Open Questions

Open Amarnath Cave

Why It Is Open The cave is named in the Nilamata Purana and in Kalhana's Rajatarangini, but neither text's date of composition is settled, so their references cannot fix how far back the site's veneration actually runs.

What Would Settle It A codicological or paleographic dating study of the manuscript traditions of the Nilamata Purana and the Rajatarangini, or an independently dated inscription or record naming the cave before the nineteenth century.

Expertise Needed Indology, manuscript studies, Sanskrit philology

Question posed in Encyclopedia of Hinduism, Denise Cush, Catherine Robinson and Michael York (eds.).

Open Parshvanatha

Why It Is Open Critical scholarship accepts Parshvanatha and Mahavira as historical figures. Jain tradition holds all twenty four to be historical teachers. For the remaining twenty two there is no independent attestation, so a single answer applied across the group would misdescribe most of it in one direction or the other.

What Would Settle It Independent attestation for any individual Tirthankara beyond the two, whether inscriptional, textual from outside the tradition, or archaeological.

Expertise Needed Indology, Jain studies, and South Asian archaeology.

Question posed in The Jains, Paul Dundas, Second edition, page 19.

Open Soma

Why It Is Open At least three serious candidates have been argued at length and none is established. Wasson proposed Amanita muscaria in 1968; Flattery and Schwartz proposed Peganum harmala in 1989; ephedra is favoured on the grounds that it is the plant used in the living Zoroastrian Yasna, a ritual with no recorded break. Each fits some of the textual evidence and fails on other parts of it.

What Would Settle It A securely dated archaeobotanical find from an Indo-Iranian ritual context with residue analysis, or a philological argument that settles the disputed Rig Veda passages. A fourth possibility deserves testing: that the hymns are liturgical praise rather than pharmacological description, in which case a mild plant is sufficient and the search for a potent one is misconceived.

Expertise Needed Indology, Iranian and Avestan philology, archaeobotany, ethnobotany

Question posed in Soma: Divine Mushroom of Immortality, R. Gordon Wasson.

Open Telepathy

Why It Is Open The original series reported dream content correlating with a sender's target image above chance, but no other laboratory reproduced the effect, and the series itself was never repeated at a comparable scale. Irvin Child argued in 1985 that the result was dismissed rather than evaluated, which is a claim about how the field responded rather than a claim that anyone has since run the missing replication.

What Would Settle It A preregistered, multi-night sleep laboratory replication with automated target selection, blind judging of dream transcripts against a randomized image pool, and a sample size and analysis plan fixed in advance.

Expertise Needed Sleep research; experimental psychology; meta-analytic methodology

Question posed in Dream Telepathy: Experiments in Nocturnal Extrasensory Perception, Montague Ullman, Stanley Krippner and Alan Vaughan.

Open The Autoganzfeld Series

Why It Is Open Hyman and Honorton wrote down, jointly and in advance, what a decisive ganzfeld study would look like. No series run since has been accepted by both sides as meeting it. Two later meta-analyses, Milton and Wiseman in 1999 and Storm, Tressoldi and Di Risio in 2010, reach opposite conclusions on differently defined study pools, so the accumulated literature cannot settle it either.

What Would Settle It A pre-registered adversarial collaboration with laboratories on both sides of the dispute, an analysis plan agreed and lodged before data collection, and a commitment from all parties to publish whatever results.

Expertise Needed Experimental psychology; meta-analysis; pre-registration methodology

Question posed in A Joint Communique: The Psi Ganzfeld Controversy, Ray Hyman, Charles Honorton.

Open Feeling the Future

Why It Is Open Bem, Tressoldi, Rabeyron and Duggan report a small overall effect across ninety experiments and argue that bias-correction methods do not remove it. Critics answer that the correction methods available cannot distinguish a genuine small effect from a literature filtered by what got written up, particularly where many of the constituent studies were not pre-registered. The dispute is about the adequacy of the statistical tools, and it is live in the wider methodology literature and not only in parapsychology.

What Would Settle It A registered-report replication series of adequate power, with the analysis plan lodged in advance and a commitment to publish, run by laboratories on both sides.

