And why it will arise before it falls again? just my personal thought, one reason is: It will maximize the profit for powerful institution group. For example: if JPY down from 110 to 130 straightly, the profit is only 20. But if it down to 120,then go back to 110, then go down to 120 again, then go down to 130, see, more profit.
Well, now! I'm convinced!
