摘要：I was recently thinking about how much of the world exists as an abstraction to me. I know the names of distant continents, nations I've never visited, mountains I've never climbed, species that have not yet gone extinct but that I may never actually encounter in real life, at least not outside of zoos. Just as I appreciate the mere existence of these places and phenomena that I have not yet directly encountered in my life, I also appreciate the idea of "sharing the planet" with other human i...
