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statementVerified

The Travels describe burning black stones as fuel

The setting of The Travels describe burning black stones as fuel is the public file around 1298-06-02. Shared responsibility is part of The Travels describe burning black stones as fuel. In the causal graph this event strengthens Energy Security, a driver that strengthens Poverty headcount ratio at $3.00 a day (2021 PPP) (% of population) — a worsening welfare path.

Read the full account

Later readers call this coal. It is a notice in a joint book, not a mining concession. Marco Polo's documented role is: The book reports coal. He did not mine it.

Context

Sharing the observation-as-prose with Rustichello is required. The setting of The Travels describe burning black stones as fuel is the public file around 1298-06-02.

Shared responsibility is part of The Travels describe burning black stones as fuel. Naming Marco Polo does not delete co-authors, institutions, or later transmitters. The lag from 1298-06-02 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.

Why it matters

Medium confidence. The welfare reading on this path is improving.

Who was responsible

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

  • Marco Polo

    Person

    Direct responsibility

    responsibility level 0.24 · verified

    The book reports coal. He did not mine it.

What changed

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

Evidence

The sources behind this fact and its verification state.

Verified2 sources on file
  1. 1.Project Gutenberg — The Travels of Marco Polo, public English carrierProject Gutenberg · High credibility · verified
  2. 2.Britannica — Marco Polo return c. 1295Encyclopaedia Britannica · High credibility · verified
What the sources establish

The Travels describe stones that burn like logs.

Gutenberg later English carries the passage. Britannica independently notes such technical asides. Official carrier: Project Gutenberg — Travels, black stones / coal (https://www.gutenberg.org/ebooks/10636 (opens in a new tab); Project Gutenberg). Independent carrier: Britannica — Polo observations often cited (https://www.britannica.com/biography/Marco-Polo (opens in a new tab); Encyclopaedia Britannica).

Established: the book contains a burning-stone passage. Not established: a unique mine visit dated to a day. Established: a sourced public record of The Travels describe burning black stones as fuel under 1298-06-02.

Later competitions, monuments, translations, UNESCO listings, museums, and adaptations are not converted into extra lifetime acts.

If a number is not in the two records named above, it is not supplied here.

Confidence is stated on the impact path, not hidden in adjectives. Mixed effects of The Travels describe burning black stones as fuel are separate paths.

That reading is an impact-path choice, not a property stored on the Fact itself.

Causal path

How this event connects to drivers and indicators in the graph.

  1. ActorMarco Polo
  2. contributed toFactThe Travels describe burning black stones as fuel
  3. strengthensDriverEnergy Security
  4. strengthensIndicatorPoverty headcount ratio at $3.00 a day (2021 PPP) (% of population)

Cite this page

Factrail. (2026). The Travels describe burning black stones as fuel. Factrail. https://factrail.ai/facts/mp-coal-description

https://factrail.ai/facts/mp-coal-description

Accessed 15 October 2026.

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

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