This is an idea that was put forward by Jean-Claude Trichet in his speech in Aachen a few years ago, when he was awarded the Charlemagne Prize. It would be a useful symbol provided it isn’t an empty symbol.
On the other hand, downward pressure is expected from the long-term declining trend of machinery prices due to technological innovations and from the fall in prices of imported products reflecting the past appreciation of the yen. On balance, overall prices are likely to remain unchanged for the time being.