The recent pandemic has provided a lot of insights into how societies and governments around the world respond to the kind of collective crisis, where the potential harm faced by each member of the community does not primarily depend on their direct actions, but also on the actions of anybody around them. We can hope to draw some lessons from these insights for the the climate crisis, which presents similar challenges but over a much longer time and at global scale. On the bright side, lessons from the pandemic have shown that eventually most governments and communities have eventually responded quite decisively and to a level that might not have been expected. One specific episode that happened in Switzerland around June 6th 2020, I found particularly insightful: the question of wearing masks in public transport. In the days leading up to June 6th, an estimated less than 5% of passengers in public were wearing masks. Despite the government having strongly recommended it and repea...