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Technology and Engineering Atlas

Open Questions

Things this atlas does not know. Each entry is a question that specialists have posed and not settled, recorded with what would actually resolve it and which expertise the answer needs.

These are kept deliberately, rather than quietly omitted. An atlas that shows only what it is sure of implies a confidence it has not earned, and the gaps are often where the interesting work is. Several sit exactly where two fields fail to meet: identifying the hyssop of the Hebrew Bible needs a botanist and a philologist of Biblical Hebrew, and neither one settles it alone.

Grouped by the shape of the gap rather than its subject: what sort of thing is unresolved.

Showing 21 to 38 of 38 open questions, page 2 of 2.

attribution 27

Who said or wrote or made something, where the record is incomplete.

Mining Engineering Who deserves credit for inventing the miners' safety lamp: Humphry Davy, honored by the Royal Society in 1815, or George Stephenson, who devised his own lamp independently the same year?

Open Mining Engineering

Why It Is Open Humphry Davy presented his safety lamp design to the Royal Society in London on 9 November 1815 and was awarded the society's Rumford Medal and two thousand pounds worth of silver. Engine-wright George Stephenson demonstrated his own, independently devised safety lamp down Killingworth Colliery a month before Davy's presentation, but his lamp was not developed and publicly credited until after Davy's paper, leading Davy to accuse him of theft.

What Would Settle It An 1833 House of Commons committee found that Stephenson had an equal claim to inventing the safety lamp, yet Davy went to his grave insisting Stephenson had stolen his idea; no single verdict has ever definitively settled priority between the two men.

Expertise Needed History of Technology

Question posed in Davy Lamp (Wikipedia), Wikipedia contributors, History section, Stephenson priority dispute paragraph.

Ocean Engineering Grand Lake St. Marys or Summerland: which really counts as the first offshore oil well?

Open Ocean Engineering

Why It Is Open Historians credit Grand Lake St. Marys in Ohio with the first submerged oil wells around 1891, drilled from platforms on piles into fresh water, five years before the Summerland field in Santa Barbara County, California drilled the first submerged wells in salt water in 1896. Whether ocean engineering should date the first true offshore well to the earlier freshwater lake wells or reserve the title for the first saltwater, open-ocean wells is a definitional choice historians have not settled.

What Would Settle It A documented contemporary industry or engineering definition of offshore drilling from the 1890s that explicitly includes or excludes freshwater lake wells would settle whether Grand Lake St. Marys or Summerland holds true priority.

Expertise Needed History of petroleum and ocean engineering

Question posed in Offshore Drilling (Wikipedia), History section, opening sentences.

Biological Engineering Berg, Lobban, or Cohen and Boyer: who deserves primary credit for recombinant DNA?

Open Biological Engineering

Why It Is Open Peter Lobban first proposed the idea of recombinant DNA as a Stanford graduate student, Paul Berg's laboratory produced the first recombinant DNA molecule around 1971-72 and Berg later won a Nobel Prize partly for this work, yet the 1974 United States patent on recombinant DNA technology names only Stanley Cohen and Herbert Boyer as inventors, for a related but distinct gene-cloning technique published in 1973.

What Would Settle It A settled historical or legal consensus on whether patent inventorship (Cohen and Boyer's cloning technique) or first scientific priority (Lobban's proposal and Berg's molecule) is the correct measure of who invented recombinant DNA would resolve the dispute.

Expertise Needed History of biotechnology and biological engineering

Question posed in Recombinant DNA (Wikipedia), History section, first paragraph.

Mechatronics Engineering Parsons or MIT: who really invented numerical control?

Open Mechatronics Engineering

Why It Is Open John T. Parsons holds the 1958 patent for numerical control and was the sole inductee, without his own chief engineer Frank Stulen, into the National Inventors Hall of Fame for the invention, yet the MIT Servomechanisms Laboratory transformed his original plunge-cutting concept into the three-axis continuous-path control and the programming language that made numerical control practical, and historians differ on how much of the credit belongs to Parsons alone.

What Would Settle It A detailed technical comparison of Parsons' original 1949 proposal against MIT's delivered 1952 servomechanism system, establishing how much of the patented invention originated with Parsons versus MIT's own engineers, would settle the credit question.

