SARAH and her brother Benjamin (not their real names) have never seen eye to eye. She’s a professional scientist, he – according to Sarah’s description – is someone who is susceptible to conspiracy theories. They maintained an uneasy truce until a few weeks ago. Tensions came to a head when Sarah was on the phone to her mum, talking her through the online procedure to book a slot for her Covid-19 vaccination…

This article first appeared in The Guardian  on 26 January 2021. To continue reading, click here.