Historian Tom Holland claims that Martin Luther would have been great on social media. Most of us that read Luther got that, but Holland writes that “Luther… displayed a breathtaking command of all the qualities required to flourish on social media: a genius for aphorism, for invective, for denouncing fake news, for spreading fake news, even for publicly doting on pets. (‘Oh, that I could only pray,’ he once exclaimed, ‘in the way that my puppy stares at meat!’)”