Expertise Needed Meta-analytic methodology; statistics; experimental psychology

Question posed in Feeling the Future: A Meta-Analysis of 90 Experiments on the Anomalous Anticipation of Random Future Events, Daryl J. Bem, Patrizio Tressoldi, Thomas Rabeyron and Michael Duggan.

Open Gayatri Hymn

Why It Is Open The hymn's placement in the family books, the oldest stratum of the Rig Veda, is secure on internal linguistic grounds. The absolute date of that stratum is not: proposed dates range across the whole second millennium BCE, and no inscription, datable artefact or external synchronism fixes any point in that range.

What Would Settle It A securely dated inscription, artefact or archaeological correlate that can be tied to the language or content of the family books, comparable to the role the Mitanni treaty plays in dating other early Indo-Iranian material, would anchor the range.

Expertise Needed Vedic philology, Indo-Iranian archaeology

Question posed in The Rigveda: The Earliest Religious Poetry of India, Stephanie W. Jamison and Joel P. Brereton.

Open Gayatri Mantra

Why It Is Open The Gayatri's placement in the family books, the oldest stratum of the Rig Veda, is secure on internal linguistic grounds. The absolute date of that stratum is not: proposed dates range across the whole second millennium BCE, and no inscription, datable artefact or external synchronism fixes any point in that range.

What Would Settle It A securely dated inscription, artefact or archaeological correlate that can be tied to the language or content of the family books, comparable to the role the Mitanni treaty plays in dating other early Indo-Iranian material, would anchor the range.

Expertise Needed Vedic philology, Indo-Iranian archaeology

Question posed in The Rigveda: The Earliest Religious Poetry of India, Stephanie W. Jamison and Joel P. Brereton.

Open Soma Sacrifice

Why It Is Open The Rig Veda describes soma's habitat, preparation and effects, but the living tradition lost the plant before the late Vedic period, when the ritual texts already prescribe substitutes. Two centuries of proposals (ephedra, fly agaric, Syrian rue, and others, including Wasson's 1968 book-length fly agaric case) each fit some verses and fail others, and no candidate has won consensus.

What Would Settle It Archaeobotanical residue analysis from an early Vedic or BMAC-context ritual vessel with identifiable plant remains, or a decisive phytochemical match between the full Rigvedic description and a candidate species in its Indo-Iranian range.

Expertise Needed Archaeobotany and Vedic philology

Question posed in The Rigveda: The Earliest Religious Poetry of India, Stephanie W. Jamison and Joel P. Brereton, Introduction, on soma and its identification.

Open Onycha

Why It Is Open The Hebrew shecheleth of Exodus 30:34 is rendered onycha, fingernail, in the Septuagint. The leading identification is the operculum of a marine gastropod, which fits the sense, a nail-like hard plate, and the ancient aromatics trade. Benzoin, labdanum and rockrose are proposed plant alternatives but fit neither the sense nor the trade as well. A non-kosher animal product in the sacred incense is a live halakhic difficulty, which is the main reason the operculum identification is resisted by some commentators rather than for philological reasons. No reconstruction of the ketoret can be made without settling this, and it has not been settled.

What Would Settle It A residue analysis of an incense deposit from a securely dated Second Temple period altar or vessel, compared chemically against operculum keratin and against the candidate plant resins, would settle which substance was actually burned.

Expertise Needed Archaeochemistry, biblical studies

Question posed in Encyclopedia of Religion, Mircea Eliade (ed.); Lindsay Jones (ed., 2nd ed.).

Open Ergot

Why It Is Open Proposed by Wasson, Hofmann and Ruck in 1978. It would explain how an experience initiates consistently described as overwhelming could be produced reliably for thousands of people on a schedule. But no ancient source describes anything of the kind, the water extraction needed to separate soluble from toxic alkaloids is delicate, and the argument reasons backwards from the reported effect to a cause that would account for it.

What Would Settle It Residue analysis of vessels securely associated with the Eleusinian rite, or a text that describes the preparation. Absent either, the question may be permanently undecidable, since the Mysteries were kept for roughly two thousand years and the secret held.

Expertise Needed Classics, ancient history, archaeochemistry, mycology

Question posed in The Road to Eleusis: Unveiling the Secret of the Mysteries, R. Gordon Wasson, Albert Hofmann and Carl A. P. Ruck.

