The “provocative conclusion” reflected one author’s subjective perception and was stated as such. He shares the perspective noted by Bennett McCallum’s in his “Is the spurious regression problem spurious?” (Economics Letters, 2010). However, the segment cited by the reviewer has been deleted since it is a more general proposition and is not necessary for the limited analysis reported in our paper.
Penn World Table Revisions and Their Impact on Growth Estimates” NBER Working Paper No.