NARRATIO SUPER FACTIS: Fun With Charts – Paul Krugman Edition. “See what was done there? The period in the early 1960’s was removed, and so was the period from 2000 on. In other words, out of a 55-year time period, Dr. Krugman decided to remove 20 years’ worth of data. For those keeping track, that’s removing almost 40% of an entire data set just because the data didn’t fit the narrative. And when you add those years back you get a result that shows a very weak correlation.”