[ Formula structure ]
The public formula describes structure.
- PCS = combine(fixed, context, culture, adaptive)
- Private calibration, weighting, and evidence ranking stay protected.
[ How to read it ]
The metric supports screening, not certification.
- A high PCS means the pictogram has strong evidence of meaning transfer in the stated context.
- A low PCS means the pictogram carries meaningful clarity risk and needs redesign, labels, context, or testing.
- Every reading depends on declared context and evidence quality.
- Human validation remains first-order evidence.