I read this and it's still unclear to me whether the author conducted any experiments involving pair programming. If he did, why hasn't he described them in det

I read this and it's still unclear to me whether the author conducted any experiments involving pair programming. If he did, why hasn't he described them in detail? If he didn't, where did his data come from? I guess he didn't, and where the data comes from is "a pair-programming calculator developed by the author"—in other words, software he wrote that gives whatever he decided the answers should be, and whose code he isn't (at least in this piece) publishing.