Expertise Needed History of mechatronics and control engineering

Question posed in John T. Parsons (Wikipedia), final paragraph, awards and honors.

Military Engineering De Mole or Tritton and Wilson: who deserves credit for inventing the tank?

Open Military Engineering

Why It Is Open Lancelot de Mole submitted a tracked armoured vehicle design to the British War Office in 1912, four years before tanks first saw combat, and a 1919 Royal Commission found his invention had anticipated and in some respects surpassed the design actually used in 1916, yet awarded the official credit and payment to William Tritton and Walter Wilson because de Mole's rejected design had no proven causal influence on their independent development.

What Would Settle It Documentary proof that de Mole's 1912 or 1914 submissions were actually seen and used by the Landships Committee or by Tritton and Wilson would overturn the Royal Commission's finding of no causal connection.

Expertise Needed History of military engineering

Question posed in Lancelot de Mole (Wikipedia), Royal Commission on Awards to Inventors section, quoting the 1919 Report.

Architectural Engineering Coignet, Wilkinson, or Monier: who invented reinforced concrete?

Open Architectural Engineering

Why It Is Open French builder François Coignet built the first iron-reinforced concrete structure in 1853-55, English builder William Wilkinson reinforced concrete with a documented understanding of tensile stress in 1854, and French gardener Joseph Monier patented reinforcing techniques from 1867 onward that became the ones most widely licensed and developed afterward, so historians differ on whether priority belongs to the earliest build, the earliest tensile understanding, or the most influential patent.

What Would Settle It A surviving technical record proving which of Coignet, Wilkinson or Monier first understood and deliberately exploited concrete's tensile weakness, rather than simply embedding metal for another reason, would settle whose work counts as the true invention.

Expertise Needed History of structural and architectural engineering

Question posed in Reinforced Concrete (Wikipedia), History section, opening paragraphs.

Acoustical Engineering Scott de Martinville or Edison: who really invented sound recording?

Open Acoustical Engineering

Why It Is Open Edouard-Leon Scott de Martinville patented the phonautograph in 1857 and recorded the human voice as early as 1857-1860, nearly two decades before Thomas Edison's 1877 phonograph, but Scott's device could not play back what it recorded, while Edison's could both record and reproduce sound, so historians differ on whether true invention of sound recording belongs to the first to capture sound at all or the first to make it audible again.

What Would Settle It A settled definition of sound recording from the acoustical engineering discipline itself, stating whether playback capability is a defining requirement, would resolve which of the two deserves the title.

Expertise Needed History of acoustical engineering

Question posed in Phonautograph (Wikipedia), Rediscovery section.

dating 3

When something happened, where the sources disagree or are silent.

Geological Engineering What year did geological engineering originate as a distinct discipline?

Open Geological Engineering

Why It Is Open Wikipedia states the term geological engineering was not coined until the 19th century and ties the field's formal creation to a run of dam failures in the 1950s and 1960s, but names no single founding year for either the term or the discipline.

What Would Settle It A history-of-engineering source naming the specific year the term geological engineering was first used, or the specific year the first dedicated university program or professional body was established.

Expertise Needed History of engineering

Question posed in Geological Engineering (Wikipedia), Wikipedia contributors, History section, term coined in the 19th century paragraph.

Beryllium Copper In what specific year was beryllium copper (copper-beryllium age-hardening alloy) first developed or patented?

Open Beryllium Copper

Why It Is Open Every freely fetchable raw source consulted 2026-09-10 (Wikipedia Beryllium copper, Wikipedia Beryllium, beryllium.eu Facts and Figures) places the alloy only in the 1920s decade, with no source giving a single confirmed exact year; Britannica, ScienceDirect and Thomasnet refused automated fetch and briandcolwell.com failed on a TLS handshake before any content loaded.

What Would Settle It A metallurgical history source (a patent record naming the original filer and filing year, or a peer-reviewed materials-science history article) that names the specific year copper-beryllium age-hardening was first patented or first used commercially, distinct from the unrelated 1928 Corson-bronze (copper-nickel-silicon) patent.

