Fayman, and Dr. Yaro borrowed, an idea from ornithology, If you want to be able to find out in the future, whether you have seen a particular bird before one way is to market with a ring.
Fayman,和 Yaro 博士借用了类学的一个想法,如果你想成为能够在未来找出,之前你是否见过某种特的,一种方法是带着戒指去市场。