Open Questions

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.

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.

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.

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.

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.

Open The Wheel

Why It Is Open The wheel's earliest archaeological evidence is a potter's wheel and shortly after a wheeled cart from Mesopotamia, roughly 3500 BCE, but similar wheeled vehicles appear in the archaeological record across Central Europe and the Caucasus within a few centuries of each other, and no single inventor or point of origin can be credited from the evidence that survives.

What Would Settle It Additional securely dated archaeological finds that establish a clear chronological and geographic priority among the early Mesopotamian, Central European and Caucasus wheeled-vehicle finds; none exists today.

Expertise Needed Archaeology

Open Radio

Why It Is Open Popov demonstrated a coherer based receiver to the Russian Physical and Chemical Society on 7 May 1895 but did not patent it or publish it outside Russia in a form clearly available to Marconi at the time. Both men were building on the same coherer research already published by Oliver Lodge and others, so the resemblance between their early receivers does not by itself prove either man copied the other.

What Would Settle It A primary correspondence, laboratory notebook or contemporary press account placing Marconi in direct contact with Popov's published results before Marconi's own 1896 patent filing; none has surfaced in the sources consulted for this entry.

Expertise Needed History of technology

Question posed in Invention of Radio (Wikipedia), Wikipedia contributors.

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.

Open The Mechanical Clock

Why It Is Open The two traditions used different power sources, a water clock feeding an escapement-like linkwork versus a purely weight-and-spring drive train, so the answer turns on which feature defines "mechanical clock," not on a missing fact.

What Would Settle It A settled scholarly definition of "mechanical clock" that either includes or excludes an escapement-regulated but water-powered drive train would resolve which tradition holds priority.

Expertise Needed History of technology

Question posed in History of Timekeeping Devices (Wikipedia), Wikipedia contributors, Lead section.

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.

Open Radar

Why It Is Open At least five countries reached a working radio-echo detection system independently within a few decades of each other, so the question is which milestone, a working principle, a working military system, or an operational network, defines "invention."

What Would Settle It A settled convention for what counts as the invention of a multi-national simultaneous-discovery technology, comparable to how the field already treats the telegraph and telephone priority disputes, would resolve this the same way.

Expertise Needed History of technology

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

Open The Microprocessor

Why It Is Open The three claims answer different questions, first working design, first patent, first commercial product, and the classified CADC design was not publicly documented until years after it was built, so the historical record itself was incomplete for years, not merely uncollected.

What Would Settle It A settled convention for whether "first microprocessor" means first working design, first patent or first commercial release would resolve which claim wins under that definition; no new archival evidence is expected to change the underlying facts.

Expertise Needed History of technology

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

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.

Open Aluminum

Why It Is Open Orsted's 1825 method was not fully published or independently repeated at the time, while Wohler's 1827 work is the first isolation historians can verify in detail; whether "first isolation" should credit priority in time or the first confirmable result is a genuine, unresolved editorial question, not a missing fact.

What Would Settle It A surviving, dated laboratory record of Orsted's exact 1825 method and result, sufficient for modern chemists to confirm what he actually produced, would settle whether his claim meets the same evidentiary bar Wohler's does.

Expertise Needed History of chemistry

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

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).

Open Carbon Nanotube

Why It Is Open The Wikipedia article on carbon nanotubes states plainly that their discoverers true identity is a subject of some controversy. L. V. Radushkevich and V. M. Lukyanovich published clear images of 50 nanometre diameter hollow carbon tubes in the Journal of Physical Chemistry of Russia in 1952, but the work went largely unnoticed in the West because it was published in Russian during the Cold War, when Soviet scientific journals were hard for Western researchers to access. Sumio Iijima of NEC reported similar tube structures in 1991 in a widely read Western journal, and most academic and popular literature since has credited him with the discovery, even though a later editorial by Monthioux and Kuznetsov argued Radushkevich and Lukyanovich should be credited instead for the earlier finding that carbon filaments could be hollow at nanometre scale.

What Would Settle It A settled history-of-science judgment, backed by a close reading of the 1952 Russian paper against the 1991 Iijima paper, on whether Radushkevich and Lukyanovich actually observed and reported the same structure now called a carbon nanotube, or a related but distinct filament; absent that, the field has settled on Iijima by convention rather than by a resolved priority claim.

Expertise Needed History of science and materials science historiography

Question posed in Carbon Nanotube (Wikipedia), History section, paragraphs on early observations 1950s-1991 and the Monthioux and Kuznetsov editorial on discovery credit.

Open Vulcanization

Why It Is Open Goodyear discovered the process first but did not patent it until 1844; Hancock examined a Goodyear sample, independently worked out the same process, and patented it in Britain weeks before Goodyear's own British filing. Neither side has ever produced evidence settling whether Hancock copied or independently rediscovered the process.

What Would Settle It Documentary evidence of exactly what Hancock learned from the Goodyear sample he examined, if any, versus what he derived independently, would settle whether his 1843 patent was an independent rediscovery or a derivative of Goodyear's work.

Expertise Needed History of technology

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

Open Sintering

Why It Is Open Ancient artisans achieved sintering empirically without understanding or naming the underlying process, so the entity's single origin-year property cannot represent both an ancient craft practice and a specific engineering milestone at once.

What Would Settle It A convention for whether this atlas's "origin-year" property means first craft use or first deliberate engineering formalization would settle which date belongs on this fact, consistent with how the atlas already treats other ancient-craft-to-modern-engineering methods.

Expertise Needed History of technology

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