At the same time that the Muggle population is increasing, the magic community is responsible for killing themselves off, either literally or by attrition, at least partly through insistence on purity.

• 正当麻瓜人口增加的时候，巫师社会却在自己屠杀自己：无论是实实在在的谋杀或者是自我消耗，这都部分地来源于对于纯血统的坚持。