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Fix deep scan: log output even on failure, capture exit code for debugging

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daniel
2026-02-23 12:30:19 +00:00
parent 34d444aa17
commit 517c8f2cd0
71 changed files with 6824 additions and 333 deletions
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81
technologies/bronze-working.md
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@@ -31,4 +31,83 @@ Bronze working — the alloying of copper with tin — defined the Bronze Age (~
[^3]: Lechtman, H. "Arsenic Bronze: Dirty Copper or Chosen Alloy?" *Journal of Field Archaeology* 23 (1996)
[^4]: Wikiwand, "Lost-wax casting" — oldest known examples ~4550–4450 BCE, Varna Necropolis, Bulgaria
[^5]: Cline, E.H. *1177 B.C.: The Year Civilization Collapsed* (2014) — Bronze Age Collapse and trade disruption
[^6]: Heritage Daily, "Study reveals arsenical bronze production during Egypt's Middle Kingdom" (2025)
[^6]: Heritage Daily, "Study reveals arsenical bronze production during Egypt's Middle Kingdom" (2025)
---
## Review Queue
<!-- factbase:review -->
- [ ] `@q[temporal]` Line 11: "Spread to: Egypt, Indus Valley, China, Europe" - when was this true?
>
- [ ] `@q[temporal]` Line 15: "Arsenical bronze (copper + arsenic) preceded tin-bronze and was used widely i..." - when was this true?
>
- [ ] `@q[temporal]` Line 16: "Tin was scarce; long-distance trade networks developed to source it (Cornwall..." - when was this true?
>
- [ ] `@q[temporal]` Line 19: "Disruption of tin trade routes is considered a contributing factor to the Bro..." - when was this true?
>
- [ ] `@q[conflict]` Line 8: "Period: ~3300–1200 BCE (Bronze Age) @t[~3300 BCE..1200 BCE]" @t[-3300..-3300] overlaps with "Composition: ~88% copper, ~12% tin (tin-bronze); earlier arsenical bronze use..." @t[-3300..-3300] - were both true simultaneously? (line:9) [pattern:unknown]
>
- [ ] `@q[conflict]` Line 8: "Period: ~3300–1200 BCE (Bronze Age) @t[~3300 BCE..1200 BCE]" @t[-3300..-3300] overlaps with "Earliest tin-bronze: Mesopotamia and the Caucasus, ~3300 BCE @t[~3300 BCE]" @t[-3300..-3300] - were both true simultaneously? (line:10) [pattern:unknown]
>
- [ ] `@q[conflict]` Line 9: "Composition: ~88% copper, ~12% tin (tin-bronze); earlier arsenical bronze use..." @t[-3300..-3300] overlaps with "Earliest tin-bronze: Mesopotamia and the Caucasus, ~3300 BCE @t[~3300 BCE]" @t[-3300..-3300] - were both true simultaneously? (line:10) [pattern:unknown]
>
- [ ] `@q[conflict]` Line 22: "Superior weapons: Swords, spearheads, armor @t[~3300 BCE..1200 BCE]" @t[-3300..-3300] overlaps with "Agricultural tools: Plows, sickles @t[~3300 BCE..1200 BCE]" @t[-3300..-3300] - were both true simultaneously? (line:23) [pattern:unknown]
>
- [ ] `@q[conflict]` Line 22: "Superior weapons: Swords, spearheads, armor @t[~3300 BCE..1200 BCE]" @t[-3300..-3300] overlaps with "Monumental art: Statuary, ritual vessels @t[~3300 BCE..1200 BCE]" @t[-3300..-3300] - were both true simultaneously? (line:24) [pattern:unknown]
>
- [ ] `@q[conflict]` Line 22: "Superior weapons: Swords, spearheads, armor @t[~3300 BCE..1200 BCE]" @t[-3300..-3300] overlaps with "Drove long-distance trade networks for tin and copper @t[~3300 BCE..1200 BCE]" @t[-3300..-3300] - were both true simultaneously? (line:25) [pattern:unknown]
>
- [ ] `@q[conflict]` Line 23: "Agricultural tools: Plows, sickles @t[~3300 BCE..1200 BCE]" @t[-3300..-3300] overlaps with "Monumental art: Statuary, ritual vessels @t[~3300 BCE..1200 BCE]" @t[-3300..-3300] - were both true simultaneously? (line:24) [pattern:unknown]
>
- [ ] `@q[conflict]` Line 23: "Agricultural tools: Plows, sickles @t[~3300 BCE..1200 BCE]" @t[-3300..-3300] overlaps with "Drove long-distance trade networks for tin and copper @t[~3300 BCE..1200 BCE]" @t[-3300..-3300] - were both true simultaneously? (line:25) [pattern:unknown]
>
- [ ] `@q[conflict]` Line 24: "Monumental art: Statuary, ritual vessels @t[~3300 BCE..1200 BCE]" @t[-3300..-3300] overlaps with "Drove long-distance trade networks for tin and copper @t[~3300 BCE..1200 BCE]" @t[-3300..-3300] - were both true simultaneously? (line:25) [pattern:unknown]
>
- [ ] `@q[missing]` Line 8: "Period: ~3300–1200 BCE (Bronze Age) @t[~3300 BCE..1200 BCE]" - what is the source?
