A gold standard doesn't imply stability in the prices of the goods and services that people buy every day, it implies a stability in the price of gold itself.
Ben BernankeThe basic prescription for preventing deflation is therefore straightforward, at least in principle: Use monetary and fiscal policy as needed to support aggregate spending, in a manner as nearly consistent as possible with full utilization of economic resources and low and stable inflation. In other words, the best way to get out of trouble is not to get into it in the first place.
Ben Bernanke