We used to work together http://www.sfbbm.se/generic-differin-gel-03.pdf faucet differin causing cystic acne toothache selected My second proposition is that the optimal inflation rate is surely positive, perhaps as high as 2 or 3 percent. On one hand,the losses from low positive rates of inflation are likely to be small. The Harberger triangle is negligibly small. At a 3 percent inflationr ate, very few people are going to rush to deposit their checks in order to accumulate a little more interest. I don't see evidence that instability results at low rates of inflation.