Disputed Statements

Green, Colors

Standing Scholarly debate

Concerns Origin Period End Year

Currently States 1704

According To Newtonian optics: the seven-colour spectrum

Isaac Newton's own account in Opticks (London, 1704) describes how he arrived at seven spectral colours: his earliest prism observations distinguished five bands, and he settled on seven, adding orange and indigo, by explicit analogy with the seven intervals of the musical octave, a numerological choice rather than a further optical finding. Reading Newton's own text against the continuous gradient a prism actually produces shows the seven-fold division is an interpretive choice about where to draw lines in that continuum, not a count nature supplies; observers from Newton's own time onward have disputed whether indigo is visually distinct from blue and violet at all. Any scheme in this atlas that treats seven colours as given inherits Newton's seventeenth-century analogy to the octave rather than an independent observation.

Source Opticks: or, a Treatise of the Reflexions, Refractions, Inflexions and Colours of Light, Isaac Newton tier 1

Gregory of Nazianzus, Figures

Standing Scholarly debate

Concerns Lifespan or Floruit End Year

Currently States 390

The source gives this death year as approximate (circa), while the birth year is stated without qualification.

Source The Oxford Dictionary of the Christian Church, 3rd revised edition, F. L. Cross and E. A. Livingstone (eds.) tier 1

Gregory VII, Figures

Standing Scholarly debate

Concerns Lifespan or Floruit Start Year

Currently States 1015

The source marks this year circa, its own approximate estimate rather than a fixed date.

Source The Oxford Dictionary of the Christian Church, 3rd revised edition, F. L. Cross and E. A. Livingstone (eds.) tier 1

Gregory VII, Figures

Standing Scholarly debate

Concerns Lifespan or Floruit End Year

Currently States 1085

The source marks this year circa, its own approximate estimate rather than a fixed date.

Source The Oxford Dictionary of the Christian Church, 3rd revised edition, F. L. Cross and E. A. Livingstone (eds.) tier 1

Guatemala, Countries

Standing Scholarly debate

Concerns Legal Status

Currently States The constitution guarantees freedom of religion and recognises the legal personality of the Catholic Church without establishing it; the 1996 peace accords committed the state to respect and protect Maya spirituality and access to ceremonial sites, which remains incompletely implemented.

Guatemala's constitution guarantees freedom of religion and recognises the Catholic Church's legal personality without establishing it as a state church, a formally neutral framework similar to several other Latin American states. Separately, the 1996 peace accords that ended Guatemala's decades-long civil war committed the state specifically to respect and protect Maya spirituality and Maya communities' access to their ceremonial sites, a commitment the State Department's report describes as remaining incompletely implemented, with access to some ceremonial sites still contested or restricted in practice despite the accord's formal commitment. The gap recorded here is between a peace-process commitment made to a specific indigenous religious tradition and the state's documented follow-through on it, a different kind of dispute from the Catholic-recognition question.

Source International Religious Freedom Report, United States Department of State, Office of International Religious Freedom tier 1

Guhyasamaja Tantra, Esoteric Texts

Standing Scholarly debate

Concerns Era of Composition Start Year

Currently States 700

Yukei Matsunaga's critical study proposes a two phase history, the root tantra developing through the first half of the eighth century CE and reaching its present form by the century's end, a reading supported by the earliest datable external reference, a mid eighth century index by the monk Amoghavajra. Other scholars studying the same evidence caution that the text's actual origin cannot be fixed with confidence, so the eighth century dating is Matsunaga's reconstruction rather than an agreed conclusion.

Source A Critical Study of the Guhyasamaja Tantra (Francesca Fremantle), Francesca Fremantle tier 1

Guhyasamaja Tantra, Esoteric Texts

Standing Scholarly debate

Concerns Era of Composition End Year

Currently States 800

Yukei Matsunaga's critical study proposes a two phase history, the root tantra developing through the first half of the eighth century CE and reaching its present form by the century's end, a reading supported by the earliest datable external reference, a mid eighth century index by the monk Amoghavajra. Other scholars studying the same evidence caution that the text's actual origin cannot be fixed with confidence, so the eighth century dating is Matsunaga's reconstruction rather than an agreed conclusion.

Source A Critical Study of the Guhyasamaja Tantra (Francesca Fremantle), Francesca Fremantle tier 1

Guido of Arezzo, Historical Figures

Standing Scholarly debate

Concerns Lifespan or Floruit Start Year

Currently States 991

No document records Guido of Arezzo's birth. Historians of medieval music cite around 991 or 992 as the conventional estimate, derived from the dated dedication of his Micrologus and from references to his age within it, rather than from any direct record of his birth.

Source Guido of Arezzo (reference article), Wikipedia contributors tier 3

Guido of Arezzo, Historical Figures

Standing Scholarly debate

Concerns Lifespan or Floruit End Year

Currently States 1033

No document records Guido of Arezzo's death directly. Historians of medieval music cite around 1033 as the conventional estimate, the last period in which he can be placed through documentary reference, rather than a fixed death record.