>
- [ ] `@q[missing]` Line 9: "Composition: ~88% copper, ~12% tin (tin-bronze); earlier arsenical bronze use..." - what is the source?
>
- [ ] `@q[missing]` Line 10: "Earliest tin-bronze: Mesopotamia and the Caucasus, ~3300 BCE @t[~3300 BCE]" - what is the source?
>
- [ ] `@q[missing]` Line 11: "Spread to: Egypt, Indus Valley, China, Europe" - what is the source?
>
- [ ] `@q[missing]` Line 14: "Copper smelting preceded bronze by ~2,000 years (Chalcolithic period) @t[~530..." - what is the source?
>
- [ ] `@q[missing]` Line 22: "Superior weapons: Swords, spearheads, armor @t[~3300 BCE..1200 BCE]" - what is the source?
>
- [ ] `@q[missing]` Line 23: "Agricultural tools: Plows, sickles @t[~3300 BCE..1200 BCE]" - what is the source?
>
- [ ] `@q[missing]` Line 24: "Monumental art: Statuary, ritual vessels @t[~3300 BCE..1200 BCE]" - what is the source?
>
- [ ] `@q[missing]` Line 25: "Drove long-distance trade networks for tin and copper @t[~3300 BCE..1200 BCE]" - what is the source?
>
- [ ] `@q[stale]` Line 15: "Arsenical bronze (copper + arsenic) preceded tin-bronze and was used widely i..." - Lechtman source from 1996 may be outdated, is this still accurate?
>
- [ ] `@q[stale]` Line 16: "Tin was scarce; long-distance trade networks developed to source it (Cornwall..." - Muhly source from 1985 may be outdated, is this still accurate?
>
- [ ] `@q[stale]` Line 19: "Disruption of tin trade routes is considered a contributing factor to the Bro..." - Cline source from 1177 may be outdated, is this still accurate?
>

66
technologies/iron-smelting.md
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@@ -28,4 +28,68 @@ The development of iron smelting technology (~1200 BCE onward) ushered in the Ir
[^1]: Waldbaum, J. *From Bronze to Iron* (1978)
[^2]: Wagner, D. *Iron and Steel in Ancient China* (Brill, 1993)
[^3]: Alpern, S.B. "Did They or Didn't They Invent It? Iron in Sub-Saharan Africa" *History in Africa* 32 (2005); Wikipedia, "Iron metallurgy in Africa"
[^4]: Srinivasan, S. & Ranganathan, S. *India's Legendary Wootz Steel* (National Institute of Advanced Studies, 2004); Wikipedia, "Wootz steel"
[^4]: Srinivasan, S. & Ranganathan, S. *India's Legendary Wootz Steel* (National Institute of Advanced Studies, 2004); Wikipedia, "Wootz steel"
---
## Review Queue
<!-- factbase:review -->
- [ ] `@q[temporal]` Line 11: "Key innovation: Carburization (adding carbon to create steel) [^1]" - when was this true?
>
- [ ] `@q[temporal]` Line 15: "Hittites may have been early innovators of iron smelting, though evidence is ..." - when was this true?
>
- [ ] `@q[temporal]` Line 16: "Iron became widespread after the Bronze Age Collapse disrupted tin trade rout..." - when was this true?
>
- [ ] `@q[temporal]` Line 22: "Democratized access to metal tools (iron ore is abundant, unlike tin) [^1]" - when was this true?
