Perseus publishes a stable digital Diogenes Laertius Book 10 for public reuse
By the mid-1990s the Perseus Digital Library at Tufts was serving a public HTML Diogenes Laertius, including Book 10, as a stable teaching URL. In the causal graph this event strengthens Digital Learning Access, a driver that weakens Learning Poverty Rate (low- and middle-income countries) — an improving welfare path.
Read the full account
By the mid-1990s the Perseus Digital Library at Tufts was serving a public HTML Diogenes Laertius, including Book 10, as a stable teaching URL. It is not a new Greek witness.
Context
Digital classics shifted access from rare Loebs to a URL. Canonical URLs also freeze editorial choices.
Epicurus is not the sole author of every later object, law, or museum label that uses the name. Shared work with courts, excavators, printers, spouses, officials, and later states does not erase a documented role, and it does not make an ancient person the signer of a twentieth-century statute.
Why it matters
A stable public Greek-English URL is a digital-learning access path.
A stable public Greek-English URL is a digital-learning access path.
Who was responsible
Contribution type and responsibility level for each recorded actor — not sole-author shorthand.
Epicurus
PersonDirect responsibility
responsibility level 0.16 · verified
Garden founder as named in later editions and finds. Printers, excavators, and editors publish the instrument.
What changed
Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.
- FactPerseus publishes a stable digital Diogenes Laertius Book 10 for public reuse
- strengthensDriverDigital Learning Access
- weakensIndicators (3)Learning Poverty Rate (low- and middle-income countries)
impact weight 0.4 · Effect from 1 January 1995 · verified
A stable public Greek-English URL is a digital-learning access path.
Weakens · Relationship strength 0.16 (weight 0.4 × strength 0.4)
Observed
70% of 10-year-olds · 70 above the normal line (2022)
Worse than normalTwo readings: 57% of 10-year-olds (2019) and 70% of 10-year-olds (2022).
20192022 Above normal = worse
Strengthens · Relationship strength 0.14 (weight 0.4 × strength 0.35)
Observed
472 PISA score points · 28 below the normal line (2022)
Worse than normal7 readings, 2003–2022: fell from 499 PISA score points to 472 PISA score points.
Above normal = better
Weakens · Relationship strength 0.12 (weight 0.4 × strength 0.3)
Observed
11% of primary-school-age children · 11 above the normal line (2023)
Worse than normalAbove normal = worse
Evidence
The sources behind this fact and its verification state.
- 1.Diogenes Laertius, Lives 10 — PerseusPerseus Digital Library / Tufts · High credibility · verified
- 2.Stanford Encyclopedia of Philosophy — EpicurusStanford Encyclopedia of Philosophy · High credibility · verified
Causal path
How this event connects to drivers and indicators in the graph.
- ActorEpicurus
- contributed toFactPerseus publishes a stable digital Diogenes Laertius Book 10 for public reuse
- strengthensDriverDigital Learning Access
- weakensIndicatorLearning Poverty Rate (low- and middle-income countries)
Cite this page
Factrail. (2026). Perseus publishes a stable digital Diogenes Laertius Book 10 for public reuse. Factrail. https://factrail.ai/facts/ep-perseus-digital-dl
https://factrail.ai/facts/ep-perseus-digital-dl
Accessed 15 October 2026.
By the Factrail desk · Method: how we source and score · Last reviewed
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