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.
1,723 results for "System 2" — page 4 of 87
X_5_07 — Neurology: The Clinical Science of the Nervous System
Neurology is the branch of medicine dealing with disorders of the nervous system — the brain, spinal cord, peripheral nerves, and neuromuscular junction. The discipline encompasses some of the most devastating and challe
X_1_12 — Osteopathic and Chiropractic Medicine
Osteopathic medicine and chiropractic are two parallel manual therapy traditions that emerged in late 19th-century America, both centered on the spine and musculoskeletal system but diverging significantly in their subse
X_4_14 — Global Health: Equity, Systems, and Planetary Well-Being
Global health is the field concerned with improving health and achieving health equity for all people worldwide — transcending national boundaries and addressing the determinants of health at population, environmental, a
X_4_20 — Autoimmune Disease Rise & Hygiene Hypothesis
The dramatic rise of autoimmune and allergic diseases in industrialized nations over the past half-century — while these conditions remain comparatively rare in developing countries — represents one of the most important
X_3_26 — Chronobiology & Circadian Medicine
Chronobiology — the study of biological rhythms — has emerged from a niche curiosity to a Nobel Prize–winning discipline with profound implications for medicine, metabolism, and mental health. [KEY FINDING] The 2017 Nobe
X_3_27 — mRNA Technology Development & Revolution
The development of messenger RNA (mRNA) therapeutics represents one of the most dramatic scientific success stories of the twenty-first century — a technology decades in the making that went from academic obscurity and f
X_3_28 — Cancer Immunotherapy Revolution
Cancer immunotherapy — harnessing the body's own immune system to recognize and destroy tumor cells — has transformed oncology from a field dominated by surgery, radiation, and chemotherapy into one where the immune syst
X_3_02 — Vaccination and Immunology History
Vaccination — the deliberate stimulation of adaptive immune responses using weakened, killed, or component pathogens to provide protection against infectious disease — is among the most consequential medical intervention
W_4_02 — Polynesian Navigation and Rapa Nui
The Polynesian settlement of the Pacific Ocean — the largest migration in human prehistory — colonized virtually every inhabitable island across 16 million km² of open ocean using non-instrument navigation techniques of
W_3_02 — Kingdom of Kush and Nubian Civilization — Kerma, Napata, Meroë
The Kingdom of Kush and broader Nubian civilization, centered along the Middle Nile in present-day Sudan, represents one of the most powerful and enduring polities in African history — yet remains chronically underrepres
W_3_12 — Gupta Empire: Classical India's Golden Age
The Gupta Empire (c. 320–550 CE) is widely regarded as the "Golden Age" of classical India — a period of extraordinary achievement in literature, science, mathematics, philosophy, art, and architecture that set the cultu
W_3_22 — Mapungubwe Kingdom
Mapungubwe (c. 1075–1290 CE) was the first complex state society in southern Africa, located at the confluence of the Limpopo and Shashe rivers in present-day South Africa. The site demonstrated the earliest evidence of
W_2_23 — Pyu City-States
The Pyu city-states (c. 200 BCE – 1050 CE) were the earliest urbanized polities in mainland Southeast Asia, located in the dry zone and Irrawaddy River valley of modern Myanmar (Burma). Three major walled cities — Beikth
W_2_28 — Gupta Empire: Classical India's Golden Age
The Gupta Empire (c. 320–550 CE) is widely regarded as the "Golden Age" of classical India — a period of extraordinary achievement in literature, science, mathematics, philosophy, art, and architecture that set the cultu
W_5_34 — Late Bronze Age Collapse: Systems Failure in the Ancient Mediterranean
Between approximately 1200 and 1150 BCE, every major civilization in the Eastern Mediterranean collapsed or suffered catastrophic decline within a single generation. The Mycenaean palatial system, the Hittite Empire, the
ZH_3_19 — Inca Astronomy and Ceque System
Inca astronomy represents one of the most sophisticated indigenous astronomical traditions of the Americas, deeply embedded in the spatial, ritual, and agricultural organization of the Tawantinsuyu (Inca Empire, ~1438–15
ZH_2_02 — Indian Astronomical Traditions: Aryabhata to Jantar Mantar
Indian astronomy (Jyotish Shastra) constitutes one of the most mathematically sophisticated astronomical traditions of the pre-modern world, spanning from the Vedic period (c. 1500–500 BCE) through the classical siddhānt
ZH_2_01 — Chinese Astronomical Records: Supernovae, Comets, Guest Stars
China produced the longest continuous tradition of systematic astronomical observation in human history — spanning from the Shang dynasty oracle bone inscriptions (c. 1200 BCE) through the imperial astronomical bureaus o
C_5_03 — Indigenous Knowledge Systems
Indigenous knowledge systems represent the longest-running experiments in human survival — the Australian Aboriginal peoples have maintained continuous cultural practice for 65,000+ years, making theirs the oldest living
C_3_02 — Language Origins and the Tower of Babel
How did language begin? This is "the hardest problem in science" (Christiansen & Kirby 2003). The Linguistic Society of Paris banned all papers on language origins in 1866 because the topic produced more speculation than
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