Playground
The knowledge, made visible
The deep field
The biggest hubs in three parallax layers — move your pointer for depth, hover a star and click to open the concept. Depth encodes connectedness, not a fabricated axis.
Move your pointer for depth · hover a star and click to open the concept.
Coverage matrix
Domains by thinking families: the brighter a cell, the more concepts sit at that intersection. Hover a cell to see which concepts live there. Dark cells are honest gaps.
Domain chord
How the nine domains connect through relations — each ribbon a bundle of cross-domain edges. Hover a domain to isolate its threads.
Domain sunburst
The hierarchy: nine domains inside, their disciplines outside, each sized by concept count. A discipline links to its lens.
Relation spectrum
The mix of relation types across the whole graph — part-of and applies-to carry the fabric, contradicts is rare.
24 relation types · 5051 edges total
Observability for knowledge
The control panel: the graph’s headline metrics and a tile per domain with its coverage. Every number is a real count — no vanity score.
Structural intelligence
Structural roles
Every concept as hub, bridge, connector, specialist or peripheral.
Structural core (k-core)
How many concepts sit in progressively deeper shells.
Hubs (by degree)
The most-connected concepts — connected ≠ more important.
Fragility (articulation points)
874 concepts whose removal would fragment parts of the atlas.
Boundary concepts (discipline span)
Concepts that touch the most disciplines.
Discipline interaction matrix
Canonical relations per discipline pair (top 12).
Dependency & learning
Gateway concepts (unlock the most)
Concepts the most others build upon.
Prerequisite-rich concepts
Concepts that build on the most others.
Transfer reach
Concepts reaching into the most disciplines they do not carry.
Evidence & epistemology
Evidence coverage by discipline (Tier A/B)
Share of concepts backed by a Tier A/B source.
Evidence gaps (unsourced)
Disciplines with the most concepts lacking a verified source.
Consensus landscape
The atlas by honest epistemic status.
History & people
Who shaped the atlas
Contributors by number of concepts attributed.
Kinds of contribution
Attributions by role — discoverer, inventor, formulator, founder…
Knowledge timeline
Real, sourced dates from antiquity to today — filter by discipline.
- c. 600 BCEMagnetism · First use · Physics
- c. 530 BCEPythagorean theorem · Formalization · Mathematics
- c. 500 BCEMusical scale · Discovery · Music Theory
- c. 450 BCEIrrational number · Discovery · Mathematics
- c. 300 BCEAlgorithm · First use · Computer Science
- c. 300 BCEAxiom · Formalization · Mathematics
- c. 300 BCEGolden ratio · Formalization · Mathematics
- c. 300 BCEMathematical proof · Formalization · Mathematics
- c. 300 BCEPrime number · Formalization · Mathematics
- c. 250 BCEBuoyancy · Discovery · Physics
- c. 250 BCELever · Formalization · Physics
- c. 250 BCEPi · Formalization · Mathematics
- 250 BCEArchimedes' principle · Formalization · Physics
- c. 150 BCETrigonometry · Formalization · Mathematics
- c. 150 CEMap projection · Formalization · Cartography
- c. 820 CEAlgorithm · Formalization · Computer Science
- c. 820 CEQuadratic equation · Formalization · Mathematics
- c. 1021Refraction · Formalization · Physics
- 1202Fibonacci sequence · Publication · Mathematics
- 1413Perspective drawing · Formalization · Painting
- 1607Telescope · Formalization · Astronomy
- 1609Kepler's laws of planetary motion · Formalization · Astronomy
- 1619Kepler's laws of planetary motion · Formalization · Astronomy
- 1678Hooke's law · Publication · Physics
- 1787Electrolysis · Discovery · Chemistry
- 1817Comparative advantage · Discovery · Economics
- 1825Benzene · Discovery · Chemistry
- 1831Faraday's law of induction · Discovery · Physics
- 1831Electromagnetic induction · Discovery · Physics
- 1831Standing wave · Discovery · Physics
- 1839Cell theory · Formalization · Biology
- 1842Doppler effect · Formalization · Physics
- 1858Natural selection · Discovery · Evolutionary Biology
- 1859Natural selection · Publication · Evolutionary Biology
- 1866Mendelian inheritance · Publication · Biology
- 1869Periodic table · Formalization · Chemistry
- 1896Radioactive decay · Discovery · Physics
- 1897Electron · Discovery · Physics
- 1900Quantum mechanics · Publication · Physics
- 1902Hormone · Discovery · Biology
- 1905Mass–energy equivalence · Formalization · Physics
- 1905Special relativity · Formalization · Physics
- 1912Continental drift · Discovery · Earth & Space Sciences
- 1912Gini coefficient · Publication · Economics
- 1915General relativity · Formalization · Astronomy
- 1920Proton · Discovery · Physics
- 1923Photon · Discovery · Physics
- 1927Big Bang · Discovery · Astronomy
- 1927Hubble–Lemaître law · Discovery · Astronomy
- 1929Hubble–Lemaître law · Publication · Astronomy
- 1932Neutron · Discovery · Physics
- 1935Richter scale · Formalization · Earth & Space Sciences
- 1936Turing machine · Formalization · Computer Science
- 1936Inner core · Discovery · Earth & Space Sciences
- 1944Game theory · Publication · Economics
- 1945Computer · Discovery · Computer Science
- 1947Transistor · Discovery · Computer Science
- 1948Shannon entropy · Publication · Information Theory
- 1950Game theory · Formalization · Economics
- 1950Nash equilibrium · Formalization · Economics
- 1953DNA · Discovery · Molecular Biology
- 1953Hash table · Discovery · Computer Science
- 1955Linked list · Formalization · Computer Science
- 1958Integrated circuit · Discovery · Computer Science
- 1964Cosmic microwave background · Discovery · Astronomy
- 1965Big Bang · Experiment · Astronomy
- 1960sPlate tectonics · Formalization · Earth & Space Sciences
- 1968Tragedy of the commons · Publication · Economics
- 1969Internet · Formalization · Computer Science
- 2012CRISPR-Cas9 · Discovery · Biotechnology
- 2015Gravitational wave · Discovery · Astronomy
Mental models & formal structure
Mental-model reach
How many disciplines each pattern recurs in.
How often practised
Concepts that exercise each pattern.
Equations by discipline
Concepts carrying a canonical equation, per discipline.
About this view
A growing collection of interactive information graphics over the same real graph — each a different way of looking.
Hand-rolled SVG straight on the background, glowing marks, self-drawing — not a chart in a box.
Every figure is computed server-side from real data; no fabricated numbers, no score. Motion rests under reduced-motion.