>
- [ ] `@q[temporal]` Line 23: "Improved agricultural productivity (iron plows) [^1]" - when was this true?
>
- [ ] `@q[temporal]` Line 24: "Transformed warfare (iron weapons, armor) [^1]" - when was this true?
>
- [ ] `@q[temporal]` Line 25: "Enabled deforestation and land clearing at scale [^1]" - when was this true?
>
- [ ] `@q[conflict]` Line 8: "Transition period: ~1200–800 BCE (varies by region) @t[1200 BCE..800 BCE] [^1]" @t[-1200..-0800] overlaps with "Widespread adoption: After the Bronze Age Collapse (~1200 BCE) @t[~1200 BCE] ..." @t[-1200..-1200] - were both true simultaneously? (line:10) [pattern:unknown]
>
- [ ] `@q[conflict]` Line 17: "Chinese independently developed cast iron by ~500 BCE (bloomery iron in the W..." @t[-0500..-0500] overlaps with "South India developed wootz steel (crucible steel) by the mid-1st millennium ..." @t[-0500..-0500] - were both true simultaneously? (line:19) [pattern:unknown]
>
- [ ] `@q[stale]` Line 9: "Earliest iron smelting: Anatolia (Hittites), ~1500 BCE (limited use) @t[~1500..." - Waldbaum source from 1978 may be outdated, is this still accurate?
>
- [ ] `@q[stale]` Line 10: "Widespread adoption: After the Bronze Age Collapse (~1200 BCE) @t[~1200 BCE] ..." - Waldbaum source from 1978 may be outdated, is this still accurate?
>
- [ ] `@q[stale]` Line 11: "Key innovation: Carburization (adding carbon to create steel) [^1]" - Waldbaum source from 1978 may be outdated, is this still accurate?
>
- [ ] `@q[stale]` Line 14: "Earliest surviving iron artifacts (4th millennium BCE, Egypt) were made from ..." - Waldbaum source from 1978 may be outdated, is this still accurate?
>
- [ ] `@q[stale]` Line 15: "Hittites may have been early innovators of iron smelting, though evidence is ..." - Waldbaum source from 1978 may be outdated, is this still accurate?
>
- [ ] `@q[stale]` Line 16: "Iron became widespread after the Bronze Age Collapse disrupted tin trade rout..." - Waldbaum source from 1978 may be outdated, is this still accurate?
>
- [ ] `@q[stale]` Line 17: "Chinese independently developed cast iron by ~500 BCE (bloomery iron in the W..." - Wagner source from 1993 may be outdated, is this still accurate?
>
- [ ] `@q[stale]` Line 22: "Democratized access to metal tools (iron ore is abundant, unlike tin) [^1]" - Waldbaum source from 1978 may be outdated, is this still accurate?
>
- [ ] `@q[stale]` Line 23: "Improved agricultural productivity (iron plows) [^1]" - Waldbaum source from 1978 may be outdated, is this still accurate?
>
- [ ] `@q[stale]` Line 24: "Transformed warfare (iron weapons, armor) [^1]" - Waldbaum source from 1978 may be outdated, is this still accurate?
>
- [ ] `@q[stale]` Line 25: "Enabled deforestation and land clearing at scale [^1]" - Waldbaum source from 1978 may be outdated, is this still accurate?
>

72
technologies/roman-aqueducts.md
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@@ -30,4 +30,74 @@ Roman aqueducts were engineering marvels that transported water over long distan
[^1]: Frontinus, *De Aquaeductu Urbis Romae* (~97 CE)
[^2]: Hodge, A.T. *Roman Aqueducts and Water Supply* (2002)
[^3]: Wikipedia, "Roman aqueduct" — https://en.wikipedia.org/wiki/Roman_aqueduct
[^4]: El País, "Age of Segovia aqueduct revised after discovery of ancient coin" (2016) — https://english.elpais.com/elpais/2016/11/01/inenglish/1477997248_304960.html
[^4]: El País, "Age of Segovia aqueduct revised after discovery of ancient coin" (2016) — https://english.elpais.com/elpais/2016/11/01/inenglish/1477997248_304960.html
---
## Review Queue
<!-- factbase:review -->
- [ ] `@q[temporal]` Line 11: "Daily water delivery to Rome: ~1 million cubic meters [^1]" - when was this true?
