主题：他山之索 可以解惑（上） -- 人间树

其实我对他的说法也不太相信，但没有想到差得这么远。

There are only a few hundred Inka period khipu left--and in the intervening centuries, much of the ability to decipher the meaning of the knots and colors has disappeared. A recent collection of articles in a new book called Narrative Threads, edited by Jeffrey Quilter and Gary Urton, describes how a handful of scholars is working towards cracking the code. Most exciting, recent excavations at the newly discovered ancient civilization of Caral have identified the oldest known quipu, dated to 4600 years ago.

这个很有意思，不知道他们怎么确定的，千年不朽的绳子肯定没有，难道成了化石？

要是大地湾的绳痕有结印就好了。