From Schneier on Security – A Self-Enforcing Protocol to Solve Gerrymandering

[[{“value”:”In 2009, I wrote:
There are several ways two people can divide a piece of cake in half. One way is to find someone impartial to do it for them. This works, but it requires another person. Another way is for one person to divide the piece, and the other person to complain (to the police, a judge, or his parents) if he doesn’t think it’s fair. This also works, but still requires another person—­at least to resolve disputes. A third way is for one person to do the dividing, and for the other person to choose the half he wants.
The point is that unlike protocols that require a neutral third party to complete (arbitrated), or protocols that require that neutral third party to resolve disputes (adjudicated), self-enforcing protocols just work. Cut-and-choose works because neither side can cheat. And while the math can get really complicated, the idea …”}]] Read More  

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