Last week's sudden new lockdown of Auckland, New Zealand, reminds us of the immense difficulty of protecting a general population from a highly infectious disease in the absence of a vaccine, especially a disease that has few noticeable effects on large numbers of those infected.
Wholesale lockdowns are accompanied by reports of countless small businesses closing, high levels of mental health problems, and growing alienation in school-age children.
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Gigi Foster is a professor with the School of Economics at the University of NSW.
Peter Godfrey-Smith is a professor in the school of history and philosophy of science at the University of Sydney.
