Australia should close its borders to prevent the spread of coronavirus. Banks should offer discounts to first home buyers. Greenpeace should stick to legal protests. If you’ve ever made one of the...

Australia should close its borders to prevent the spread of coronavirus. Banks should offer discounts to first home buyers. Greenpeace should stick to legal protests. If you’ve ever made one of these statements - or something like them – you’ve entered into the thorny philosophical territory about the relationship between individual and group duties.