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So, is there a "new economy?" The answer is: It depends. It depends on how you define new economy, and it depends on where you live.
The Broader interpretation that often seems to underlie the new economy label is that we are witnessing a more fundamental change in the paradigm. The old rules no longer apply. Throw out the NAIRU. Heck, throw out supply and demand. No limits, no business cycles.
There are broader and narrower definitions of the new economy. The narrow version defines the new economy in terms of two principal developments: first, an increase in the economy's maximum sustainable growth rate and, second, the spread and increasing importance of information and communications technology.
I accept the proposition that there has been a significant improvement in underlying productivity growth in the United States, that it is very closely tied to improvements in information and communications technology, and that it is likely to spread around the world. But I resist the new economy label because it seems to encourage a disrespect for the old rules that could seriously undermine our success in taking advantage of the new opportunities.