RESEARCH BASE

Search 3,721 documents across 34 fields — every claim tier-rated by evidence

3,721 documents 34 sections 43,623 citations 34,854 keywords indexed 4 evidence tiers

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.

1,483 results for "evolution of instruments" — page 72 of 75

T_1_00 Psychology & Social

T_1_00 — Foundations Theories: Subfolder Summary

B_1_20 Credible Beings & Entities

B_1_20 — Trickster Deities: Cross-Cultural Comparison

The trickster is among the most widespread deity archetypes in world mythology, appearing independently across every inhabited continent. Characterized by cunning, boundary-crossing, shapeshifting, and the subversion of

trickster-deity loki anansi coyote hermes sun-wukong
ZD_1_17 Credible Information & Computation

ZD_1_17 — Integrated Information Theory

Integrated Information Theory (IIT) is a mathematical theory of consciousness developed by Giulio Tononi (University of Wisconsin-Madison, 2004; IIT 3.0, 2014; IIT 4.0, 2022) that attempts to explain what consciousness i

integrated-information-theory iit consciousness phi giulio-tononi qualia
ZD_3_04 Verified Information & Computation

ZD_3_04 — Operating Systems and Concurrency

Operating systems (OS) — the software layer managing hardware resources and providing abstractions for applications — are among the most complex software artifacts ever built. They manage process scheduling (deciding whi

operating system process management concurrency thread mutex semaphore
ZD_3_13 Verified Information & Computation

ZD_3_13 — Cloud Computing: Virtualization, Services, and Distributed Infrastructure

Cloud computing is the delivery of computing resources — servers, storage, databases, networking, software, analytics, and intelligence — over the Internet ("the cloud") on a pay-as-you-go basis, transforming computing f

cloud computing IaaS PaaS SaaS AWS virtualization
ZD_5_00 Information & Computation

ZD_5_00 — Digital Culture Tools: Subfolder Summary

ZD_2_08 Credible Information & Computation

ZD_2_08 — Penrose and Computation: Non-Computability, Consciousness, and Gödel's Theorem

Roger Penrose (b. 1931), Nobel laureate in physics (2020, for demonstrating that black hole formation is a robust prediction of general relativity), has advanced an influential and controversial argument that human mathe

Penrose Gödel non-computability consciousness quantum gravity orchestrated objective reduction
Verified

ZD_2_02_Artificial_Intelligence_Foundations

Artificial intelligence (AI) — the field devoted to creating machines that exhibit intelligent behavior — was formally founded at the Dartmouth Conference (1956) organized by John McCarthy, Marvin Minsky, Nathaniel Roche

artificial intelligence Turing test symbolic AI connectionism neural network expert system
L_1_08 Genetics & Origins

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

Denisovans Denisova Cave archaic hominin Homo denisova introgression admixture
L_1_12 Verified Genetics & Origins

L_1_12 — Ghost DNA: Unknown Archaic Hominin Admixture

"Ghost DNA" refers to genetic signals — segments of the genome, deviations in allele frequency distributions, or anomalous phylogenetic patterns — that indicate admixture (interbreeding) between anatomically modern human

ghost DNA archaic admixture unknown hominin introgression ancient DNA aDNA
L_1_16 Verified Genetics & Origins

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

denisovans denisova-cave ancient-dna introgression epas1 altitude-adaptation
L_4_07 Verified Genetics & Origins

L_4_07 — Twin Studies and Heritability

Twin studies represent one of the most powerful natural experiments in human genetics, exploiting the fact that monozygotic (MZ, "identical") twins share ~100% of their DNA while dizygotic (DZ, "fraternal") twins share ~

twin study monozygotic dizygotic heritability concordance ACE model
L_4_00 Genetics & Origins

L_4_00 — Methods Ancient DNA: Subfolder Summary

L_4_06 Verified Genetics & Origins

L_4_06 — Epigenetics and Transgenerational Inheritance

Epigenetics — the study of heritable changes in gene expression that occur without alterations to the DNA sequence itself — has transformed modern biology by revealing a layer of regulatory information "above" the genome

epigenetics DNA methylation histone modification chromatin transgenerational inheritance imprinting
L_0_00 Genetics & Origins

L_0_00 — Genetics & Human Origins: Section Summary

L_2_02 Genetics & Origins

L_2_02 — Population Genetics and Hardy-Weinberg Equilibrium

Population genetics — the mathematical study of allele frequency change in populations — provides the quantitative framework underlying evolutionary biology. The Hardy-Weinberg principle (1908), independently derived by

population genetics Hardy-Weinberg equilibrium allele frequency genetic drift natural selection migration
L_2_17 Verified Genetics & Origins

L_2_17 — Pacific Islander Genetics: Austronesian Ancestry, Denisovan Introgression, and Oceanian Genomics

Pacific Islander populations — spanning Melanesia, Micronesia, and Polynesia — harbor some of the most genetically complex and scientifically informative genomes in human biology. Their genetic history records multiple d

Pacific Islander genetics Oceanian genomics Denisovan introgression Polynesian motif Austronesian ancestry Melanesian genetics
L_2_00 Genetics & Origins

L_2_00 — Population Regional Genetics: Subfolder Summary

L_2_18 Verified Genetics & Origins

L_2_18 — Archaic Admixture in Africa (Ghost Populations)

While Neanderthal and Denisovan admixture in non-African populations has been well-documented since Svante Pääbo's landmark 2010 Neanderthal genome paper, evidence for archaic admixture within Africa represents a more re

archaic admixture ghost population African genetics ancient DNA introgression archaic hominin
L_3_14 Verified Genetics & Origins

L_3_14 — Genetic Bottleneck Recovery and Founder Effects

A genetic bottleneck occurs when a population's size is drastically reduced, causing a random loss of genetic variation (alleles) that cannot be recovered through subsequent population growth. Founder effects are a speci

genetic-bottleneck founder-effect population-genetics toba-catastrophe effective-population-size heterozygosity