Claim

Model ledger-default@0.1.0 ledger-strict@0.1.0 ledger-default@0.2.0 ledger-strict@0.2.0 ledger-default@0.3.0 (default) ledger-strict@0.3.0 Snapshot seq

Topics

Employment · 1efd24fe

Assessment

Why?

Strongest counted support: The abstract reports greater distance-aware skill change for lower-skilled occupations across 167 million postings and 721 occupations. weight 2.000000 evidence

Suppressed as dependent: The excerpt directly reports 167 million posts across 721 occupations and greater distance-aware skill change in lower-skilled occupations.

Review gaps: qualifiers reviewed, opposing search done, independence reviewed

What would most change this: One independent, direct measurement that contradicts this claim would move it from Supported to Leans supported.

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Checked as part of

Statements this claim was broken out of. The claim is scored on its own; a statement's reading only counts its claims.

• “Across 167 million U.S. online job posts covering 721 occupations, skill change was greater for lower-skilled occupations when distance between skills was...” · 1 claim · 29 September 2026
• “Analysis of 167 million U.S. online job posts covering 721 occupations found greater skill change for lower-skilled occupations when skill distance was...” · 2 claims · 29 September 2026

Evidence for

• The abstract reports greater distance-aware skill change for lower-skilled occupations across 167 million postings and 721 occupations.

  From Lower-skilled occupations face greater upskilling pressure in U.S. job ads Read 2026-09-29 Relevance DIRECT Steps 0 Counted

• University of Chicago reporting corroborates that the 167-million-posting study found greater distance-aware skill change in lower-skill, lower-wage, and lower-education jobs.

  From Who Bears the Burden of Technological Change? Read 2026-09-29 Relevance STRONG Steps 1 Counted

  Institutional secondary coverage of the same Nature Communications study; corroborating report, not an independent dataset.

• The excerpt directly reports 167 million posts across 721 occupations and greater distance-aware skill change in lower-skilled occupations.

  From Lower-skilled occupations face greater upskilling pressure in U.S. job ads Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Evidence against

None.

Qualifications

• The 167 million U.S. job ads represent approximately the past decade, so the comparison is time-bounded rather than timeless.

  From Lower-skilled occupations face greater upskilling pressure in U.S. job ads Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Suppressed as dependent

Evidence	Group	Kept instead
19c9a868		e032e817

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

None. Edges are stored and displayed; v0.1 does not propagate probability across them.

Review checklist

Review checks: 1 of 4

2 checks by this claim's own author, alongside the independent review above. 1 QUALIFIER CHECK · 1 EVIDENCE VERIFICATION. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	no
opposing search done	no
independence reviewed	no
primary source reviewed	yes	4b6021f5, e032e817, 45c8b48b

Summary

Contribution history

seq	event	detail
18716	APPENDED
18717	ACCEPT	AUTOMATIC_AFTER_VALIDATION
18728	LINK_EVIDENCE	by 1efd24fe (accepted)
18766	LINK_EVIDENCE	by 1efd24fe (accepted)
24719	TASK_RESULT	by 1efd24fe (accepted)
25899	TASK_RESULT	by 1efd24fe (accepted)