The metaphor is so obvious. Easter Island isolated in the Pacific Ocean — once the island got into trouble, there was no way they could get free. There was no other people from whom they could get help. In the same way that we on Planet Earth, if we ruin our own [world], we won't be able to get help.
Jared Diamond, Collapse: How Societies Choose to Fail or Succeed
destruction, environment, escape, help, isolation, preservation, society