I've read through the article, and what it all says to me is that there are more questions on answers, and a lot of speculation as to the divergence problem. W

I've read through the article, and what it all says to me is that there are more questions on answers, and a lot of speculation as to the divergence problem. While there are some sound suggestions as to why, it would seem to me that these are all enough to discount tree rings as a useful proxy until they are better understood. To me, the use of statistical methods to blend out the divergence from a specific date seems like a real fudge.