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I have had the experience of serendipitous discovery when researching relatively recent history. To find Galileo’s handwriting 400 years later, effectively engaging in both agreement and debate with Ptolemy through the latter’s work… even though he specifically was looking for it, it still must have been surreal.
> even though he specifically was looking for it
The historian was looking for conceptual connections between Ptolemy and Galileo, but the discovery of Galileo’s handwriting in Ptolemy’s book seemed to be a surprise.
I interpreted the fact that he was reviewing multiple copies of the same text as him searching for Galileo’s notes, but I suppose it’s possible that the motivation was the possibility of discrepancies between printings.
By 2b3a51 2026-03-0715:09 Owen Gingerich was a historian of astronomy who did a census of printed early editions of Copernicus' book De revolutionibus. He found a tradition of students copying annotations from teachers readings into their own copies of the book. I recollect that he was able to trace various traditions of commentary each stemming from a well known astronomy teacher.
I suppose that checking early printings of key works looking for annotations is a pretty standard thing to do now.
By SiempreViernes 2026-03-0711:11 The Almagest was hand written about 1400 years before Galileo lived, so it's not so much looking at different printings as at different editions that are based on different set of copies of the copies of the copies etc, further many editors would try to "fix" the ancient work, removing material they didn't like and adding their own stuff or material from other works... it can get very messy.
> I have had the experience of serendipitous discovery when researching relatively recent history.
I would really love to hear about this. (:
By macintux 2026-03-072:47 Nothing all that exciting, just pleasure from finding a photo in a local newspaper of my great-great-grandfather’s (approximately, I don’t remember the specifics at the moment) car being pulled by horses out of a local river, or researching a family name I found in a cemetery and finding interesting tidbits about their history.
Probably the most impressive effort I stumbled upon was a woman from rural Indiana who collected (and typed up) thousands of pages of local history & genealogy in the mid-20th century. Was interesting reading personal accounts of Morgan’s Raid, for example.
It’s unbelievable how that 16th century book looks like it is written in LaTeX. Or plain TeX, probably, given its age XD
Not that surprising if you consider that books before the Gutenberg printing press were artisans work of art that required years of work of specialists.
In other words: Today some of those will cost more than a Ferrari to make. They use Vellum paper that is much better that today's but require killing hundreds of animals each.
Only very rich people could afford that. I had access to European books collections of the 16th that are in Color, much much better than any normal book we have.
If you think about that it is normal. Color require more printing plates in a printer, but just changing your ink if you do it manually.
By saalweachter 2026-03-0713:23 > They use Vellum paper that is much better that today's but require killing hundreds of animals each.
Yes, but also, it's more of byproduct. You raise sheep for wool, they're going to lamb every year, you eat most of the lambs, someone buys some of the skins to turn onto vellum.
The processing to produce vellum would be expensive, and not something every shepherd would be making at home, but the input sheepskin would be plentiful.
By weinzierl 2026-03-078:09 Not at all surprising. There were some "unshakable truths" in typesetting that basically held up from Gutenberg until the Internet came along. Knuth (partly through his friend Zapf) is well aware of them and respected them in TeX.
It's relatively recent that we've found out some of these "universal" rules might not have been so important all along and together with technology as another factor things changed.
It's not unlikely that Donald Knuth looked at examples of 16th Century typesetting when he came to design TeX. Or looked at examples of typesetting that had been influenced by 16th Century typsetting.
By ternaryoperator 2026-03-0721:47 He studied them diligently. His book Digital Typography gives lengthy accounts of his research and includes photographs and examples of how he chose various aspects.
By Aerolfos 2026-03-0710:06 Really? Because what TeX did was make it possible to write "proper" books or formal texts via a computer - that was the whole point
A 16th-century formal book like this would be the gold standard to replicate if you want to make "serious" texts. And yes, in scientific literature, the "serious" text is a narrow target and far narrower than you might expect from the possible variation in a handmade artisanal work. Mostly because when everything is "custom", standardization and regular structure is exceptional
That's not "ancient". That word often means thousand(s) of years ago.
>The pages belonged to The Almagest, in which second century polymath Claudius Ptolemy described his vision of an Earth-centered cosmos.
Where's the article wrong?
By josefx 2026-03-0712:52 Galileos notes where found in a 16th century print of The Almagest.
If you copy the pythagorean theorem onto a page and cross it out, would you be "defacing an ancient text"?
By jswelker 2026-03-073:46 I clicked just to make this same pedantic comment, fellow traveller.
pedantry works best when correct.
"Ancient history is a time period from the beginning of writing and recorded human history through late antiquity."
Perhaps you are mixing up "ancient" and "prehistoric".
Galileo lived in the 16th century. Late antiquity ends around the end of the Western Roman Empire I think, which was before 500AD!?
