The catalog
Every realm of the spine is a curriculum. Courses are ordered sequences of lessons drawn straight from the Manual’s taxonomy — pick a realm to start, or head to the quiz floor to test what you know.
Culture
Art, tradition, language, and the things people make.
Geography
Places, borders, and the shape of the world.
Health
The body, medicine, and public health.
History
What happened, who it happened to, and why it matters.
Human activities
Work, play, sport, and the crafts of doing.
Math
Number, shape, and the logic beneath them.
Philosophy
The big questions — meaning, ethics, and reason.
Religion
Faith, scripture, and the world’s spiritual traditions.
Science
The natural world and how we come to know it.
Self
Mind, emotion, and the study of the self.
Society
How people organize — law, government, and daily life.
Tech
Machines, code, and the tools we build.
Reference
The connective tissue — glossaries and cross-cuts.