The index

50 modules

01 Weight & Mass How much things weigh, from paperclips to cars Numbers & Scale
02 The Human Body Hair, vital signs, bones, senses, chromosomes, and the body in numbers Body & Health
03 Geography & Distance Countries, oceans, and how far things are Earth & Space
04 Nutrition & Food Labels Calories, macronutrients, and how to read what is in your food Body & Health
05 Money & Economy Millions, billions, GDP, inflation, debt, and financial scale Numbers & Scale
06 Big Infrastructure Bridges, dams, airports, and mega-projects Science & Tech
07 Time & Scale Seconds to centuries, building time intuition Numbers & Scale
08 Speed & Duration How fast things move and how long things take Earth & Space
09 Size & Scale Atoms to galaxies, orders of magnitude Numbers & Scale
10 History Anchors A navigable map of the last 5,000 years Society & Systems
11 Temperature From absolute zero to the surface of the Sun Earth & Space
12 Probability & Risk Odds, chance, and how to think about risk Numbers & Scale
13 Percentages & Ratios Mental math tricks for everyday numbers Numbers & Scale
14 Materials Steel, concrete, wood, what things are made of and why Science & Tech
15 Chemistry Functional groups, reactions, and molecular logic Science & Tech
16 Engineering Rules of Thumb Quick estimates for how things are built Science & Tech
17 Politics Government systems, institutions, power, and political language Society & Systems
18 Diplomacy International organizations, treaties, and soft power Society & Systems
19 Culinary Arts World cuisines, sauces, techniques, etiquette, and cooking science Culture & Arts
20 Drinks Spirits, cocktails, wine, beer, and coffee Culture & Arts
21 Fashion Fabrics, brands, dress codes, and style Culture & Arts
22 Sleep Cycles, stages, hygiene, and circadian rhythms Body & Health
23 Sex, Gender & Orientation Biology, identity, and social constructs Body & Health
24 Fitness & Exercise Lifts, cardio, programming, and body mechanics Body & Health
25 Weather Fronts, clouds, pressure, and forecasting Earth & Space
26 Space & the Solar System Planets, distances, and cosmic scale Earth & Space
27 Psychology Biases, memory, motivation, and mental models Mind & Meaning
28 Philosophy Ethics, logic, epistemology, and big questions Mind & Meaning
29 World Population & Demographics How many of us there are, how fast we are growing, and what the numbers mean Numbers & Scale
30 Art Movements, techniques, and visual literacy Culture & Arts
31 Literature Language, narrative, and the written word as art form Culture & Arts
32 Painting From pigment to meaning, the oldest and deepest visual art Culture & Arts
33 Music Sound, time, and the art of organised listening Culture & Arts
34 Cinema Moving images, time, and the grammar of film Culture & Arts
35 Game Interactivity, play, and why games define the 21st century Culture & Arts
36 Management How organisations work, decisions get made, and what the MBA actually teaches Society & Systems
37 Technology How computers work, how the internet runs, and what AI actually is Science & Tech
38 Crypto Blockchain, Bitcoin, DeFi, and the problems of decentralised finance Numbers & Scale
39 Law & Legal Systems How societies write rules, enforce them, resolve disputes, and turn conflict into procedure Society & Systems
40 Language How language works, where it came from, and what it does to thought Mind & Meaning
41 Sports Why sport matters, how it works, and a deep dive into the world's game Body & Health
42 Animals The diversity, biology, behaviour, and human relationship with the animal kingdom Life & Environment
43 Physics The laws that govern reality, from falling apples to spacetime Science & Tech
44 Media How information is produced, packaged, sold, and believed Society & Systems
45 Religions What religions are, why humans have them, and the major traditions Culture & Arts
46 Fear The biology, psychology, culture, and clinical shape of our oldest alarm system Mind & Meaning
47 Logic The rules of valid reasoning, formal systems, and the paradoxes that break them Mind & Meaning
48 FIRE Finance, insurance, and real estate: industries that price and allocate capital Society & Systems
49 Health & Medicine The human body, what goes wrong, and how to make good health decisions Body & Health
50 Ecosystems, Climate & Sustainability Living systems, Earth's climate, human impacts, and sustainable futures Life & Environment