A global currency, here is how we set the initial value: Take all the people in the world, and multiply it by their expected earnings over their lifetime. This can be done roughly, as the number of people in Africa and their earnings power is less than the people of say Finland. This number gets reset every year. As a nation becomes more educated and enters the first world, so does their expected earnings rate. Then, raise it to some exponential of the processing computational power of a chip. This is similar to the way the DXY is computed by raising it to some predetermined exponential number for each currency. The exponent gets revised once a year as the computational power of computers rise. The idea is that we can't print money anymore wili-nilly, and money is tied to people's ability to produce. Then, by raising this monetary unit by the computational power of computers as they get more powerful, as computers become more powerful and are able to do more of our jobs, our saved money becomes worth more. Also, this is great for poor nations because as computers approach singularity, the distinction between poor and rich is dramatically lowered - even a single dollar raised to a Quadrillion operations a second is a big amount. This also encourages saving instead of consumption in the short term, solving Global Warming. This will mean we have more money to purchase things as we are less needed to work since our jobs will be taken away. No more currency wars. Yes, this resets everyone's current money. But you get to keep all the crap you have already attained. What you can't buy with the old money is services, or people's time. For that you have to use the new money. Once the full singularity arrives, money is irrelevant anyway. This is a bootstrap until then. Responses.
http://www.imf.org/external/np/exr/facts/sdr.htm it's like a dark pool for countries to move money without unduly moving the currency market