Humans are not good at weighing the impact of actions that avoided catastrophe. If the right action at the right time looks unnecessary and to costly in hindsight.<br>Here Bhattacharya said experts were humble in saying that evaluating vaccine safety in 2020 would be hard for the fda but after a few months were optimistic of its safety. But he paints this as a political issue associated with a change of leadership. Sad to see two people put humility on a pedestal but knock down those that live it.