Well, I appreciate your comment, but I did not "assume" anything about Darktable's UI or abstract rules-as-I-like-them. The unlabeled icons and the infexibility of the adjustment widgets I mentioned are demonstrably detrimental to the usage of the program in practice. You *could* memorize the names of all of the unlabeled icons, for example, but the fact that you could do so does not mean that the icons successfully communicate what they do.