Democracy appears to work, but why?
Back in the oldest days of democracy, the least fortunate set of people were always the largest set of people (workers / slaves). Today, if you are a minority, and you want something, your fate is in the hands of the majority voters.
Given many (most) people vote primarily out of self interest, since most people aren't minorities, few votes are in the minorities' interest.
Assuming we all want the same thing, The Wisdom of Crowds can explain some of how it all appears to work. I propose though, that for The Wisdom of Crowds to work, self interest must be eliminated, since it increases emotional biased factors.
In an attempt to remove self interest, what would happen if instead of voting for yourself and your own people, you vote for others, and them for you.
The people of USA voted policies and representatives for Canada, and vice versa.