>
- [ ] `@q[temporal]` Line 16: "Mostly underground channels; iconic arched bridges were only ~5% of total length" - when was this true?
>
- [ ] `@q[temporal]` Line 17: "Used *opus caementicium* (Roman concrete) and lead pipes (*fistulae*)" - when was this true?
>
- [ ] `@q[temporal]` Line 18: "Settling tanks and distribution castella regulated flow" - when was this true?
>
- [ ] `@q[temporal]` Line 19: "Water also supported mining operations, milling, farms, and gardens [^3]" - when was this true?
>
- [ ] `@q[temporal]` Line 9: Malformed temporal tag @t[-312..226 CE] — see docs for valid syntax
>
- [ ] `@q[temporal]` Line 10: Malformed temporal tag @t[-312..226 CE] — see docs for valid syntax
>
- [ ] `@q[temporal]` Line 12: Malformed temporal tag @t[=226 CE] — see docs for valid syntax
>
- [ ] `@q[temporal]` Line 15: Malformed temporal tag @t[-312..476 CE] — see docs for valid syntax
>
- [ ] `@q[temporal]` Line 24: Malformed temporal tag @t[38 CE..52 CE] — see docs for valid syntax
>
- [ ] `@q[temporal]` Line 26: Malformed temporal tag @t[~98 CE..116 CE] — see docs for valid syntax
>
- [ ] `@q[temporal]` Line 27: Malformed temporal tag @t[=226 CE] — see docs for valid syntax
>
- [ ] `@q[missing]` Line 8: "First Roman aqueduct: Aqua Appia (312 BCE) @t[=312 BCE]" - what is the source?
>
- [ ] `@q[missing]` Line 9: "Total aqueducts serving Rome: 11 (by 226 CE) @t[312 BCE..226 CE]" - what is the source?
>
- [ ] `@q[missing]` Line 10: "Combined length: ~500 km (mostly underground) @t[312 BCE..226 CE]" - what is the source?
>
- [ ] `@q[missing]` Line 12: "Last aqueduct built for Rome: Aqua Alexandrina (226 CE) @t[=226 CE]" - what is the source?
>
- [ ] `@q[missing]` Line 15: "Gravity-fed: Maintained a consistent gradient (~1:200 to 1:4800) @t[312 BCE....." - what is the source?
>
- [ ] `@q[missing]` Line 16: "Mostly underground channels; iconic arched bridges were only ~5% of total length" - what is the source?
>
- [ ] `@q[missing]` Line 17: "Used *opus caementicium* (Roman concrete) and lead pipes (*fistulae*)" - what is the source?
>
- [ ] `@q[missing]` Line 18: "Settling tanks and distribution castella regulated flow" - what is the source?
>
- [ ] `@q[stale]` Line 25: "Pont du Gard (France, ~19 BCE): Three-tiered bridge, 49 m high @t[~19 BCE] [^2]" - Hodge source from 2002 may be outdated, is this still accurate?
>
- [ ] `@q[stale]` Line 26: "Aqueduct of Segovia (Spain, late 1st–early 2nd century CE): Still standing;..." - El País source from 2016 may be outdated, is this still accurate?
>

93
technologies/roman-concrete.md
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@@ -37,4 +37,95 @@ In harbor structures, seawater seeping through the concrete dissolved volcanic m
[^2]: Lancaster, L. *Concrete Vaulted Construction in Imperial Rome* (Cambridge, 2005)
[^3]: Masic, A. et al. "Hot mixing: Mechanistic insights into the durability of ancient Roman concrete" *Science Advances* 9 (2023) doi:10.1126/sciadv.add1602
[^4]: Jackson, M. et al. "Phillipsite and Al-tobermorite mineral cements produced through low-temperature water-rock reactions in Roman marine concrete" *American Mineralogist* 102 (2017)
[^5]: Brandon, C. et al. *Building for Eternity: The History and Technology of Roman Concrete Engineering in the Sea* (Oxbow Books, 2014)
[^5]: Brandon, C. et al. *Building for Eternity: The History and Technology of Roman Concrete Engineering in the Sea* (Oxbow Books, 2014)
---
## Review Queue
<!-- factbase:review -->
- [ ] `@q[temporal]` Line 9: "Composition: Volcanic ash (pozzolana), lime, seawater, and rock aggregate" - when was this true?
