Hi Fred! When I was 10 years of age or so, I felt and still feel your book was one of the most useful references ever! Perhaps Dave did not spell out in explicit detail how to interpret his results but there is definitely very useful information in this thread. Since I am educated as a physician and have a huge background in the physical sciences I can say with confidence Dave conducted a very thorough dissection of the piece in question, it was compared to an original example as a control. I wish you would do the same of your analysis of items you question. Best Wishes, Bob
