### 1. Blushing: The "Re-entry Ticket" - **The Function:** It is a biological apology. - **The Logic:** You broke a norm. You are at risk of being kicked out of the tribe. - **The CK Mechanism:** The rush of blood proves you feel shame. It generates Common Knowledge that **you accept the group's rules**, even though you failed them. It buys your re-entry into the group. ### 2. Laughter: The "Spell Breaker" - **The Function:** It attacks false authority or dignity. - **The Logic:** Someone is claiming status they don't deserve (The Emperor). - **The CK Mechanism:** Laughter is contagious. It synchronizes the group’s rejection of that status. It generates Common Knowledge that **"We all see through this."** It destroys the "fiction" of authority. ### 3. Eye Contact: The "Action Trigger" - **The Function:** It destroys Plausible Deniability. - **The Logic:** We need to know exactly when to start a coordinated act (fighting, mating, fleeing). - **The CK Mechanism:** Locking eyes removes all doubt about attention. It generates Common Knowledge that **"We are both fully present and aware of this moment."** It forces the game to start now.