Rob, I enjoyed reading your commentary, and appreciated your assessing print longevity in terms of your own longevity. I am very doubtful that my "children," who are all grown now, will have much interest in my prints. I enjoy them because they reflect my own interests and experiences. In the same "longevity" vein, I started accumulating traditional light-bulbs last year when they were due to be phased out, calculating how many I thought I'd need to take me to a statistically-average demise. (Hopefully, that time isn't that close, but light bulbs were cheap.) I know this isn't very eco-conscious, but I certainly didn't like the light quality of what else was available. I know light bulbs are getting better.
In the vein of getting better, I have to say a thanks to Wayne for including the link to the print evaluation image in his post. Though I had read many commentaries on this image in the past, I had never actually printed it for myself, as I hadn't seemed to be having the kinds of problems many other printers were facing, and I had been satisfied working with the manufacturers' profiles I was using. And I think I have been fortunate that, as I have gotten better as a photo editor and printer, the profiles have also improved. I was happily surprised to see how much differentiation I had in the lights, seeing the 252 block clearly against my Canson Platine background. The blacks, however, blocked up below 12. Thank goodness for raws (and tiffs converted from Sigma raws) which I bring into ACR, the newer workings of which were helpfully described by Jeff Schewe's sometimes dense (I definitely need a second or third reading of some sections) "The Digital Negative." I especially appreciated the article which is the subject of this thread, whose author went to some considerable effort to put it together for us, because it demonstrated why we typically have more trouble in the shadows and highlights than in the mid-tones, and brought our attention to the need to adjust and fine-tune there.
I also want to add a thanks for the link, and thumbs-up, to the video in the earlier post. Very illuminating, very helpful! I have very much appreciated the help L-L has been to me in the four areas of my photographic life: the vision thing, the capture, the editing, and the printing. Many thanks to all here who have contributed over the years! --Barbara