A map of the inhabited world with measured intervals is later described as Eratosthenes’s cartographic scheme
Strabo, as Perseus and ToposText print him, describes Eratosthenes dividing the inhabited earth with a chart and measured intervals. 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
Strabo, as Perseus and ToposText print him, describes Eratosthenes dividing the inhabited earth with a chart and measured intervals. Later reconstructions printed in atlases are evidence, not his hand. This is stored apart from the three-book prose Geography.
Context
Hipparchus criticised distances and the shape of the oikoumene. A 21st-century schematic of parallels is not 230 BCE.
Eratosthenes’s documented role is bounded by other offices and collaborators named in the sources below.
Conventional years are c.276–c.194 BCE. Almost no autograph survives. Cleomedes, Strabo, Nicomachus, and later encyclopedias are the public file. Classroom globe reconstructions are not his acts. Contribution is complex.
Who was responsible
Contribution type and responsibility level for each recorded actor — not sole-author shorthand.
Eratosthenes
PersonDirect responsibility
responsibility level 0.4 · verified
What changed
Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.
- FactA map of the inhabited world with measured intervals is later described as Eratosthenes’s cartographic scheme
- strengthensDriverDigital Learning Access
- weakensIndicators (3)Learning Poverty Rate (low- and middle-income countries)
impact weight 0.5 · Effect from 1 June 230 · verified
Weakens · Relationship strength 0.2 (weight 0.5 × 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 0.17 (weight 0.5 × 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 0.15 (weight 0.5 × 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.ToposText — Strabo, Geography (Eratosthenes fragments)ToposText / Aikaterini Laskaridis Foundation · High credibility · verified
- 2.Perseus — Strabo, Geography (Jones)Perseus Digital Library / Tufts · High credibility · verified
What the sources establish
Perseus Strabo and ToposText independently carry the chart-and-intervals description.
Established: later geography describes an Eratosthenic chart of the inhabited world.
Eratosthenes did not file a later UNESCO form, a later Loeb colophon, or a later museum label as a personal act.
Causal path
How this event connects to drivers and indicators in the graph.
- ActorEratosthenes
- contributed toFactA map of the inhabited world with measured intervals is later described as Eratosthenes’s cartographic scheme
- strengthensDriverDigital Learning Access
- weakensIndicatorLearning Poverty Rate (low- and middle-income countries)
Cite this page
Factrail. (2026). A map of the inhabited world with measured intervals is later described as Eratosthenes’s cartographic scheme. Factrail. https://factrail.ai/facts/era-oikoumene-map
https://factrail.ai/facts/era-oikoumene-map
Accessed 16 October 2026.
By the Factrail desk · Method: how we source and score · Last reviewed
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