The back-to-school spike in Covid-19 cases is on, with France, Spain and the UK all fearing an exponential rise in casualties. That's before the next spike when the weather here turns cold and Europe migrates indoors. Can we even bet on a vaccine to make this nightmare go away? Or is time to discuss the simple hard truth the West seems to have rediscovered with this unexpected pandemic: there's no such thing as zero risk. How to manage that risk? What sensible measures to reduce that risk and what does learning to live with the virus actually mean?