— 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 smooth animation and reasonable physics, but fundamentally misses the prompt: no two crowns, no vertical slider controlling crown submersion, no fall/splash animation, no Heureka moment, and uses a dark background — essentially a different app than what was requested.
11,057 output tokens · claude-opus-4-6 · end_turn
Competent general Archimedes simulator with smooth animation and reasonable physics, but fundamentally misses the prompt: no two crowns, no vertical slider controlling crown submersion, no fall/splash animation, no Heureka moment, and uses a dark background — essentially a different app than what was requested.