Isn’t it always the way that as soon as we’re told we shouldn’t do something, we want to do it all the more? How inevitable of us. How pathetic, and predictable. But we are who we are. As we watch the beginnings of a Covid-19 pandemic play out – like the first five minutes in a disaster movie, pretty sure Cillian Murphy will be wandering the streets in a surgical gown soon enough – we have been told, among other things, that we shouldn’t be touching our own faces. When...