Calculating the Risks (Cecilia Peartree)

Yesterday my son travelled on a bus. I can't remember when he last did this. It must have been over a year ago, before he started working from home. His trip, across town to collect things from his old place of work before he started a new job, was the subject of a disproportionate amount of discussion between us beforehand. His first thought was that he would walk all the way there and back, but as the route would involve going up quite a steep hill and down the other side (and return) I tried to talk him into getting a taxi at least one way. He was reluctant to do that but at last decided to risk getting the bus. On his way back, another family member happened to see him waiting for the bus and gave him a lift home. As soon as he told me this, I began to work out whether there had been any risk attached to that option. Happily, the risk seemed minimal as the other family member had been fully vaccinated and they both wore masks. We have both avoided risk almost entirely by stay...