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Persuasion and Human Nature

Sep 9, 2025

Overview

This lecture explores why reasoning alone rarely changes minds in arguments, emphasizing the power of emotion, intuition, and the classical tools of rhetorical persuasion.

Human Nature and Reasoning

  • David Hume argued that people are primarily influenced by emotions and intuitions, not pure logic.
  • Reason acts as a "slave to the passions," serving our feelings rather than controlling them.
  • Modern psychology supports that quick, emotional judgments precede rational analysis.

The Rider and the Elephant Metaphor

  • The "rider" represents conscious reasoning, while the "elephant" symbolizes our intuitive, emotional side.
  • Persuasion is effective when it appeals to the elephant first; logic alone rarely moves someone.

Means of Persuasion: Rhetoric

  • Aristotle identified three persuasive tools: ethos (character), pathos (emotion), and logos (logic).
  • Effective persuasion blends all three, adapted to the audience and purpose.

Ethos: Character and Credibility

  • Ethos builds trust through credibility, goodwill, and integrity.
  • Establishing ethos involves sincerity, calmness, and a relatable reputation.

Pathos: Emotional Appeals

  • Pathos targets the audience's feelings, identity, and self-interest.
  • Humor, empathy, and storytelling are strong pathos strategies.

Logos: Logic and Reason

  • Logos persuades with clear arguments and supporting evidence.
  • Concessions—acknowledging valid points from the opposing side—can improve trust and open minds.

Case Study: Fred Rogers in the Senate

  • Fred Rogers demonstrated ethos, pathos, and logos in his successful Senate testimony.
  • His calm demeanor, emotional storytelling, and shared values swayed an initially skeptical audience.

Arguments vs. Fights

  • Arguments seek to win over others and solve problems; fights aim to defeat opponents.
  • Language shapes perceptions: framing arguments as dances (cooperation) is more effective than framing as war (conflict).

Caveats and Ethical Use

  • Persuasion tools can be used for deception, so awareness is necessary to avoid manipulation.
  • Civil discourse should precede protest; dialogue increases the chance for mutual understanding and change.

Best Practices for Persuasion

  • Build commonality and trust before presenting contentious points.
  • Use praise, humor, sincere interest, and stories to open dialogue.
  • Arguments are about relationship-building and mutual understanding, not just winning.

Key Terms & Definitions

  • Ethos — Persuasion by character and credibility.
  • Pathos — Persuasion by appealing to emotion and identity.
  • Logos — Persuasion by logic and reasoning.
  • Rider/Elephant Metaphor — Rider is rational mind; elephant is emotional intuition.

Action Items / Next Steps

  • Practice using ethos, pathos, and logos in everyday arguments.
  • Reflect on your own arguments: are you appealing to the elephant as well as the rider?
  • Observe persuasive techniques in media or public discourse.