>
- [ ] `@q[temporal]` Line 10: "Key innovation: Pozzolanic reaction with volcanic ash" - when was this true?
>
- [ ] `@q[temporal]` Line 11: "Volcanic ash source: Primarily from Pozzuoli (Bay of Naples) and the Campi Fl..." - when was this true?
>
- [ ] `@q[temporal]` Line 15: "Increased in strength over time through mineral crystallization [^1]" - when was this true?
>
- [ ] `@q[temporal]` Line 16: "Could be molded into complex shapes (domes, vaults)" - when was this true?
>
- [ ] `@q[temporal]` Line 17: "Less tensile strength than modern concrete but superior durability" - when was this true?
>
- [ ] `@q[temporal]` Line 31: "Harbor at Puteoli" - when was this true?
>
- [ ] `@q[temporal]` Line 5: Malformed temporal tag @t[~-300..476 CE] — see docs for valid syntax
>
- [ ] `@q[temporal]` Line 8: Malformed temporal tag @t[~-300..476 CE] — see docs for valid syntax
>
- [ ] `@q[temporal]` Line 14: Malformed temporal tag @t[~-300..476 CE] — see docs for valid syntax
>
- [ ] `@q[temporal]` Line 28: Malformed temporal tag @t[~125 CE] — see docs for valid syntax
>
- [ ] `@q[temporal]` Line 29: Malformed temporal tag @t[=80 CE] — see docs for valid syntax
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- [ ] `@q[temporal]` Line 30: Malformed temporal tag @t[~-22..~-10] — see docs for valid syntax
>
- [ ] `@q[temporal]` Line 32: Malformed temporal tag @t[~212 CE..~217 CE] — see docs for valid syntax
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- [ ] `@q[temporal]` Line 33: Malformed temporal tag @t[~298 CE..~306 CE] — see docs for valid syntax
>
- [ ] `@q[missing]` Line 8: "Period of use: ~3rd century BCE – 5th century CE @t[~300 BCE..476 CE]" - what is the source?
>
- [ ] `@q[missing]` Line 9: "Composition: Volcanic ash (pozzolana), lime, seawater, and rock aggregate" - what is the source?
>
- [ ] `@q[missing]` Line 10: "Key innovation: Pozzolanic reaction with volcanic ash" - what is the source?
>
- [ ] `@q[missing]` Line 11: "Volcanic ash source: Primarily from Pozzuoli (Bay of Naples) and the Campi Fl..." - what is the source?
>
- [ ] `@q[missing]` Line 14: "Set underwater (hydraulic cement) — critical for harbor construction @t[~30..." - what is the source?
>
- [ ] `@q[missing]` Line 16: "Could be molded into complex shapes (domes, vaults)" - what is the source?
>
- [ ] `@q[missing]` Line 17: "Less tensile strength than modern concrete but superior durability" - what is the source?
>
- [ ] `@q[missing]` Line 28: "Pantheon dome (~125 CE) @t[~125 CE]: 43.3 m span, largest unreinforced concre..." - what is the source?
>
- [ ] `@q[missing]` Line 29: "Colosseum (~80 CE) @t[=80 CE]: Concrete core with travertine facing" - what is the source?
>
- [ ] `@q[missing]` Line 31: "Harbor at Puteoli" - what is the source?
>
- [ ] `@q[stale]` Line 15: "Increased in strength over time through mineral crystallization [^1]" - Jackson source from 2014 may be outdated, is this still accurate?
>
- [ ] `@q[stale]` Line 30: "Harbor of Sebastos, Caesarea Maritima (~22–10 BCE) @t[~22 BCE..~10 BCE]: Bu..." - Brandon source from 2014 may be outdated, is this still accurate?
>
- [ ] `@q[stale]` Line 32: "Baths of Caracalla (~212–217 CE) @t[~212 CE..~217 CE] [^2]" - Lancaster source from 2005 may be outdated, is this still accurate?
>
- [ ] `@q[stale]` Line 33: "Baths of Diocletian (~298–306 CE) @t[~298 CE..~306 CE] [^2]" - Lancaster source from 2005 may be outdated, is this still accurate?
