All stages · Demo 179
BMI mill
Choice adult / child / preg. BMI is kg over height squared. Jev never divides. ≥30 hatches obese; children never use the adult gate.
A cyan dial that goes magenta at 30. 70 kg at 1.75 m lights 22.9. A paediatric 15.3 stays PEDS.
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STANDBY
Educational stage on jev.page — not the official TypeSafe console. Live calls go to POST https://api.typesafe.ai/v1/systemone from your browser when you paste a key. Without a key, the stage plays a recorded decision shaped like jev-1.13.0. Jev does not write the UI copy.