<The world can only tolerate so much contradiction.> My guess is the world can tolerate it as long as everybody is making money off it. When that stops, the co

<The world can only tolerate so much contradiction.> My guess is the world can tolerate it as long as everybody is making money off it. When that stops, the contradiction might seem intolerable. The world needs a default reserve that's not tied to any single central bank. For all the upsides there are also real downsides for the US having its currency as the default reserve.