Currency markets sometimes can be described in terms of a planetary system. There’s a central mass, such as the sun or the U.S. dollar, around which everything more or less revolves; we like the sun’s long-term protections against bad policies far more than we like the dollar’s protections against the same.

Then you have a major planet, such as Jupiter, which weighs more than the other planets combined; the Euro occupies this role. Other major currencies, such as the Japanese yen, British pound, and Canadian dollar, can fill in for Saturn, Uranus, and Neptune in an order of your choosing. And then, in both cases, there is everything else.