1.0 Introduction
I wrote this decades ago.
Here is a simple parable. Consider an island with a particularly simple
society with two people, Robinson and Friday. Robinson and Friday live
on one good, call it corn. At the start of our story, Robinson and Friday
have just finished a feast. Both Robinson and Friday have each eaten
food baked out of 50 bushels of corn. Also, Robinson has 50 bushels corn
remaining. Friday, perhaps because he’s newly arrived, has none.
2.0 The Initial Deal
Both Robinson and Friday can see that they must continue to eat in the
future. They understand that their continual survival could be achieved by
planting the remaining corn, saving 50 bushels corn in next year’s harvest,
and living off of the remainder. (In this story, Robinson and Friday are
each able