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I am sitting on the sunny back patio, listening to the call of the swifts and watching my five-year-old son pick and eat blackberries along the garden wall. With a phone in one hand and a cold drink in the other, I glance at my social-media feed and notice a post from a biologist exhorting her followers to carry on with peer review, even if they’re on holiday. I feel a sudden worry that this plea is directed at me personally, as referee requests stack up in my inbox.