Is There Any Lesser Authority Than Alan Greenspan?

That is undoubtedly the question that readers of Robert Samuelson's column on negative interest rates are asking. At one point Samuelson tells readers:

"No less a figure than former Federal Reserve chairman Alan Greenspan has suggested that it’s just a matter of time before negative rates come to the United States."

For folks too young or too old to remember, Alan Greenspan was chair of the Fed as the housing bubble grew to ever-larger dimensions. He insisted everything was just fine, in fa...