Open Nazca

Why It Is Open The Nazca (about 100 BCE to 800 CE) left no writing system, so no text records their own speech. The Quechua and Aymara families dominant on the Peruvian south coast today arrived through Inca imperial expansion in the fifteenth century and Spanish colonial administration afterward, six hundred years or more after Nazca civilization had already ended, so their modern presence cannot be read backward onto the Nazca population. Scholarship on Andean historical linguistics treats a Quechuan or Aymaran tie for the pre-Inca south coast cultures as speculative, resting on colonial-era impressions of multilingualism that may equally reflect internal variation within those two families elsewhere in the Andes.

What Would Settle It A securely dated Nazca-period inscription would settle it outright, but none has been found and the culture is understood to have had no writing system at all. Short of that, a documented layer of loanwords or toponyms in a later, attested language that can be traced specifically and exclusively to the pre-Inca Rio Grande de Nasca drainage, rather than to the wider post-Inca Quechua-speaking Andes, would be evidence a historical linguist could evaluate.

Expertise Needed Historical linguistics, archaeology

Question posed in The Languages of the Andes, Willem F. H. Adelaar with Pieter C. Muysken.

Open Edward Kelley

Why It Is Open The Enochian material rests entirely on Kelley's reports of what appeared in the showstone, recorded by John Dee. Dee's diaries are strong evidence of what Dee believed and weak evidence of what actually occurred. Frances Yates called Kelley a fraud outright; others treat him as a genuine visionary or as self-deceived. The question is central to how the whole Enochian corpus should be read and is not settled.

What Would Settle It It may be unresolvable in principle, which is worth recording as such. It would move on evidence of Kelley preparing material in advance, or on linguistic analysis of the Enochian corpus bearing on whether it was composed rather than received.

Expertise Needed Early modern history, palaeography, and historical linguistics for the Enochian corpus itself.

Question posed in John Dee's Conversations with Angels: Cabala, Alchemy, and the End of Nature, Deborah E. Harkness, Pages 11 and 24.

Open Archaeochemistry

Why It Is Open Chemical analysis of archaeological material goes back to the French chemist Marcelin Berthelot's survey of about 150 Egyptian and Near Eastern artifacts in the late nineteenth century, and continued through Earle Caley's American work from the late 1930s onward, but nobody appears to have fixed a single moment when the practice became a named field rather than a recurring collaboration between two older disciplines. Caley's own retrospective papers describe a history rather than announce a founding.

What Would Settle It A dedicated historiographic study of archaeological chemistry's own institutional history, comparable to the histories that exist for archaeometry (dated to the 1958 founding of the Oxford Research Laboratory for Archaeology and the History of Art) or radiocarbon dating (dated to Willard Libby's 1949 paper). No such study of archaeochemistry specifically has been identified; one would need to trace when practitioners first identified as archaeochemists rather than as chemists who occasionally worked on archaeological material.

Expertise Needed History of chemistry and history of archaeology, tracing when chemical analysis of archaeological material stopped being an occasional collaboration and became a named, self-identified subfield.

Question posed in The Early History of Chemistry in the Service of Archaeology (Caley, Journal of Chemical Education, 1967), Earle R. Caley.

Open Gallium

Why It Is Open The discoverer gave the patriotic reason, that he had named the element for Gallia, the Latin name for France. The coincidence that gallus is Latin for a rooster, and that his own surname, Lecoq, is French for the rooster, was pointed out at once and has been repeated ever since. Whether the second reading was intended, quietly enjoyed, or only ever imagined by other people cannot be settled from the naming announcement, which offers the patriotic reason alone.

What Would Settle It A statement of intent in Lecoq de Boisbaudran's own correspondence or working papers. Failing that, the question concerns a private intention and may simply not be answerable.

Expertise Needed History of chemistry, and French archival work on the Lecoq de Boisbaudran papers.

Question posed in Periodic Table: Gallium, Royal Society of Chemistry, History section of the gallium entry.

Open Gayatri Hymn

Why It Is Open The hymn's placement in the family books, the oldest stratum of the Rig Veda, is secure on internal linguistic grounds. The absolute date of that stratum is not: proposed dates range across the whole second millennium BCE, and no inscription, datable artefact or external synchronism fixes any point in that range.

