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There is a security guard at the entrance of my housing estate. He has worked there for more than a decade, knows every resident by sight and remembers when each child finishes school and which elderly resident takes evening walks.

During the Covid-19 pandemic, he had one more task: reminding everyone entering the lobby to check their temperature. No one ever found him annoying. Everyone understood he was simply doing his job, and that job allowed the entire building to sleep soundly.