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.
18 results for "family resemblance"
ZC_2_14 — Sociology of the Family
Sociology of the family examines how families are structured, how they function as social institutions, and how they have transformed historically. Talcott Parsons (1955) theorized the mid-20th-century American nuclear f
P_5_09 — Wittgenstein: Language Games, Tractatus, and Investigations
Ludwig Josef Johann Wittgenstein (1889-1951) is unique in the history of philosophy for having produced two profoundly influential but largely incompatible philosophical systems. His first major work, the Tractatus Logic
ZG_2_06 — Historical Linguistics and Language Family Classification
Historical linguistics is the scientific study of how languages change over time, how they are related to each other, and how they can be grouped into language families descended from common ancestors. The discipline's c
Z_3_08 — Genetics of Taste and Smell
Taste and smell perception are profoundly shaped by genetics, with variation in chemosensory receptor genes producing dramatically different sensory worlds between individuals. The olfactory receptor (OR) gene family — d
Z_3_04 — Comparative Genomics and Cross-Species Analysis
Comparative genomics — the systematic comparison of genome sequences across species — has become the primary tool for understanding genome evolution, identifying functionally important sequences, and reconstructing the T
ZG_2_01 — Proto-Indo-European — Reconstruction, Homeland, and Migration
Proto-Indo-European (PIE) is the reconstructed common ancestor of the Indo-European language family — the most widely spoken language family on Earth, encompassing ~3.2 billion native speakers across branches including I
ZG_3_02 — FOXP2 and the Genetics of Language
FOXP2 (Forkhead Box Protein P2) is the first gene directly linked to human speech and language ability, located on chromosome 7q31 and encoding a transcription factor that regulates hundreds of downstream genes involved
INTERDOC_09 — Language-DNA-Migration Triangulation
The last two decades have witnessed a revolution in our understanding of human migration history, driven by the integration of computational linguistics, paleogenomics, and archaeology into a unified analytical framework
ZB_2_13 — Death Biology: Programmed Cell Death
Death in biology is not merely the passive failure of living systems but an actively regulated process at multiple levels — from individual cells to whole organisms. Programmed cell death (PCD), particularly apoptosis, w
ZC_2_08 — Demography and Population Studies
Demography is the scientific study of human population — its size, structure, distribution, and change through births, deaths, and migration. World population reached ~8 billion in November 2022 (UN), having grown from ~
T_2_19 — Eating Disorders
Eating disorders (EDs) — including anorexia nervosa (AN), bulimia nervosa (BN), binge eating disorder (BED), and avoidant/restrictive food intake disorder (ARFID) — affect an estimated 9% of the global population over th
ZD_1_12 — Information Geometry and Fisher Information
Information geometry is the mathematical field that applies differential geometry — the mathematics of curved spaces, manifolds, metrics, and connections — to the study of probability distributions and statistical models
L_5_07 — Genetics of Speech and Language: Beyond FOXP2
Language is humanity's most distinctive cognitive ability — and identifying its genetic basis has been a central goal of human genetics and neuroscience since the discovery of the KE family and the FOXP2 gene. The KE fam
Y_2_03 — Reincarnation Research — Stevenson, Tucker, Past-Life Memories
Reincarnation research — the systematic, empirical investigation of claims that individuals (typically young children) possess verified memories of previous lives — represents one of the most methodologically rigorous pr
H_1_09 — Translation Losses and Textual Transmission Chains
Before the printing press (1440s CE), all knowledge transmission depended on manual copying (scribal reproduction of manuscripts) and oral tradition — both inherently lossy processes. Every manuscript copy introduced pot
R_3_10 — Protein Evolution and Molecular Machines
Proteins are the molecular workhorses of life — catalyzing reactions, building structures, transporting cargo, transmitting signals, and defending against pathogens. They are also some of biology's most astonishing molec
F_1_17 — Austronesian Expansion: From Taiwan to Madagascar and Easter Island
The Austronesian expansion is the largest maritime diaspora in human history, spanning from Taiwan (c. 3500–3000 BCE) across the Pacific and Indian Oceans to ultimately reach Madagascar (c. 500–800 CE) in the west and Ra
ZE_5_12 — Ethics of Children: Rights, Development, and Moral Status
The ethics of children addresses a fundamental puzzle: children are full human beings deserving of moral respect, yet they lack the autonomy, rationality, and experience that ground many standard moral and political righ
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