Earlier quoted context omitted.
If you act early, it will always appear you overreacted. If you act too late, well... https://www.nytimes.com/video/opinion/100000007076660/corona...
This goes both ways, though. If you act early-- and way over-react-- and it works, you get to claim to be the savior of the country, even though the reaction was disproportionate. There's no way to disprove it.
The gist is that this is more like avoiding rock climbing because you don't want to fall to your death. It's not likely that you fall to your death rock climbing, but it is MUCH less likely if you never climb. But, you can't know the future, so you can only take actions that are either right or wrong in hindsight.