They also cite investment opportunities in emerging markets, and make the obvious point that if China and India stay on track, their economies' relative weight in the world will double in the next decade or so, as rapid real growth is accompanied by appreciation in their real exchange rates. Sooner or later, the Chinese and Indian central banks' desire to hold down exchange rates to boost exports and their rich citizens' desire to keep their money in accounts at Bank of America will be offset by the sheer magnitude of investment opportunities.