translation.en: The concept of length of coastline, which seems to be so natural because it's given in many cases, is, in fact, complete fallacy; there's no such thing.
translation.zh: 海岸线长度的概念 似乎是那么自然， 在许多情况下都会用到它， 但实际上，是完全错误的。根本没有这种东西。