Source Guido of Arezzo (reference article), Wikipedia contributors tier 3

Gundestrup Cauldron, Artifacts & Relics

Standing Scholarly debate

Concerns Place of Manufacture

Currently States Lower Danube (Thracian/Dacian) with Celtic imagery

Julia Farley and Fraser Hunter's Celts: Art and Identity (British Museum Press, 2015) examine the Gundestrup Cauldron's silver, its metalworking technique and its imagery against the archaeological record of Iron Age Europe. Their method is comparative art-historical and metallurgical analysis, finding the silver and technique point toward manufacture in the Lower Danube region while much of the imagery is stylistically Celtic; they conclude the cauldron is accordingly not simply Celtic in manufacture, or not only Celtic, since a single Danubian workshop could have produced Celtic-style imagery for a Thracian or other regional market.

Source Celts: Art and Identity, Julia Farley and Fraser Hunter tier 1

Guru Nanak Founds The Sikh Community At Kartarpur, Spread Events

Standing Scholarly debate

Concerns Start Year

Currently States 1522

1522 is the founding year the Sikh community's own SikhiWiki reference states; Wikipedia's own Guru Nanak article corroborates the general period, settling in his mid fifties and dying in 1539, without giving a calendar year itself, and names the underlying hagiographic chronology as a subject of scholarly dispute.

Source Establishment Of Kartarpur (SikhiWiki), SikhiWiki contributors tier 3

H, Alphabet Letters

Standing Scholarly debate

Concerns Chaldean Letter Value

Currently States 5

According To Modern planetary numerology, the scheme called Chaldean

The values recorded here follow Cheiro's Book of Numbers (Cheiro, the pen name of William John Warner, published by Herbert Jenkins, London, 1926), the most widely reproduced version of the so-called Chaldean numerology table. Cheiro's own text names no ancient Chaldean source for the letter values it assigns, and comparing it against other published numerology tables from the same and later periods finds no agreement between them on several letters; no Mesopotamian or Chaldean text has ever been produced that contains a comparable letter-number correspondence. That comparison is why historians of the modern occult treat "Chaldean" as a nineteenth and twentieth century marketing label rather than a checkable lineage claim. The value recorded here is Cheiro's published reading, not a settled fact.

Source Cheiro's Book of Numbers, Cheiro (William John Warner) tier 3

Ha (Pharyngeal) ح, Alphabet Letters

Standing Scholarly debate

Concerns Meaning in the Attesting Source

Currently States One of the fourteen letters that stand disjoined at the head of a sura

According To The disjoined letters of the Quran

The Study Quran: A New Translation and Commentary (Seyyed Hossein Nasr, editor-in-chief, HarperOne, 2015) surveys the classical and modern commentary tradition on the disjoined letters that open certain suras and reports no consensus reached across fourteen centuries of that commentary. The positions it records include that the meaning is known to God alone, that the letters abbreviate divine names or attributes, that they function as an oath, that they present ordinary letters of the language as a rhetorical challenge, and that some began as scribal or collectors' marks later treated as scripture. Comparing the internal textual evidence, which letters occur and in which suras, against the range of proposed readings, the commentary confirms which letters appear where while confirming that none of the proposed meanings has displaced the others.

Source The Study Quran: A New Translation and Commentary, Seyyed Hossein Nasr (editor-in-chief) tier 1

Ha ه, Alphabet Letters

Standing Scholarly debate

Concerns Meaning in the Attesting Source

Currently States One of the fourteen letters that stand disjoined at the head of a sura

According To The disjoined letters of the Quran

The Study Quran: A New Translation and Commentary (Seyyed Hossein Nasr, editor-in-chief, HarperOne, 2015) surveys the classical and modern commentary tradition on the disjoined letters that open certain suras and reports no consensus reached across fourteen centuries of that commentary. The positions it records include that the meaning is known to God alone, that the letters abbreviate divine names or attributes, that they function as an oath, that they present ordinary letters of the language as a rhetorical challenge, and that some began as scribal or collectors' marks later treated as scripture. Comparing the internal textual evidence, which letters occur and in which suras, against the range of proposed readings, the commentary confirms which letters appear where while confirming that none of the proposed meanings has displaced the others.

Source The Study Quran: A New Translation and Commentary, Seyyed Hossein Nasr (editor-in-chief) tier 1

Hachiman, Deities

Standing Scholarly debate

Concerns Historicity

Currently States Legendary: known from narrative tradition, not the historical record

Hachiman, the kami of archery and war, came to be identified in Japanese tradition with Emperor Ojin, a ruler placed by the traditional chronologies in the early centuries CE. Helen Hardacre's Shinto: A History (2017) records that this identification is a historical syncretism, a later linking of the kami with an already legendary imperial figure, and that the historicity of Ojin and of Japan's earliest imperial line generally is itself unsettled in the scholarship, resting on the Kojiki and Nihon Shoki, court chronicles compiled centuries after the events they describe and shaped by the political needs of the court that commissioned them. Hardacre's method is historical, reading the chronicle material against archaeological and epigraphic evidence for the early Japanese state, which is too sparse before roughly the fifth century to confirm individual reigns. Because Hachiman's identity is built on Ojin's, and Ojin's own historicity is not established, the kami's historicity is recorded as unresolved.

