Brian Muraresku & Graham Hancock on the Joe Rogan Experience #1543, fact-checked

What the evidence shows: Muraresku traces this claim to a 1976 letter he says he found in the Harvard archives, in which Albert Hofmann reportedly told co-author Gordon Wasson that he had self-experimented with ergonovine (ergometrine) and rated it five to ten times more potent than psilocybin. That letter has not been published as data and its specific potency comparison has not been independently verified or replicated in the scientific literature. A 2024 peer-reviewed Frontiers in Pharmacology review of hallucinogenic drugs and the heart confirms that ergometrine can act as a 5-HT2A receptor agonist and has been linked to hallucinations, but notes the human evidence for this is limited to animal studies and a single 1980 case report (Ott and Neely), not a systematic or quantitative potency comparison against psilocybin. Ergometrine is otherwise a well-established obstetric drug (used for postpartum hemorrhage) and is not recognized in mainstream pharmacology as a recreational hallucinogen with an established potency ranking relative to psilocybin. The claim rests on an anecdotal, unpublished, non-peer-reviewed source and is not corroborated by the broader scientific literature.

What the evidence shows: A 2018 study led by Stanford archaeologist Li Liu, with University of Haifa co-authors, examined stone mortars from Raqefet Cave (Muraresku says "Rockefet"), a roughly 13,000-year-old Natufian burial site near Haifa, Israel, where remains of about 30 individuals have been recovered. Residue analysis indicated the mortars were used for storing and processing cereals, including malting, mashing, and fermenting a mixture of wheat, barley, and other plants, consistent with a beer-like beverage rather than a modern beer recipe. Researchers described the find as the oldest known evidence of man-made alcohol and suggested it supports, without proving, the "beer before bread" hypothesis. Muraresku's account is substantially accurate on the core facts (Stanford-led team, roughly 30 individuals, mortars, malting/mashing residue interpreted as beer-related), though the cave name is mispronounced and the specific date framing (11,700-9,700 BC) is an approximate simplification of the study's roughly 13,000-year-old dating.

What the evidence shows: The claim that the Great Sphinx's erosion patterns prove it is roughly 12,500 years old originates with geologist Robert Schoch's "water erosion hypothesis," developed in the early 1990s with writer John Anthony West, who argued the monument's weathering reflected heavy rainfall from a wetter climate period thousands of years before Egypt's Old Kingdom. The mainstream archaeological and geological consensus, based on stratigraphy, quarry evidence, associated tombs and temples, and the Sphinx's integration into the layout of the rest of the Giza pyramid complex, dates its construction to roughly 2558-2532 BCE, during the reign of the pharaoh Khafre. Most geologists and Egyptologists who have reviewed Schoch's methodology find it unpersuasive, noting the same weathering pattern can result from softer, more porous limestone strata combined with subsurface moisture and salt weathering over an ordinary, much shorter timescale, and that no other archaeological evidence supports an advanced civilization at Giza thousands of years earlier. Separate 2023 fluid-dynamics research proposing the Sphinx's basic body shape could have begun as a wind-carved natural rock formation (a yardang) addresses erosion processes at Giza but does not support a 12,500-year date; researchers explicitly maintained the carved monument itself is roughly 4,500 years old. The 12,500-year dating remains a minority position rejected by the large majority of geologists and Egyptologists who study the site.

What the evidence shows: The water-erosion dating of the Sphinx originates with geologist Robert Schoch and writer John Anthony West in the early 1990s, who argued that rounded weathering channels on the enclosure walls required sustained heavy rainfall unavailable in Egypt after roughly 5,000 BCE, implying an age far older than the conventional ~2500 BCE date. This interpretation was directly challenged by other geologists (Gauri, Sinha and Tandon, 1995, Geoarchaeology), who proposed that the same channel and rounding features can form through arid-climate weathering of alternating hard and soft limestone strata combined with pre-existing karst drainage features, concluding the monument "may still be regarded as of pharaonic origin." A 2024 fluid-dynamics study published in the Proceedings of the National Academy of Sciences found that lion-like yardang landforms, including Sphinx-like heads, necks and paws, can be produced by ordinary wind and sand erosion of rock outcrops with alternating hard and soft layers, without any need for ancient rainfall; the same paper notes that archaeological surveys indicate the Sphinx's body was largely or entirely carved by human excavation rather than left as a purely natural formation. The great majority of Egyptologists and geologists date the Sphinx to the reign of Pharaoh Khafre (circa 2500 BCE) based on stylistic, stratigraphic and archaeological evidence tying it to the Khafre pyramid complex; the Younger Dryas water-erosion hypothesis remains a minority position rejected by mainstream archaeology and is not supported by independent dating methods.

What the evidence shows: Martin Luther King Jr. did write a paper titled "The Influence of the Mystery Religions on Christianity" while a graduate student at Crozer Theological Seminary, for a course titled Development of Christian Ideas, in the term running November 1949 to February 1950. The paper survives and is archived by the Martin Luther King, Jr. Papers Project at Stanford, which records that King's professor graded it an A. However, the paper was a routine graded seminary course assignment, not an independently published or peer-reviewed scholarly work, and the Papers Project's own annotation notes that King repeats material from an earlier paper of his, "A Study of Mithraism," extending the discussion to other mystery religions. This pattern of reusing material from earlier student papers without full attribution appears elsewhere in King's Crozer and Boston University coursework and is documented by the King Papers Project and discussed by King scholars. The claim that King wrote this paper in 1950 is accurate, but presenting it without this context implies a level of independent scholarly originality and authority the document does not have.