Expertise Needed History of Metallurgy

Question posed in Beryllium Copper (Wikipedia), Full article (confirmed live 2026-09-10 against the raw wikitext: no History section, no origin date stated anywhere in the article).

Trebuchet What is the precise date and place of the trebuchet's invention, for either the traction or counterweight type?

Open Trebuchet

Why It Is Open The traction trebuchet is dated only to "by the 4th century BC" in China with no named inventor, and the later counterweight trebuchet only to "around the 12th century" in Christian and Muslim lands around the Mediterranean; no primary source in this research gives an exact year or a single inventor for either device.

What Would Settle It A dated primary text or archaeological find establishing a specific year and place for the first traction trebuchet in China, or for the first counterweight trebuchet, would resolve this.

Expertise Needed History of military technology

Question posed in Trebuchet (Wikipedia), Lead paragraph 2-3.

etymology 2

What a word carried in its own language, before it was rendered into another.

Chemical Engineering When and by whom was the term "chemical engineering" actually coined: an 1839 reference cited by James F. Donnelly, George E. Davis's later claimed coinage, or the approximately 1890 date given by The History of Science in the United States: An Encyclopedia?

Open Chemical Engineering

Why It Is Open Wikipedia's own chemical engineering article records three competing accounts in one paragraph: "A 1996 article cites James F. Donnelly for mentioning an 1839 reference to chemical engineering...George E. Davis...was credited with having coined the term...The History of Science in United States: An Encyclopedia puts the use of the term around 1890." The sources disagree with each other and the article does not adjudicate between them.

What Would Settle It A dedicated etymological study tracing first use of the exact phrase "chemical engineering" in primary 19th-century sources, rather than secondary encyclopedic accounts that already disagree.

Question posed in Chemical Engineering (Wikipedia), Wikipedia contributors, Etymology section.

Robotics Engineering Who actually coined the word robot: Karel Čapek, who used it in his 1920 play R.U.R., or his brother Josef Čapek, whom Karel later credited as the actual originator of the word?

Open Robotics Engineering

Why It Is Open Karel Capek popularized robot in R.U.R. and is popularly credited with coining it, but in a 1933 letter responding to an Oxford English Dictionary etymology inquiry, Karel himself stated that his brother Josef suggested the word, derived from the Czech word robota, meaning forced labor.

What Would Settle It Corroborating primary correspondence or contemporaneous documentation, beyond the account Karel gave later, confirming the specific nature of the contribution Josef made.

Expertise Needed History of Technology

Question posed in Robot (Wikipedia), Wikipedia contributors, Wikipedia, Robot, Etymology section.

Historicity 2

Whether a person or event is historical, legendary, or a composite of both.

Aerospace Engineering Did Gustave Whitehead achieve powered, controlled flight near Bridgeport, Connecticut in 1901-1902, before the Wright brothers' 1903 flights at Kitty Hawk?

Open Aerospace Engineering

Why It Is Open Wikipedia's Gustave Whitehead article states "controversy surrounds published accounts and Whitehead's own claims that he flew a powered machine successfully several times in 1901 and 1902, predating the first flights by the Wright brothers in 1903." Connecticut's legislature officially recognized Whitehead as "Father of Connecticut Aviation" in 1968; North Carolina's General Assembly passed a 1985 resolution giving the claim "no credence." Mainstream aviation historians side with the Wright brothers, but the dispute remains live enough to have produced competing state resolutions decades apart.

What Would Settle It Physical evidence (a surviving aircraft, verifiable photograph, or independently corroborated eyewitness record) of a genuinely powered, controlled 1901-1902 Whitehead flight, which mainstream aviation historians say does not exist.

Question posed in Gustave Whitehead (Wikipedia), Wikipedia contributors, Lead section, controversy statement.

Computer Engineering Was the Atanasoff-Berry Computer (1939-1942) the first electronic digital computer, given that it was neither programmable nor Turing-complete?

Open Computer Engineering

Why It Is Open Wikipedia's Atanasoff-Berry Computer article states the ABC "was the first automatic electronic digital computer...The ABC's priority is debated among historians of computer technology, because it was neither programmable, nor Turing-complete." A 1973 US federal court ruling (Honeywell v. Sperry Rand) held the ENIAC patent invalid because ENIAC derived key ideas from the ABC, but that legal ruling settled a patent case, not the historians' definitional debate over what should count as the "first" electronic digital computer.

