I wrote a paper on dendrochronolgy back in 1975 for one of my archeology courses. Very interesting topic. I don't share Mr. Keenan's lack of confidence in D-scores, though. I think it can become a useful statistical tool in this field.If you had read the article, you would have known that D-scores were invented in the late 1980s (n.3). So you couldn't have known about, or even heard about, them in 1975. Also, contrary to your claim, the D-score does not exist in statistics. Keeenan (sect.2) states this explicitly. Even the researchers that Keenan is criticizing have acknowledged that (n.18).
If you are going to disagree with someone's argument, you ought to at least have looked at the reasons that they give for it. And you shouldn't pretend that you know what D-scores are.
Maybe he has a closet full of them from his days in school...