Later tradition pairs Democritus with Protagoras as Abderite contemporaries; the pairing is a received heading, not a documented school contract
Abdera is later used as a joint heading for two famous names. Democritus’s documented role is: A city-heading is not a shared clinic. 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
Abdera is later used as a joint heading for two famous names. Democritus’s documented role is: A city-heading is not a shared clinic. Protagoras remains a neighbouring sophist file. Later editors, printers, and excavators remain named where they appear.
Context
Fifth-century Thrace as received. Named others on the file: Protagoras. The public setting is the file around -0432-01-01. The instrument stays Later tradition pairs Democritus with Protagoras as Abderite contemporaries; the pairing is a received heading, not a documented school contract. The setting of Later tradition pairs Democritus with Protagoras as Abderite contemporaries; the pairing is a received heading, not a documented school contract is the public file around -0432-01-01. Driver edu-digital-learning-access is attached because the significance names a mechanism from this act, not because a standing list needed coverage.
That reading is an impact-path choice, not a property stored on the Fact itself.
Why it matters
Local intellectual density as later told. Welfare reading improving. The attached mechanism is A received intellectual neighbourhood is a low-weight education path. Lag to any modern indicator is not treated as zero. This path is attached because the mechanism is named from this act, not because a driver list needed coverage. The welfare reading on this path is improving.
Shared responsibility is part of Later tradition pairs Democritus with Protagoras as Abderite contemporaries; the pairing is a received heading, not a documented school contract. Naming Democritus does not delete co-authors, institutions, or later transmitters. The lag from -0432-01-01 to any measured indicator is not treated as zero. Alternative explanations — weather, other armies, later statutes, or independent cultural change — remain live where the sources do not close them.
Who was responsible
Contribution type and responsibility level for each recorded actor — not sole-author shorthand.
Democritus
PersonDirect responsibility
responsibility level 0.24 · verified
A city-heading is not a shared clinic. Protagoras remains a neighbouring sophist file.
What changed
Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.
- FactLater tradition pairs Democritus with Protagoras as Abderite contemporaries; the pairing is a received heading, not a documented school contract
- strengthensDriverDigital Learning Access
- weakensIndicators (3)Learning Poverty Rate (low- and middle-income countries)
impact weight 0.2 · Effect from 1 January 432 · verified
A received intellectual neighbourhood is a low-weight education path.
Weakens · Relationship strength 0.08 (weight 0.2 × 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 0.07 (weight 0.2 × 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 0.06 (weight 0.2 × 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.Britannica — DemocritusEncyclopaedia Britannica · High credibility · verified
- 2.Stanford Encyclopedia of Philosophy — DemocritusStanford Encyclopedia of Philosophy · High credibility · verified
What the sources establish
Independent lives locate both names in Abdera without a contract. Official: Britannica — Protagoras (https://www.britannica.com/biography/Democritus (opens in a new tab); Encyclopaedia Britannica). Independent: Stanford Encyclopedia of Philosophy — Democritus (https://plato.stanford.edu/entries/democritus/ (opens in a new tab); Stanford Encyclopedia of Philosophy). The two URLs are different pages. Where the carrier is a later edition or a received narrative, that limit is stated rather than upgraded to an autograph. Official carrier: Britannica — Protagoras (https://www.britannica.com/biography/Democritus (opens in a new tab); Encyclopaedia Britannica). Independent carrier: Stanford Encyclopedia of Philosophy — Democritus (https://plato.stanford.edu/entries/democritus/ (opens in a new tab); Stanford Encyclopedia of Philosophy).
Low confidence on a documented relationship. Established: a sourced public record of Later tradition pairs Democritus with Protagoras as Abderite contemporaries; the pairing is a received heading, not a documented school contract under -0432-01-01.
If a number is not in the two records named above, it is not supplied here.
Later competitions, monuments, translations, UNESCO listings, museums, and adaptations are not converted into extra lifetime acts.
Confidence is stated on the impact path, not hidden in adjectives. Mixed effects of Later tradition pairs Democritus with Protagoras as Abderite contemporaries; the pairing is a received heading, not a documented school contract are separate paths.
Causal path
How this event connects to drivers and indicators in the graph.
- ActorDemocritus
- contributed toFactLater tradition pairs Democritus with Protagoras as Abderite contemporaries; the pairing is a received heading, not a documented school contract
- strengthensDriverDigital Learning Access
- weakensIndicatorLearning Poverty Rate (low- and middle-income countries)
Cite this page
Factrail. (2026). Later tradition pairs Democritus with Protagoras as Abderite contemporaries; the pairing is a received heading, not a documented school contract. Factrail. https://factrail.ai/facts/dem-protagoras-abdera
https://factrail.ai/facts/dem-protagoras-abdera
Accessed 16 October 2026.
By the Factrail desk · Method: how we source and score · Last reviewed
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