Once in a while – and I soon got better at watching those at the window while appearing to gaze at the RPO Building – a child would come to stare at us, and there would be a sadness there, or sometimes an anger, as though we’d done something wrong. A child like this could easily change the next moment and begin laughing or waving like the rest of them, but after our second day in the window, I learned quickly to tell the difference.