In the form of a game, "Black Box" refers to a board or computer game that involves shooting theoretical lasers into a box, then using where the light comes out of the box to figure out where some mirrors inside the box are lcoated. http://en.wikipedia.org/wiki/Black_Box_%28game%29
I don't consider any specific two things to be more important, but consider a small number of issues to be candidates for what turns out to be the biggest three things when we have the perspective to look back on this decade. Various aspects of foreign wars and oil/energy policy, political practices (see the recent state-by-state initiative to remove the electoral college and elect the president via popular vote), and novel solutions to the current economic problems (what awesome things will people do with whole city blocks in Detroit, bought for just six figures?) all appear on that list.
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I don't consider any specific two things to be more important, but consider a small number of issues to be candidates for what turns out to be the biggest three things when we have the perspective to look back on this decade. Various aspects of foreign wars and oil/energy policy, political practices (see the recent state-by-state initiative to remove the electoral college and elect the president via popular vote), and novel solutions to the current economic problems (what awesome things will people do with whole city blocks in Detroit, bought for just six figures?) all appear on that list.