← Taiji, from first principles
Experiment 01 · The Living Symbol

What is the Taiji symbol?

At rest it is wuji — undivided, without distinction. Push it, and yin and yang are born.

drag the circle
yin 陰
yang 陽
undivided — no distinction yet
無極
wújí
undivided
the ball on the hill

Resting drift: real center-of-pressure from the Santos & Duarte (2016) human-balance dataset (CC0). Symbol construction & cosmology after Zhou Dunyi, Taijitu shuo.

Experiment 01 · interactive · field notes

Can the wuji→taiji transition — undivided stillness breaking into yin and yang — be felt rather than read?

What it shows

At rest the symbol is wuji — one undivided field, no distinction yet. Your push does two things at once: it gives birth to the division (yin and yang appear together, never one without the other) and it flows the conserved whole toward the leading half. The two shares always sum to 100 — a conserved quantity being distributed, not created. Push harder and the symmetry breaks, like a ball rolling off the crest of a hill: the wuji → taiji arc, in a single gesture.

Method

The symbol is drawn by SVG construction after Zhou Dunyi’s Taijitu shuo, and the yin/yang split with its “ball on the hill” is a spontaneous-symmetry-breaking reading of that cosmology. Even at rest the field drifts along a real quiet-standing center-of-pressure trace (Santos & Duarte 2016, CC0) — stillness is measurably not static.

Journal

  • 2026-07-17 — Built as Experiment 01, the first of the interactive series. The aim was to make the wuji → taiji transition something you feel in the hand — push the undivided field and watch the division be born and then break — rather than something you read about.

Sources & further reading

  1. Zhou Dunyi. Taijitu shuo (Explanation of the Diagram of the Supreme Ultimate)
  2. Santos & Duarte. A data set with kinematic and ground reaction forces of human balance (2016)