From the outside it looks like a lot of policies are reactive, they aim at where the target was days before, not where it is now or where we'll anticipate it mi

From the outside it looks like a lot of policies are reactive, they aim at where the target was days before, not where it is now or where we'll anticipate it might be by the time policies go into effect. We already know we're acting on imcomplete, time-delayed information, i.e. we will only learn a few days later when the variant arrives in another country. So we have to compensate for that either by shutting everything down or by introducing artificial delays. And that's assuming all countries are testing and reporting the spread early. Some countries might lack coverage and thus act as dark hubs.