It's incredible what knowledge we'd have, if it weren't for Christianity and the Dark Ages it engendered. There are tons of palimpsests like this, like the Archimedes Palimpsest, in which the beginnings of calculus was invented, almost two millenia before Newton, but were scraped off to make yet another Bible. Imagine what the West could have accomplished if monks weren't so busy erasing science and math.
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This is not a very historically informed comment. This didn’t take place during the “dark ages,” for one, but in a Christian monastery in Islamic Sinai if the timing of the article is correct. It’s a shame that some of these discoveries were overwritten but this was a common practice in any culture because paper was so expensive.
The writings of St. John Climacus were also far more useful and interesting to people at the time since they dealt with what for them were practical matters of how to lead the life of their community. This isn’t because they were narrow-mindlessly religious. Monks also had to busy themselves with calendrical calculations — and therefore astronomy. These were works of what we would call practical philosophy or ethics, like the famous Meditations of Marcus Aurelius. It would also have been tragic to potentially lose those culturally significant writings in favor of astronomical or mathematical texts.
I find that view to be reductive and correspond to simplistic stereotypes of the European Middle Ages (e.g., calling them the "Dark Ages"). It assumes people in very different places for 1,000+ years did the same thing and had the same views, then blames the fact that their values are different then ours all on their religious beliefs (which, too, were varied).
This is not to say that tons of material was not lost, or only preserved in other places (e.g., Islamic states in North Africa and the Middle East), but it ignores the learning and innovations of the medieval period (scientific, legal, theological, etc.), and of course the fact that so many classical texts were only preserved because of those monks copying them down.
In case you're wondering why you're being downvoted: the history is much more nuanced. While the Archimedes Palimpsest is a genuine and tragic example of lost text, the broader claim that Christianity engendered a period of scientific erasure is considered outdated (https://en.wikipedia.org/wiki/Conflict_thesis).
For example, monasteries were the primary centers of literacy and education in Europe during the early middle ages, and they acted as the primary bridge for the survival of Greco-Roman intellectual heritage in the West. Not always intentionally, but they were the only sanctuary for books during those times.
Besides, this is not how history works. Civilizations come and go and times of transition always take a toll. An eye-opening recent book on these questions I can recommend is Tom Holland's "Doninion: The Making of the Modern World".
Suggested reading: "How the Irish Saved Civilization" [0]
Most cultural phenomena, be is classified as religious, philosophical, political, etc, are double-edged swords. The transition of the Western Roman empire to a succession of leaders from outside that tradition did lead to major losses in living standards of most Europeans. On the whole the root causes are certainly multi-factor such as large epidemics [1] and reflect significant susceptibilities in Roman culture. Many of the seeds for the Renaissance were held safe in the religious monasteries of the Medieval period and Cahill makes the case for the extremely remote Irish redoubts as making a critical contribution. If they made errors in which palimpsests to overwrite, well it is a pity that there wasn't a St. Linus of Torvalds there to save them with git.
0. https://en.wikipedia.org/wiki/How_the_Irish_Saved_Civilizati...
1. https://en.wikipedia.org/wiki/Antonine_Plague