Symmetry Works Everywhere

The Story:
A man discovers an island where all the inhabitants are one-eyed. Hoping to make money by starting a "zoo" of this species, he attempts to trick the people of the island into a cage, resulting in himself being tricked and captured. The intent of the one-eyed people was the same as his own--to make money.

My Comments:
When something works one way, it is bound to work the opposite way. If one can take advantage of someone, it is possible of that someone to do the same thing back. Don't expect something to only go one direction.