What Would Settle It A securely dated inscription, artefact or archaeological correlate that can be tied to the language or content of the family books, comparable to the role the Mitanni treaty plays in dating other early Indo-Iranian material, would anchor the range.

Expertise Needed Vedic philology, Indo-Iranian archaeology

Question posed in The Rigveda: The Earliest Religious Poetry of India, Stephanie W. Jamison and Joel P. Brereton.

Open Gayatri Mantra

Why It Is Open The Gayatri's placement in the family books, the oldest stratum of the Rig Veda, is secure on internal linguistic grounds. The absolute date of that stratum is not: proposed dates range across the whole second millennium BCE, and no inscription, datable artefact or external synchronism fixes any point in that range.

What Would Settle It A securely dated inscription, artefact or archaeological correlate that can be tied to the language or content of the family books, comparable to the role the Mitanni treaty plays in dating other early Indo-Iranian material, would anchor the range.

Expertise Needed Vedic philology, Indo-Iranian archaeology

Question posed in The Rigveda: The Earliest Religious Poetry of India, Stephanie W. Jamison and Joel P. Brereton.

Open Younger Futhark

Why It Is Open The atlas holds three Aett rows and all three are Elder Futhark. The division of the sixteen rune Younger Futhark into three families is structurally real: cipher rune inscriptions encode a rune as a family number plus a position within that family, which cannot work without an agreed division of the row. The live rune ordering here fits the partition usually reported, six, five and five, because Hagall stands at position 7 and Tyr at position 12, exactly where the second and third families would begin. The naming is what could not be established. A pass on 2026-07-27 found only popular and unsourced material, which does not agree with itself: the same three names are given over groups of eight, four and four, of six, six and four, of six, five and five, and of eight, eight and eight, and none of it carried a locator that could be checked. Deriving the rows from the rune ordering alone was refused as inference presented as attestation, so nothing was seeded.

What Would Settle It A reading of the standard runological literature on cryptic or cipher runes, for example Michael Barnes, Runes: A Handbook, 2012, or Klaus Duwel, Runenkunde, 2008, both already held as sources here, settling two things. First, whether the medieval evidence for the ordering of the families in cipher runes, which counts them in reverse so that the Tyr family is numbered first, is reported with family names attached or only with numbers. Second, whether the names Freyr, Hagall and Tyr for the Younger Futhark families occur in any Old Norse or Icelandic manuscript witness, or whether they enter print only in the modern revival, applied backwards from the Elder Futhark. A dated witness naming any one of the three would settle it and the rows could be seeded citing it. A demonstration that none exists would settle it the other way, and the division would stay a structural fact about cipher runes rather than three named entities.

Expertise Needed Runology; Old Norse philology; palaeography of Icelandic runic manuscripts

Question posed in Divinity Atlas Open Questions Register, First Edition.

Open Nine worlds

Why It Is Open The Eddas refer to nine worlds without ever enumerating them in one place. The lists that circulate today are modern reconstructions assembled from names scattered across the Poetic and Prose Eddas, not a set any medieval text sets out as such.

What Would Settle It A systematic philological collation of every Old Norse cosmological realm named in the Poetic Edda (Voluspa, Grimnismal, Vafthrudnismal among them) and the Prose Edda, checked for internal consistency, by an Old Norse philologist.

Expertise Needed Old Norse philology

Question posed in Encyclopedia of Religion, Mircea Eliade (ed.); Lindsay Jones (ed., 2nd ed.), art. Germanic Religion.

Open The Autoganzfeld Series

Why It Is Open Hyman and Honorton wrote down, jointly and in advance, what a decisive ganzfeld study would look like. No series run since has been accepted by both sides as meeting it. Two later meta-analyses, Milton and Wiseman in 1999 and Storm, Tressoldi and Di Risio in 2010, reach opposite conclusions on differently defined study pools, so the accumulated literature cannot settle it either.

What Would Settle It A pre-registered adversarial collaboration with laboratories on both sides of the dispute, an analysis plan agreed and lodged before data collection, and a commitment from all parties to publish whatever results.

Expertise Needed Experimental psychology; meta-analysis; pre-registration methodology

Question posed in A Joint Communique: The Psi Ganzfeld Controversy, Ray Hyman, Charles Honorton.