# Up to 60% of medieval texts and 95% of manuscripts have vanished, study finds

> **Open Intelligence Dossier** · First detected: 2026-07-12 04:07 UTC · Category: Science

## Executive Summary
A new study reveals a staggering loss of medieval history, estimating that 60% of texts and 95% of manuscripts have vanished over time.

## Intelligence Brief
A recent scientific study has quantified the extensive loss of historical records from the medieval period, revealing that up to 60% of medieval texts and 95% of manuscripts have vanished. This research, highlighted by Archaeology News Online Magazine, utilizes a methodology involving the creation of medieval text family trees to estimate the scale of these losses. The findings indicate a massive gap in the surviving written record, specifically noting that 60% of medieval knight tales have been lost to time. These results provide a mathematical glimpse into the fragility of ancient documents and the vast amount of cultural data that is no longer accessible to modern researchers. Coverage of these findings has appeared across several specialized publications, including Phys.org, Popular Science, and The Debrief. According to Phys.org, the research relies on the construction of text family trees to suggest that the majority of works disappeared over the course of several centuries.


The Debrief further specifies that scholars are now employing simulations to uncover evidence of these lost manuscripts. While the simulations allow historians to better understand what has been missing, The Debrief also notes that these discoveries have introduced a new concern for historians regarding the nature of the surviving archive and what that means for historical interpretation. To understand the significance of these findings, it is necessary to recognize the role of manuscripts as the primary vessels for medieval knowledge. The distinction made by Archaeology News Online Magazine between 'texts' and 'manuscripts' is critical; while 60% of unique works may be gone, a far higher percentage—95%—of the actual physical manuscript copies have vanished. This suggests that even for the texts that do survive today, we possess only a tiny fraction of the original copies that once existed. This loss is particularly acute for specific genres, such as the tales of knights mentioned by Popular Science, which underscores the selective nature of historical survival.


Looking forward, the focus for the academic community will be on the continued use of simulations to map the voids in the historical record. As reported by The Debrief, the ability to uncover evidence of 'lost' manuscripts through these simulations represents a shift in how scholars approach the archive. Future developments will likely center on whether these simulations can identify the specific characteristics of the missing 60% of texts or if they will primarily serve to highlight the scale of the loss. Coverage does not yet specify if these simulations can recover the actual content of the vanished manuscripts or simply prove their prior existence.

## Multi-Source Evidence Table
| Source Outlet | Headline | Verification URL |
|---|---|---|
| The Debrief | Scholars Uncover Evidence of ‘Lost’ Medieval Manuscripts Using Simulations—Along With a New Concern for Historians | [Source Link](https://news.google.com/rss/articles/CBMi0gFBVV95cUxONkRKbWp0REVLRWFvS2t4NkxMLWpNQ3c0YmxsdmhlNHpTa0VJY1o3MFBlV1V6Y2JGQVNuTnZOWGNfZUpTZzJuNnNkUzVoRUw3QnBIZ0xXVWVfM0ZIQXhuUVFJRUJ1VTY2Tm5ycGQwSkJTSFAyemozcXplRU1aUTJOSGU0cDNHcHY4RGVqNXlZaWNyNVdVRDdqb2xqSXJ6QzRRMEVxMGtUWU5NdlNMaUlseEx2VkhFQjZXc0x3VEp6bDNGUDVEMXQzbHhUcWpOb2JnWVE?oc=5) |
| Phys.org | Medieval text family trees suggest 60% of works vanished over centuries | [Source Link](https://news.google.com/rss/articles/CBMie0FVX3lxTFBmaTIxOXZTMlkxZ1lHSDBibXdxZVFPbjhXR3lFOWdtdzRJZkRBZTFONWpRVmZCZGRmMmdzaVQySnFCM0lVZDlnOUVfLTFfcUdHeUgtQnRPWUdzTUxqdHFPRVlaQXZZTU9fbF9BQm9tMTQtb1ZENHFXUWZNNA?oc=5) |
| Popular Science | 60% of medieval knight tales lost to time | [Source Link](https://news.google.com/rss/articles/CBMid0FVX3lxTFBVb04zdVJjZVB4YlVnTk4tdjdWcG8tNHNyejVXV0hYVHBBWE4zYzFabExvT1otdWpNVnBuY19DNXZDM3lUXzNNRVVOWTF6RUZqNWlhQ3NQVG1sWGMzenFUZVd2V0ZLNzZxRFBtVi1yZDMxZkhfVTZj?oc=5) |
| Archaeology News Online Magazine | Up to 60% of medieval texts and 95% of manuscripts have vanished, study finds | [Source Link](https://news.google.com/rss/articles/CBMihwFBVV95cUxOUk5YX2xma3FMbW04OUJqYWVCTXVGMFRrX2VfUXM1X2VzRkduRkcyUUlNSWQ4RWJLcDFtaGdvSFVqRDlRWnU1bWZiNllYVFpUWXo5MGdXSEtscHFiQWJzNUtNUi1mVGt1RWVUYmRUdkVjNXlMcUN1eFg4UWV4WVpKUE9HZVRKMEE?oc=5) |

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*Canonical Source: https://pulse.byoviral.com/trend/2026-07-12/up-to-60-of-medieval-texts-and-95-of-manuscripts-have-vanished-study-finds*