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The Geography presents a coordinate gazetteer whose Mediterranean longitudes are systematically too large

The 2000 Princeton Geography (Berggren and Jones) prints a completed gazetteer and map-instruction whose longitudes for the Mediterranean are systematically too large in the received reconstruction. In the causal graph this event weakens the driver Personal-Data Protection.

Sources: [1][2]

Read the full account

The 2000 Princeton Geography (Berggren and Jones) prints a completed gazetteer and map-instruction whose longitudes for the Mediterranean are systematically too large in the received reconstruction.

Context

The same book is a knowledge-access gain on another row. Colonial map-use of Geography is later and split where claimed.

Ptolemy’s documented role is bounded by other offices and collaborators named in the sources below.

Conventional floruit is the mid-2nd century CE in Roman Alexandria.

Who was responsible

Contribution type and responsibility level for each recorded actor — not sole-author shorthand.

  • Ptolemy

    Person

    Direct responsibility

    responsibility level 0.36 · verified

What changed

Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.

    1. FactThe Geography presents a coordinate gazetteer whose Mediterranean longitudes are systematically too large
    2. weakensDriverPersonal-Data Protection

    impact weight 0.45 · Effect from 1 September 150 · verified

Evidence

The sources behind this fact and its verification state.

Verified2 sources on file
  1. 1.Britannica — PtolemyEncyclopaedia Britannica · High credibility · verified
  2. 2.Berggren and Jones, Ptolemy's GeographyPrinceton University Press · High credibility · verified
What the sources establish

Ptolemy 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.

  1. ActorPtolemy
  2. contributed toFactThe Geography presents a coordinate gazetteer whose Mediterranean longitudes are systematically too large
  3. weakensDriverPersonal-Data Protection

Cite this page

Factrail. (2026). The Geography presents a coordinate gazetteer whose Mediterranean longitudes are systematically too large. Factrail. https://factrail.ai/facts/pto-geography-longitude-stretch

https://factrail.ai/facts/pto-geography-longitude-stretch

Accessed 16 October 2026.

By the Factrail desk · Method: how we source and score · Last reviewed

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