International politics is zero-sum once you've already reached the Pareto frontier and can only move along it, but if forecasting is sufficiently bad you might not even be close to the Pareto frontier.
thanks army and bramflakes for illustrating. My guess is to agree--but I still have doubts. Maybe they have nothing to do after all with "zero sum." I think I'm concerned that forecasting could be used by governments against citizens. Before participating again I may need to read something in more detail about why this is unlikely. and also why I shouldn't participate in SciCast instead!
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