The Deflation Bogeyman

CAMBRIDGE – The world's major central banks are currently obsessed with the goal of raising their national inflation rates to their common target of about 2% per year. This is true for the United States, where the annual inflation rate was -0.1% over the past 12 months; for the United Kingdom, where the most recent data show 0.3% price growth; and for the eurozone, where consumer prices fell 0.6%. But is this a real problem?