I'm a doctor in a major hospital in Western Europe. Watching you Americans (and you, Brits) in these still-early days of the coronavirus pandemic is like watching a familiar horror movie, where the protagonists, yet again, split into pairs or decide to take a tour of a dark basement. The real-life versions of this behavior are pretending this is just a flu; keeping schools open; following through with your holiday travel plans, and going into the office daily. This is what we did in Italy. We were so complacent that even when people with coronavirus symptoms started turning up, we...