> Ideally neither side should be favored and the process should be impartial and difficult to game. Dunno how to make such a system though, humans are a crafty

> Ideally neither side should be favored and the process should be impartial and difficult to game. Dunno how to make such a system though, humans are a crafty bunch. There is the Exploding Nash Equilibrium [1]. Some related research is also linked from there. If you are fine with trusting a third party then you don't need the blockchain, and you can use an escrow service who mediates disputes. But my understanding from the article and the comments here is that credit card companies effectively fill this role, but they aren't neutral mediators. [1]: https://www.gwern.net/docs/bitcoin/nashx/index https://www.gwern.net/docs/bitcoin/nashx/index.