The battle is on between the dollar and yuan as the world’s reserve currency. Or is there a battle at all?The dollar will remain the world’s top reserve currency—not the yuan any time at all—and for four good reasons to be spelled out in a while.A CNBC report early this year echoed a general sentiment that the greenback is ready for a fall as the top reserve currency by 2015. Meaning, countries will stop using our money to exchange goods, or conversely, we need to change our dollar to another currency to export or import goods.The country’s trillion-dollar debt, the...