translation.en: And he wrote the Tierra system, and, in my book, is in fact one of the first truly artificial living systems -- except for the fact that these programs didn't really grow in complexity.
translation.zh: 他写了Tierra系统 在我的书里，是最早出现的 真正的虚拟生命系统之一—— 只是这些程序不会拥有复杂体