Will the IMF have to move it's headquarter to China? Appreciation of the yuan would appreciate the value of Chinese GDP and could make it the world's largest economy! But, when? Or, could the dollar and valuation of the US economy make a sudden nose dive as happened with other major currencies not backed by real growth. Paradox is that raising value of an exchange rate forces efficiency measures to stay in business which for China means more capital per worker, but what do you do with all the workers wanting jobs. You grow your economy! Problem for America is that the secret behind real economic growth may be discovered by a foreign power, and it ain't building armed forces or weapons.
New Move to Make Yuan a Global Currency - WSJ.com
http://online.wsj.com/article/SB10001424052748703791904576076082178393532.html?mod=djemTEW_h
Time is, was and will be. Without time we would not be. What a load it has to carry! Time seems eternal! You might even ask whether cycles in time exist? If so read Roger Penrose's book on new attitudes in physics towards possible "Cycles in Time".