Title Text:It’s frustrating to calibrate your precautions when there’s only one kind of really definitive feedback you can get, you can only get it once, and when you do it’s too late. Origin:https://xkcd.com/2395/ https://www.explainxkcd.com/wiki/index.php/2395:_Covid_Precaution_Level 新冠预防等级 校准预防等级就算了，还只能得到一种确定的反馈，而且就一次机会，知道后还为时已晚，太难了。 http://xkcd.in/comic?lg=cn&am… Read more