What Would Settle It A settled, family-wide definitional standard for what counts as a "computer" (mere electronic arithmetic vs. programmability vs. Turing-completeness) applied consistently across every early-computing priority claim, which does not yet exist in the historical literature.

Question posed in Atanasoff-Berry Computer (Wikipedia), Wikipedia contributors, Lead section, priority-debate sentence.

Transmission 2

Recorded as unresolved.

Movable Type Printing Did Knowledge of Chinese and Korean Movable Type Reach Johannes Gutenberg Before His Independent Invention?

Open Movable Type Printing

Why It Is Open Bi Sheng invented ceramic movable type in Song China between 1039 and 1048, and movable metal type was in use in Korea by the fourteenth century, both centuries before Johannes Gutenberg's metal type and mechanical press appeared in Mainz around 1440. No direct documentary link places knowledge of the Asian systems in Gutenberg's hands, and historians remain divided between an independent-invention account and a diffusion account carried along Mongol-era Eurasian trade and diplomatic contacts.

What Would Settle It A documented account, correspondence, or artifact placing knowledge of Chinese or Korean movable type printing in Europe, or specifically before Gutenberg, before his circa 1440 press; none has surfaced in the sources consulted for this entry.

Expertise Needed History of technology

Question posed in Bi Sheng (Wikipedia), Wikipedia contributors, Body section.

The Magnetic Compass When did the Chinese magnetic compass move from a tool of divination and orientation to genuine sea navigation, and did the practice reach medieval Europe by transmission along existing trade routes or arise there independently?

Open The Magnetic Compass

Why It Is Open Han-dynasty lodestone-spoon use is attested for divination, and Shen Kuo's 1088 description is the first clear account of a directional needle, but no source pins down exactly when navigational use began or documents a transmission route to Europe.

What Would Settle It A dated Chinese or Islamic-world source describing shipboard compass navigation, or documentary evidence of a specific trade contact carrying the technology westward, would settle the timing and the transmission question respectively.

Expertise Needed History of technology

Question posed in Compass (Wikipedia), Wikipedia contributors, Lead section.

Classification 1

Recorded as unresolved.

Software Engineering Is software engineering genuinely a form of engineering in the licensed-profession sense, and should software engineers be licensed as Professional Engineers the way civil or electrical engineers are?

Open Software Engineering

Why It Is Open Wikipedia's software engineering article records that "the NCEES began offering a Professional Engineer exam for Software Engineering in 2013...NCEES ended the exam after April 2019 due to lack of participation. Mandatory licensing is currently still largely debated, and perceived as controversial." The same article notes the ACM and IEEE Computer Society examined licensing in the 1990s and concluded it was inappropriate for industrial practice, a conclusion the article says was not universally accepted.

What Would Settle It A revival of the licensing exam with sustained participation, or a clear professional consensus statement from ACM/IEEE Computer Society settling whether licensure suits the field, neither of which exists yet.

Question posed in Software Engineering (Wikipedia), Wikipedia contributors, Profession section, NCEES licensing paragraph.

origins 1

Where something came from, and whether its origin story holds up.

Civil Engineering When did civil engineering begin as a distinct discipline: with John Smeaton's 1771 self-designation, or with millennia of unnamed pre-professional practice?

Open Civil Engineering

Why It Is Open Wikipedia's own civil engineering article calls Smeaton "the first self-proclaimed civil engineer" (1771, Eddystone Lighthouse) while the same article calls the discipline "the second-oldest engineering discipline after military engineering," reaching back to Egyptian, Mesopotamian, Greek and Roman construction with no professional title attached. Historians differ on whether "civil engineering" names a practice (ancient) or a profession (18th century onward).

What Would Settle It A settled historiographical convention on whether "engineering" disciplines are dated from their professional/institutional founding or from the earliest practice they describe; no such family-wide convention exists yet.

Question posed in Civil Engineering (Wikipedia), Wikipedia contributors, History section, Smeaton and Institution of Civil Engineers founding paragraph.