The danger of learning too much from Covid

When Ray Bradbury was asked if his dystopian vision in Fahrenheit 451 would become a reality, he replied: ‘I don’t try to predict the future. All I want to do is prevent it.’ In the hot embers of the Covid-19 pandemic, it may not be enough to foresee infectious disease threats if we lack the ability to forestall them. After all, predictions were made about 2019. In a Ted talk four years earlier, Bill Gates warned about what he later called ‘Disease X’, a respiratory disease that would cause millions of fatalities. Devi Sridhar, a professor of public health at the University of Edinburgh, addressed the Hay Festival in 2018 with an uncanny description of a zoonotic virus from China that could spread across the globe. Both Sridhar and Gates play down their prescience as the kind of thing anyone who is au fait with epidemiology might have come up with.