>

75
technologies/roman-roads.md
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@@ -33,4 +33,77 @@ The Roman road network was one of the greatest engineering achievements of the a
[^3]: Wikipedia, "Roman roads," https://en.wikipedia.org/wiki/Roman_roads
[^4]: LacusCurtius, "Via Appia," *Encyclopaedia Britannica* (1911 ed.), https://penelope.uchicago.edu/Thayer/E/Gazetteer/Periods/Roman/Topics/Engineering/roads/Appia/Britannica_1911*.html
[^5]: Wikipedia, "Via Augusta," https://en.wikipedia.org/wiki/Via_Augusta
[^6]: LacusCurtius, "Milliarium Aureum," Platner & Ashby (1929), https://penelope.uchicago.edu/Thayer/E/Gazetteer/Places/Europe/Italy/Lazio/Roma/Rome/_Texts/PLATOP*/Milliarium_Aureum.html
[^6]: LacusCurtius, "Milliarium Aureum," Platner & Ashby (1929), https://penelope.uchicago.edu/Thayer/E/Gazetteer/Places/Europe/Italy/Lazio/Roma/Rome/_Texts/PLATOP*/Milliarium_Aureum.html
---
## Review Queue
<!-- factbase:review -->
- [ ] `@q[temporal]` Line 8: "Total network: ~400,000 km (80,000 km paved) [^1] [^2]" - when was this true?
>
- [ ] `@q[temporal]` Line 10: "Construction: Layered system of gravel, sand, and paving stones [^1]" - when was this true?
>
- [ ] `@q[temporal]` Line 11: "Maintained by: State and local authorities" - when was this true?
>
- [ ] `@q[temporal]` Line 14: "Surveyed in straight lines where possible (*agrimensor* surveyors)" - when was this true?
>
- [ ] `@q[temporal]` Line 15: "Layered construction: Foundation (*statumen*), gravel (*rudus*), concrete (*n..." - when was this true?
>
- [ ] `@q[temporal]` Line 16: "Drainage ditches on both sides" - when was this true?
>
- [ ] `@q[temporal]` Line 17: "Milestones (*miliaria*) every Roman mile (~1.48 km)" - when was this true?
>
- [ ] `@q[temporal]` Line 27: ""All roads lead to Rome" — distances across the empire were measured from t..." - when was this true?
>
- [ ] `@q[temporal]` Line 28: "Many modern European roads follow Roman alignments" - when was this true?
>
- [ ] `@q[temporal]` Line 21: Malformed temporal tag @t[~-146..~-120] — see docs for valid syntax
>
- [ ] `@q[temporal]` Line 22: Malformed temporal tag @t[~-8..~-2] — see docs for valid syntax
>
- [ ] `@q[temporal]` Line 23: Malformed temporal tag @t[~43 CE..410 CE] — see docs for valid syntax
>
- [ ] `@q[missing]` Line 9: "First major road: Via Appia (312 BCE), Rome to Capua @t[=312 BCE]" - what is the source?
>
- [ ] `@q[missing]` Line 11: "Maintained by: State and local authorities" - what is the source?
>
- [ ] `@q[missing]` Line 14: "Surveyed in straight lines where possible (*agrimensor* surveyors)" - what is the source?
>
- [ ] `@q[missing]` Line 16: "Drainage ditches on both sides" - what is the source?
>
- [ ] `@q[missing]` Line 17: "Milestones (*miliaria*) every Roman mile (~1.48 km)" - what is the source?
>
- [ ] `@q[missing]` Line 27: ""All roads lead to Rome" — distances across the empire were measured from t..." - what is the source?
>
- [ ] `@q[missing]` Line 28: "Many modern European roads follow Roman alignments" - what is the source?
>
- [ ] `@q[stale]` Line 8: "Total network: ~400,000 km (80,000 km paved) [^1] [^2]" - Laurence source from 1999 may be outdated, is this still accurate?
>
- [ ] `@q[stale]` Line 10: "Construction: Layered system of gravel, sand, and paving stones [^1]" - Laurence source from 1999 may be outdated, is this still accurate?
>
- [ ] `@q[stale]` Line 15: "Layered construction: Foundation (*statumen*), gravel (*rudus*), concrete (*n..." - Laurence source from 1999 may be outdated, is this still accurate?
>
- [ ] `@q[stale]` Line 23: "Stane Street, Watling Street: Roman Britain, constructed after the invasion o..." - Chevallier source from 1976 may be outdated, is this still accurate?
>