0. CORE BUG (CURRENT FAILURE) ❌ CURRENT BEHAVIOR: fingers do not intersect pill trajectory → no real interception occurs → pill avoids fingers or “passes cleanly above” 👉 RESULT: no impact realism 1. NEW CORE RULE (CRITICAL FIX) 👉 FINGERS MUST INTERSECT OBJECT PATH finger_trajectory MUST cross pill trajectory BEFORE pill passes below finger line ❌ no avoidance ❌ no early retraction ❌ no “missed attempt without contact” 2. REQUIRED CONTACT EVENT (HARD FORCE) CONTACT MUST OCCUR BETWEEN: pill fingertip (ONLY index finger tip is primary impact point) ✔ collision is mandatory ✔ visible impact is required ✔ timing must be physically plausible (not avoided) 3. HAND MOTION MODEL (FIXED INTENT) thumb + index + middle fingers move upward forming attempted pinch / catch trajectory fingers accelerate toward falling pill BUT: ❌ motion is NOT allowed to “wait for perfect timing” ❌ no avoidance correction ❌ no trajectory dodge 4. CONTACT OUTCOME RULE (CRITICAL) When pill hits fingertip: ✔ clear imp
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