Probability simulation, not a physical ritual
The browser draws uniformly from sixteen slots: one gives 6, five give 7, seven give 8, three give 9. Thus 6/7/8/9 have probabilities 1/16, 5/16, 7/16 and 3/16. This model represents common yarrow probabilities without carrying out the divide-and-count stalk ritual. It differs from three coins.
Build from the ground
The first cast is the bottom line. 6 and 9 change; 7 and 8 remain. After six steps, inspect the base, relating and inner figures, each changing line’s original text and a reflection. A prepared example is clearly labelled and does not claim to be a live cast.