So, am I re-reading your post correctly. That since we dealt with dozens of pandemics, we should what? Do nothing? or Wait to 'figure out which people' get sick

So, am I re-reading your post correctly. That since we dealt with dozens of pandemics, we should what? Do nothing? or Wait to 'figure out which people' get sick, then react? But wouldn't people then already be getting sick and thus already too late to quarantine? This whole line of reasoning is based on 'hindsight', you're fantasizing about past decisions with current knowledge.