The act of looking at someone's eyes—the part of them that does the looking—creates an unbreakable feedback loop of "I know you know I know..." This immediately establishes common knowledge, forcing a resolution to the social game being played, whether it's a threat, a challenge, or an invitation.

Veiled threats or polite requests convey a message without making it "official" common knowledge. This preserves the existing social relationship (e.g., friends, colleagues) by providing plausible deniability, even when the underlying meaning is clear to both parties.

A six-year-old explained she cries when angry because crying makes her sister comfort her, while anger makes everyone run away. This reveals a fundamental social dynamic: we learn to express sadness to draw people in, while suppressing anger to avoid pushing them away, which can create a disconnect from our true feelings.

Unlike a spoken apology ("cheap talk"), a blush is an uncontrollable physiological response. It credibly signals to others that you acknowledge breaking a social norm, establishing common knowledge of your remorse and your acceptance of the norm itself. This makes the "apology" authentic.

When a norm is violated publicly, it threatens the common knowledge that the norm exists and is enforced. The resulting public punishment, like a digital-age pillory, isn't just about the transgressor; it's a signal to the entire community that the norm is still in effect, thereby restoring common knowledge.

Oxford naming "rage bait" its word of the year signifies that intentionally provoking anger for online engagement is no longer a fringe tactic but a recognized, mainstream strategy. This reflects a maturation of the attention economy, where emotional manipulation has become a codified tool for content creators and digital marketers.

We use hints and innuendo not to deny what we said, but to avoid a state where both parties know the other knows the true intent. This "common knowledge" can irrevocably change a relationship, whereas indirectness allows a shared fiction (e.g., a platonic friendship) to continue even after a proposition is rejected.

Masculine communication focuses on conveying semantic information, where understanding is confirmed by summarizing facts. Feminine communication aims to provoke a shared emotional experience. This disconnect causes conflict when men respond to the literal words women say, while women are trying to make their partner feel what they are feeling.

A growing trend in psychology suggests relabeling emotions like anger as “unpleasant” rather than “negative.” This linguistic shift helps separate the aversive sensation from the emotion's potential long-term benefits or consequences, acknowledging that many difficult feelings have upsides.