Inflation.
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Introduction Inflation results when actual economic pressures and anticipation of future developments cause the demand for goods and services to exceed the supply available at existing prices or when available output is restricted by faltering productivity and marketplace constraints. Inflation persistence refers to how long it takes for a case of inflation to go back to normal. In the article, the author argues how inflation persistence has decreased in the United States over the past 20 years, and the reason might be all the changes that have occurred during this time in the economy. Jonathan L. Willis makes emphasizes on these different changes and/or specific facts that support his theory. First, he uses volatility and persistence of inflation as statistical features of inflation dynamics that have changed, becoming strong evidence to the topic. He analyzes how the structure of the input costs of firms has changed over time, when it comes to...

