Your knowledge map
Learn in the order knowledge is built
Every concept sits in a graph: what it builds on, what it opens up, and what makes it deeper when you come back. Prove each one with a short quiz and watch your map light up.
Domains
Human knowledge, by field. Open one to see its concepts in the order they build on each other.
Astronomy
10 concepts
Cosmology · Exoplanets and Life · Galaxies · Gravity and Orbits · Light and Telescopes · Stars · Stellar Remnants · The Sky · The Solar System
Biology
9 concepts
Chemistry
9 concepts
Computer Science
26 concepts
Cloud Native · Programming · Systems
Finance
8 concepts
Language
11 concepts
English
Math
15 concepts
Algebra · Calculus · Number Systems
Philosophy
92 concepts
Epistemology · Ethics · Logic · Metaphysics · Philosophy of Science
Physics
16 concepts
Measurement · Mechanics
How the graph works
- 1
Prerequisites
A concept opens once what it builds on is mastered, so you're never asked to learn something that can't make sense yet.
- 2
Depth
Concepts have depths. Some deeper ones open only after you learn a later concept — you come back and see the old idea differently.
- 3
Review
What you've learned comes back for review at growing intervals, so it stays learned.