@ Felix
>Ideally, yes, but it is not realistic to think none should want or need to
>use controls provided for that purpose.

I never said it was realistic I am merely pointing out that people browse the web and do not want to adjust their screen everytime they go to a different page.

>Or they don't. Screens purchasers and screen users are probably different
>more often than they are the same. Not everyone gets to choose the screen he
>must use.

People by a personal computer to use personally. Yes in business and some other instances someone different than the end user will purchase the product.

>Not everyone is "normal". You just wrote you have uncommon limitations. I do too.

Nobody is perfect. I asked you for a bit of leway due to a couple of conditions, to suggest I am not "normal" is a little over the top.

>That would be nice. It isn't reality. Computers and software offer various
>adjustment possibilities for good reason, among which, personalization.
>People's capabilities, needs and preferences vary in many ways and for many
>reasons. Controls are provided so accommodation can be made to them by the
>user. Do you remember what the "P" in "PC" means?

Bold highlight by me. A little bit condescending there but I will reply.
It is Personal but you said above that not everyone who buys a Screen is the person who uses it so in that instance it is not personal.

>You missed the point of both screenshot and instructions for viewing it.

Once you explained it to me I did not miss the point but you most certainly miss mine.
You see the screenshot is of my system not yours. I offered 2 different PCs in the 2 sets of screenshots to show that the adjustment fits.
That is how the before and after look on my screens. Nothing more nothing less.

>That's part of the root problem with web design, that designers *don't* take
>initiative to observe from perspectives other than their own.

I'm sorry I thought posting things here was taking initiative and allowing others to see things from their perspective. You are sharing your perspective and I am now discussing it with you.
To say to me as a designer I haven't taken initiative by letting you see things makes no sense. I could have hidden it from you but I didn't.

>Your '"physical context"' is incomplete.

Actually it is complete and it has no added extras. It is what it is unlike the shot you offered which has a lot of added extras that are basically a measuring device.
People don't sit browsing the web "normally" with a ruler on their screen, they have an open page as it was designed without a ruler telling them that an inch is 25.4 cm.

>My screenshot contains an object that can be measured with a ruler so as to
>be readily adjusted to achieve the perspective observed here.

That is fine for some people, I have no argument at all about that but to suggest everybody needs to use such a device ignores people who just buy and use without fiddling around.

>How does that help anyone lacking the same screen size and resolution
>(measuring unit / resolution = density) as yours to see the context and
>perspective you see?

It's a screenshot they see it as it is in the picture, no need to adjust it because even at reduced size the proportions are the same.

>Except most *are* made to measure (in px units), and are *not* made to adjust
>to the users individual setup (constrained as well as enhanced by site/author
>CSS). Most size most objects in CSS px, which wholly disregard the user's
>environment.

Sorry but we are going round in circles. Let me just say in my experience most are not made to measure in px units.
Why because people view the web in smart phones, tablets, laptops, standard screens, wide screens, and now ultra wide screens, TVs, and some even on fridges.
To make everything in made to measure px units would make small devices scroll  while large screens are mostly empty.

>How many words fit on the screen is a yardstick for measuring the wisdom of
>space usage. Text experts universally agree that too many words per line
>negatively impact reading efficiency. Site styles putting huge numbers of
>words on a line are indicators of unwise use of screen space.

I disagree with you, lets leave that at that.

>No disagreement from here. Our differences are about the evaluation of why it
>happens, its impact, and what might best be done to avoid or eliminate it.

Felix if you agree offer up some ways to fix it. You have alot of knowledge and information yet have not offered 1 suggestion that I have seen (I admit I may have missed them and if so p0lease point me to them) as how to fix it.
I am willing to learn new ways (or old in this case) but to learn them it is often best to be guided by someone who knows. I am eagerly waiting for your help and suggestions.

Cheers.
Michael.