Some people got stranded on an island.
There were 6 or 7 Asians, and one was an American.
One Asian was a fisherman, one was a hunter, and one was a gatherer.
The American was assigned the job of eating.
Every day the Asians would build a feast, and then the American would eat it.
The American looks like he is crucial to the economy of the island. Without the American to eat, what would everyone do all day? No one would have any jobs.