The Covid-19 opens up the prospect of a double crisis, both in health and economic. To avoid a double blow, the citizens, and policies will need to be at the height. To think of the public intervention, let’s start with the traditional compromise between individual responsibility, promoted by the financial awareness of economic actors to the consequences of their actions, and solidarity, which combines the same consequences.

Where to put the cursor is a question of common sense : we need to be insured against events over which we have no control over, and responsibility…