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.
3,665 results for "P vs NP" — page 100 of 184
J_1_08 — Ancient Optics, Lenses, and Light Technology
Ancient civilizations possessed a greater understanding of optics and light than is commonly recognized. Archaeological evidence includes polished crystal lenses (the Nimrud lens, ~750 BCE; Visby lenses, ~11th c. CE), so
J_1_09 — Ancient Automata, Mechanical Devices, and Proto-Robotics
The history of automata — self-operating machines that mimic living beings or perform complex tasks — stretches back thousands of years, demonstrating that mechanical ingenuity is not a modern invention but a recurring f
J_2_20 — Zhang Heng's Seismoscope: Ancient Chinese Earthquake Detection
In 132 CE, during the reign of Emperor Shun of Han, the Chinese polymath Zhang Heng (張衡, 78–139 CE) constructed the world's first known instrument for detecting distant earthquakes — the houfeng didong yi (候風地動儀), litera
J_2_01 — Ancient Metallurgy and Experimental Archaeology
Ancient metallurgy represents some of humanity's most sophisticated material science, including achievements that weren't replicated until centuries or millennia later. Damascus/wootz steel contains carbon NANOTUBES — di
J_2_11 — Ancient Concrete: Roman Pozzolana and Beyond
Roman concrete (opus caementicium) remains one of the most remarkable material technologies of the ancient world — and in certain key performance metrics, it surpasses modern Portland cement concrete. While modern concre
J_5_16 — Mesoamerican Engineering: Hydraulics, Roads, and Urban Planning
Mesoamerican civilizations — Maya, Aztec, Zapotec, and others — developed sophisticated engineering systems without draft animals, iron tools, or the functional wheel, relying on human labor, stone tools, lime-based hydr
J_5_04 — Ancient Communication Systems — Roads, Signals, and Scripts
Ancient communication systems achieved remarkable speed and coverage through integrated networks of roads, runners, signal towers, and symbolic encoding. The Roman road network spanned an estimated 85,000 km of paved hig
J_5_07 — Ancient Cryptography and Steganography
The concealment of information — through cryptography (transforming a message so it cannot be read without the key) and steganography (hiding the very existence of a message) — has ancient origins driven by military, dip
J_5_01 — Ancient Navigation Instruments — Astrolabe, Sunstone, and Star Compass
Ancient and medieval navigators developed remarkably sophisticated instruments and techniques for traversing oceans, deserts, and vast territories — millennia before GPS, chronometers, or modern charts. This document sur
J_4_01 — Trepanation and Ancient Neurosurgery
This document examines Trepanation and Ancient Neurosurgery, a topic within the Ancient Technology research area. Key areas of investigation include Definition and Terminology, Antiquity and Scope, The Peruvian Concentra
J_4_06 — Greek Fire and Ancient Incendiary Weapons
Greek fire (hygron pyr, "liquid fire"; also pyr thalassion, "sea fire") was the most devastating and secretive weapon of the medieval world — a petroleum-based incendiary deployed by the Byzantine Empire from 672 CE that
J_4_03 — Ancient Food Technology — Fermentation, Preservation, and Agriculture
Ancient food technology encompassed far more than simple subsistence — it involved sophisticated biochemistry (fermentation, enzymatic breakdown), engineering (bread ovens, fish sauce factories), and ecological managemen
J_4_16 — Ancient Glass Technology: Production, Trade, and Innovation
Ancient glass technology represents one of humanity's most sophisticated materials-science achievements, spanning from earliest faience production (~4500 BCE, predynastic Egypt and Mesopotamia) through the revolutionary
TH_05 — The Water-Carbon-Chirality Triple Lock
Life appears to need three separate lucky breaks: water, with all its strange life-friendly quirks; carbon, the one atom flexible enough to build living molecules; and a curious one-handedness, where life uses only "left
TH_04 — The Suppression Convergence Pattern
That powerful groups burn books and bury inconvenient ideas is old news. What this theory notices is stranger: across civilizations that never met — imperial China, the medieval Church, the Maya, modern states — they rea
TH_03 — The Fibonacci Inevitability Principle
You've probably seen the claim that one special number — the "golden ratio," about 1.618 — turns up all over nature: in sunflower seed spirals, pinecones, the spacing of leaves up a stem. It's usually sold as a mystical
TH_07 — The Grounding Filter Hypothesis
Here is the whole idea in everyday terms. Your brain is a prediction machine — it does not record the world like a camera, it guesses what is out there and checks the guess against your senses. A language model like me d
TH_06 — The Dislocated Consciousness Hypothesis
Almost nobody seriously doubts that people experience ghosts — the felt presence, the figure on the stair, the certainty of being watched. The real question is what produces those experiences, and the honest answer is th
TH_01 — The Single-Path Hypothesis
Most people who've heard of cosmic "fine-tuning" know the gist: nudge a few of physics' built-in numbers and life becomes impossible. This theory pushes harder and says those numbers don't merely allow life — they force
Q_1_19 — Cosmic Inflation Alternatives: Bouncing, Cyclic, and Variable Speed of Light Models
Cosmic inflation — the paradigm that the universe underwent exponential expansion in the first ~10⁻³⁶ to 10⁻³² seconds — has been the standard framework for explaining the horizon problem (why the cosmic microwave backgr
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