Since we are already in a deflation, the argument over inflation or deflation is moot. The real question is: how long will we remain in a deflation? And, if deflation ends, will we then see inflation, hyperinflation, or real growth?
Many deflationists assume that since we are following the Japanese path that we will have the same economic results as Japan. That is, a stagnant economy with generally falling prices as has been seen for the last 19 years in Japan.
While it depends mostly on what the government's responses will be, our experience will more likely be stagnation with long-term inflation rather than long-term deflation. The economic differences are significant.