And then some cheery soul usually always pipes up and says, "Hey, don't forget about plagues!"  There are some optimistic answers to this question, so some people will bring up the Age of Exploration and the opening up of the world.
还有些生性欢快的人物常常会跳起来说 “嗨，别忘了瘟疫。” 我也得到了一些积极的答案， 有些人提起了地理大发现时代 和对世界的探索。