A curious fact about large format lenses is that they have changed a lot less than other optics over the last century. So except for the prices and brand names, everything about lenses in a century-old book is still to a certain extent relevant - tessars and dialytes are not going to disappear. The larger negative also leads to greater tolerance in sharpness and focus, so the original old lenses are still usable - and being used. My oldest lens is a 1911 Xenar 180mm/f:4.5; it was produced by Jos. Schneider & Sohn under a special agreement with Carl Zeiss who owned the rights to the Tessar design. The lens is still fully usable, and the shutter runs like - clockwork. When new, a Tessar of the same specifications cost 160 Mark, even more than the Hypergon...

I wouldn't say that there was a different paradigm in lens construction: The prices of lenses were significantly higher than today (with a very few exceptions), at least in terms of "real money". So photographers learned to work with what they had, and that often meant soft corners on the larger plates. Cameras were comparatively cheaper, as any decent cabinet maker could build one.

The "evolution" of lenses over the past century has mostly been driven by the "miniature format" (35mm) which led to a demand for smaller, faster lenses. Rather - since a 50mm lens will weigh 1/27th of a 150mm lens of the same construction and aperture, there was a market for faster lenses. That is understandable when you consider that ISO 25 was considered "Ultra-Rapid" (Agfa's "Ultrarapidplatten" were ISO 25, if Dr. Vogel's exposure tables are to be trusted. I tend to believe them).

Since I happen to read German as well as English, Swedish, Danish and Norwegian I have accumulated a number of very informative books from pre-WWII (and WWI) Germany. Since Goerz, Schneider, Rodenstock, Zeiss, Leitz and Voigtländer were all German, much of the basics of modern LF lenses is described in these books. And then you get to the chemistry: Vogel (first orthochromatig plates), Beutler and Windisch are som of the first names to spring to mind.

So I guess it all boils down to this: I help, because I can. Besides, the Hypergon is an interesting subject