll go to bed at a decent hour and get up at a decent hour.” Exactly 10 days later I found myself logging onto the online multiplayer video game World of Warcraft at 1:30 a.m., just minutes after we finished binging Tiger King on Netflix.