RESEARCH BASE
Search 3,721 documents across 34 fields — every claim tier-rated by evidence
3,633 are the core, quality-scored corpus (34 lettered sections — see How We Work); the remaining 88 are cross-corpus synthesis documents (68 InterDocs, 12 Connections, 8 Theories) also indexed here.
3,009 results for "System 1 System 2" — page 27 of 151
D_1_07 — Teotihuacan — City of the Gods
Teotihuacan — the name itself meaning "the place where gods were born" in Nahuatl, given by the Aztecs who found the city already in ruins — was one of the largest cities in the ancient world, reaching a peak population
D_5_27 — Electromagnetic and Acoustic Properties of Sacred Sites
A growing body of measurement work shows that several Neolithic and Bronze Age ceremonial sites — Newgrange (Ireland, ~3200 BCE), the Hypogeum of Ħal Saflieni (Malta, ~3300–3000 BCE), Chavín de Huántar (Peru, ~1200–500 B
D_3_01 — Serpent Mound & Effigy Mounds
The Great Serpent Mound in Adams County, Ohio is the largest surviving effigy mound in the world at 1,348 feet (411 m), depicting a sinuous serpent with seven undulating curves and an egg-shaped feature at its head. It c
B_4_01 — Solomon and the Jinn
The Islamic tradition preserves one of the most detailed and theologically developed accounts of a human ruler commanding non-human beings. In the Quran, Sulayman (Solomon) is granted divine authority over the jinn — int
ZD_3_15 — Reversible Computing: Landauer's Principle and the Thermodynamics of Computation
Reversible computing — the theory and practice of performing computation without irreversible information loss — sits at the intersection of computer science, thermodynamics, and information theory, centered on the profo
ZD_2_03 — Natural Language Processing
Natural language processing (NLP) — the computational analysis, understanding, and generation of human language — spans rule-based, statistical, and neural approaches across tasks including machine translation, text clas
L_1_04 — Archaic Human Species Synthesis
The human evolutionary tree is far more complex than the older linear model suggested. Fossils, ancient DNA, and proteomics now show that Homo sapiens overlapped with several other hominin lineages, including Neanderthal
L_1_08 — Denisovans — Archaic Hominin Deep Dive
Denisovans are an extinct group of archaic hominins identified primarily through ancient DNA analysis rather than traditional fossil morphology — making them history's first hominins to be discovered by genetics. In 2010
L_1_16 — Denisovan Genetics and Legacy
The Denisovans — an extinct group of archaic humans first identified in 2010 from ancient DNA extracted from a finger bone fragment found in Denisova Cave, Altai Mountains, Siberia (~41,000 years old) — represent one of
L_4_17 — Transgenerational Epigenetic Trauma
Transgenerational epigenetic inheritance of trauma — the hypothesis that severe stress, famine, or psychological trauma experienced by one generation can alter the epigenetic marks (DNA methylation, histone modifications
L_2_06 — South Asian Genetics and Population History
South Asia harbors one of the most genetically diverse and internally structured population histories of any world region, reflecting deep settlement, repeated admixture, and long periods of extreme endogamy. The best-su
L_3_13 — Human Accelerated Regions: What Makes Us Genetically Unique
Human Accelerated Regions (HARs) are short segments of the genome that were highly conserved across millions of years of mammalian evolution — indicating strong functional constraint — but then underwent a burst of rapid
L_5_15 — Genetic Genealogy: DNA Ancestry Testing and Population History
Genetic genealogy — the use of DNA testing to determine relationships and ancestry — has revolutionized both personal genealogy and population genetics since the early 2000s. Three types of DNA analysis provide different
Y_4_16 — Hypnagogia: The Threshold State Between Waking and Sleep
Hypnagogia is the transitional state of consciousness experienced during the onset of sleep (waking-to-sleep), characterized by vivid spontaneous imagery, auditory hallucinations, distorted body perception, and loosened
Y_4_22 — Hypnagogic & Hypnopompic States
Hypnagogia (the transitional state between wakefulness and sleep onset) and hypnopompia (the transition from sleep to waking) are naturally occurring altered states of consciousness experienced universally by humans. Cha
Y_4_11 — Trance States Across Cultures
Trance — an altered state of consciousness characterized by narrowed or shifted attention, altered sense of self, reduced awareness of external surroundings, and modified responsiveness — is one of the most universal fea
Y_5_19 — Congenital Insensitivity to Pain: SCN9A, Nociception, and the Neuroscience of Painlessness
Congenital insensitivity to pain (CIP) encompasses a group of rare inherited conditions in which individuals are born with absent or severely diminished pain perception while retaining other sensory modalities (touch, pr
Y_2_06 — Dissociation, Depersonalization, and Derealization
Dissociation — the disruption of normally integrated functions of consciousness, memory, identity, emotion, perception, behavior, and sense of self — represents one of the most revealing natural experiments for understan
Y_2_17 — Barrier Gating and Altered States of Consciousness
Altered states of consciousness — produced by psychedelics, anesthetics, hypnagogic and hypnopompic transitions, near-death events, deep meditation, breathwork, and sensory deprivation — share a common functional signatu
Y_1_13 — Xenon Gas and Nitrous Oxide: Anesthetic Gases as Consciousness Probes
Nitrous oxide (N₂O — "laughing gas") and xenon (Xe — a noble gas) are two anesthetic gases that have served as remarkable probes of consciousness — revealing how the manipulation of a single molecule or atom can dissolve
BROWSE BY SECTION — 3,721 documents across 34 fields