Source Shinto: A History, Helen Hardacre tier 1

Haha ਹ, Alphabet Letters

Standing Scholarly debate

Concerns Origin Period

Currently States Sikh tradition credits Guru Angad, the second Guru, with giving the script its settled form in the sixteenth century

According To The Gurmukhi script

Two reference works give incompatible accounts. The Encyclopaedia of Sikhism (Harbans Singh, editor-in-chief, Punjabi University, Patiala, 1998) carries the Sikh tradition that Guru Angad, the second Guru (1504-1552), devised the script. The World's Writing Systems (Peter T. Daniels and William Bright, eds., Oxford University Press, 1996), surveying the paleography of Indic scripts, holds instead that the letterforms were already in mercantile use in the Punjab as one of the Landa scripts descended from Sharada, and that comparing those existing Landa forms against the Gurmukhi letters attested from Guru Angad's era shows a fixing and standardising of a repertoire already in circulation rather than an invention from nothing. Neither side has displaced the other because the two accounts read different kinds of evidence, a community's own historical memory against a comparative script lineage, and the atlas records both without adjudicating.

Source The Encyclopaedia of Sikhism, Harbans Singh (editor-in-chief) tier 2

Haha ਹ, Alphabet Letters

Standing Scholarly debate

Concerns Origin Period

Currently States Historians of Indic writing place the letterforms earlier, in the Landa mercantile hands already used across the Punjab

According To The Gurmukhi script

Two reference works give incompatible accounts. The Encyclopaedia of Sikhism (Harbans Singh, editor-in-chief, Punjabi University, Patiala, 1998) carries the Sikh tradition that Guru Angad, the second Guru (1504-1552), devised the script. The World's Writing Systems (Peter T. Daniels and William Bright, eds., Oxford University Press, 1996), surveying the paleography of Indic scripts, holds instead that the letterforms were already in mercantile use in the Punjab as one of the Landa scripts descended from Sharada, and that comparing those existing Landa forms against the Gurmukhi letters attested from Guru Angad's era shows a fixing and standardising of a repertoire already in circulation rather than an invention from nothing. Neither side has displaced the other because the two accounts read different kinds of evidence, a community's own historical memory against a comparative script lineage, and the atlas records both without adjudicating.

Source The World's Writing Systems, Peter T. Daniels and William Bright (eds.) tier 1

Haile Selassie I, Figures

Standing Scholarly debate

Concerns Tradition

Currently States Held by Rastafari to be the returned messiah or the divine presence in a living man

According To Rastafari

Barry Chevannes's Rastafari: Roots and Ideology (Syracuse University Press, 1994) documents that the different houses of Rastafari hold differing readings of Haile Selassie I's divinity: some hold him to be God incarnate, some the returned Christ, some the earthly head of the movement in language its adherents read as figurative rather than literal. Chevannes records that Haile Selassie was himself a practising Ethiopian Orthodox Christian who denied the divine claim publicly, including in a filmed interview in 1967, and that most adherents, examining that denial against their own theology of divine humility, do not treat it as settling the question.

Source Rastafari: Roots and Ideology, Barry Chevannes tier 1

Haiti, Countries

Standing Scholarly debate

Concerns Religious Composition

Currently States About 55% Catholic and 30-35% Protestant (evangelical); the great majority of Haitians additionally practice or draw upon Haitian Vodou, syncretizing West African and Catholic elements (Pew Research Center, Religious Composition of the World, 2010-2020).

Haiti's religious composition is commonly given as roughly 55 per cent Catholic and 30 to 35 per cent Protestant, mostly evangelical, under Pew Research Center's 2010 to 2020 compilation, but the great majority of Haitians additionally practice or draw upon Haitian Vodou alongside their Christian affiliation rather than as a separately counted majority religion. This makes clean percentage separation difficult in the way Benin's Vodun figures are also difficult to state cleanly: a single respondent's Vodou practice and Catholic or Protestant identification are not mutually exclusive categories a survey instrument built around one primary religious affiliation can cleanly separate, so any published percentage for Vodou specifically undercounts syncretic practice by the survey's own design rather than through a correctable measurement error.

Source Religious Composition of the World, 2010-2020, Pew Research Center tier 2

Haldi, Deities

Standing Scholarly debate

Concerns Origin of the Name

Currently States One proposal connects Haldi's name to a Hurrian word, heldi, meaning "high." A separate theory holds that Haldi, like the legendary ancestor-name Hayk, was originally a title for a conqueror or warrior rather than a personal name. Neither reading is settled, and Zimansky notes Haldi appears to have been adopted into Urartian state religion rather than native to it.

Source Ecology and Empire: The Structure of the Urartian State, Paul Zimansky tier 2