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Claim Evaluation

Every claim is stated exactly, traced to its origin, and evaluated against the best supporting and the best opposing case. Scientific claims must expose their full reasoning chain — observation, measurement, calculation, prediction, physical test, result, replication — and declare per-model predictions BEFORE the result is shown. Appeals to authority (“science says”, “experts agree”, “the math proves it”, “settled”) are not evidence. Confidence is authored, not tallied. Preserve disagreement rather than force a conclusion.

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  • Incomplete — primary sources not yet ingestedThe universal comparison scaffold below is a placeholder. Do not treat empty sections as evidence.

    Ships disappear hull-first over the horizon

    Unresolved

    As a ship recedes, its hull is occluded before its mast under conditions where the recorded refraction coefficient does not fully restore the line of sight.

    Origin: Topic acknowledged; primary sources not yet ingested into this record.

    Best supporting case

    Awaiting primary-source ingest before an authored comparison.

    Best opposing case

    Awaiting primary-source ingest before an authored comparison.

    Evidence

      Universal comparison · who claims what, and how each model explains it

      ExperimentalWho makes the claim: Maritime observers historically; disputed by observers using telephoto restoration.

      Scope: See exact wording for scope and definitions; further scoping to follow with primary sources.

      Flat / enclosed model

      What it says: Hull-first disappearance is an angular-resolution or refraction artefact and can be reversed with a stronger telescope.

      Required assumptions: standard-atmosphere, observer-elevation, instrument-calibration

      Strongest objection: Awaiting primary-source ingest.

      Falsifier: A repeatable dataset in which telescopic zoom cannot restore the hull once it has passed the predicted geometric horizon.

      Globe model

      What it says: Once the ship's hull passes below the tangent line from the observer's eye, no zoom can restore it — restoring the mast alone is expected.

      Required assumptions: standard-atmosphere, observer-elevation, instrument-calibration

      Strongest objection: Awaiting primary-source ingest.

      Falsifier: A single well-documented case where the full hull is restored at a distance sphere geometry says is impossible.

      Circular-reasoning check

      No circular-reasoning risks identified in the authored evidence chain.

      Knowledge library · claim → equation → law → assumptions

      Hidden assumptions

      — none recorded —

      Missing evidence

      • Primary sources for the flat-model explanation.
      • Primary sources for the globe-model explanation.
      • At least one reproducible physical test with independent replication.

      Contradictions

      — none recorded —

      Reproducibility

      • Not yet documented in this record.

      Confidence · not_rated

      This record is a structural placeholder. Confidence will only be rated once primary sources and reasoning chain are authored.

      Confidence is authored, not tallied. It reflects primary vs. secondary evidence, source independence, methodology, conflicts, and reproducibility — not the count of sources.

      Open in evidence graph →Browse sources