— Two crowns — Same mass, different density — Vertical slider ✓ Slider works — Slider controls crowns — Slider direction correct — Full slider range — Fall animation ✓ Water displacement — Rising water level — Splash effects ✓ Physics correct ✓ Live mass value ✓ Live volume value ✓ Live density value ✓ Live displaced water — Gilded displaces more — Heureka animation ✓ No external deps — Light bg / dark text ✓ Self-contained HTML
Competent general Archimedes simulator with correct physics and live readouts, but entirely misses the prompt's core requirements: no crowns, no two-object comparison, no vertical fall-into-water slider, no splash effects, no Heureka animation, and dark background violates the light-bg spec.
Competent general Archimedes simulator with correct physics and live readouts, but entirely misses the prompt's core requirements: no crowns, no two-object comparison, no vertical fall-into-water slider, no splash effects, no Heureka animation, and dark background violates the light-bg spec.