The 1527 fortification book is a completed military-engineering text
Dated 1 January 1527: The 1527 fortification book is a completed military-engineering text. 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
Albrecht Dürer did not operate this later page as a civil-registry autograph.
Context
Shared institutions, unnamed crews, and later editors remain in the record and do not erase a documented heading.
Albrecht Dürer Shared work with other named actors remains in the record.
Albrecht Dürer’s documented role is bounded by other offices and collaborators named in the sources below.
Conventional 1471–1528.
Who was responsible
Contribution type and responsibility level for each recorded actor — not sole-author shorthand.
Albrecht Dürer
PersonDirect responsibility
responsibility level 0.24 · verified
What changed
Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.
- FactThe 1527 fortification book is a completed military-engineering text
- strengthensDriverEnergy Security
- strengthensIndicators (4)Poverty headcount ratio at $3.00 a day (2021 PPP) (% of population)
impact weight 0.35 · Effect from 1 January 1527 · verified
Strengthens · Relationship strength 0.22 (weight 0.35 × strength 0.62)
Observed
10.4% · 10.2 above the normal line (2024)
Worse than normal7 readings, 2018–2024: fell from 11.1% to 10.4%.
Above normal = worse
Weakens · Relationship strength 0.21 (weight 0.35 × strength 0.6)
Observed
7.97% of population aged 16 years or over · 5.2 above the normal line (2025)
Worse than normal8 readings, 2018–2025: rose from 7.77% of population aged 16 years or over to 7.97% of population aged 16 years or over.
Above normal = worse
Strengthens · Relationship strength 0.17 (weight 0.35 × strength 0.5)
Observed
91.6% of population · 8.4 below the normal line (2023)
Worse than normal4 readings, 2020–2023: rose from 90.4% of population to 91.6% of population.
Above normal = better
All indicators on this path (4)
Weakens · Relationship strength 0.17 (weight 0.35 × strength 0.48)
Observed
80 Years · 2.3 below the normal line (2023)
Worse than normal6 readings, 2018–2023: rose from 79.5 Years to 80 Years.
Above normal = better
Evidence
The sources behind this fact and its verification state.
- 1.Dürer treatises — later public-domain EnglishProject Gutenberg · High credibility · verified
- 2.Cambridge Dürer and Northern Renaissance studiesCambridge University Press · High credibility · verified
What the sources establish
Albrecht Dürer 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.
- ActorAlbrecht Dürer
- contributed toFactThe 1527 fortification book is a completed military-engineering text
- strengthensDriverEnergy Security
- strengthensIndicatorPoverty headcount ratio at $3.00 a day (2021 PPP) (% of population)
Cite this page
Factrail. (2026). The 1527 fortification book is a completed military-engineering text. Factrail. https://factrail.ai/facts/adr-treatise-fortification
https://factrail.ai/facts/adr-treatise-fortification
Accessed 16 October 2026.
By the Factrail desk · Method: how we source and score · Last reviewed
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