I have a feeling this discussion became too chaotic: about 90 posts in October and about 30 in November, all interesting but too many of them only loosely related to my original post.
I propose to close the thread. I hope some time in the future to prepare
a short summary (but first I would like to check some technical issues,
so it will take some time).
Thank you very much to all who contributed.
Best regards
Janusz
--
,
Janusz S. Bien
emeryt (emeritus)
https://sites.google.com/view/jsbien
