They choose a third court to arbitrate. In fact, one might have already been chosen by the two DROs for just such a situation.
eudaimonia,
Mark
simply put, what if they don't? For all practical purposes the neighboring DRO is a foreign country, I'd assume this would be similar to a negotiation with Mexico. Is every DRO going to have treaties and agreement with every other DRO? the impression i get is that there are a lot of DRO's. it seems like they would all be a conflict of competing precedents. And there is no "Supreme court" to lay down the have the final say, and if there was why would all DRO's recognize it?
People are very stubborn anyway, they're not always going come to some agreement or compromise.
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also, Richard: you talk about how DRO's are "peer reviewed". But the problem is that people are dumb as rocks when it comes to pre-conceived notions. The idea that people can agree to basic rules through peer review, on something that is ultimately subjective like morality and governance, seems impossible to me. Sure, scientists can come to general agreement about objective things, but can they convince the public? Furthermore, i don't understand how peer review would even work if you moved from the objective (science) the the subjective (politics). Scientific truth exists and there is a proper scientific method, but there is no "right" way to govern a country so how would they come to any agreement?
Really, RichardT would know the mentality better than me... 55% of people in the U.S. don't believe in evolution. That's what happens when peer review hits the general public, it's all Greek to them. So how are they going to judge which DRO is best? Simply, they'll pick whichever one their parents pick, or whichever one their church picks, or whichever one their respected community leaders pick. that's assuming the peer reviewers can even agree on basic methodology... in scientific circles you have to follow the scientific method, but there is no such thing as a scientific method for politics.
Peer review also does not overcome factionalism, there will be factionalism, lots of it. When given a choice between believing someone with the best evidence and most consistent views, or following your own church/social group like a sheep in the herd, most people will pick the later because they simply don't know any better and don't have time to think about these things
Furthermore, i could see some DRO's, ones associated with specific regional churches for example, becoming very very powerful such that they could be in a position to intimidate others who do not comply. They'd essentially become the de-facto government, anyone who went against them would be shunned in the same method that "evil" dro's are shunned by your model. Actually, the people who went against them would probably just disappear mysteriously. It goes back to the power vacuum.