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Many Minds

Dawn of the smile

Jan 11, 2024
This podcast explores the mystery and evolution of smiles, delving into their origin, types, and meanings. It discusses the two theories about the meaning of facial expressions, focusing on smiles. The research on laughter and its acoustic properties in primates is also examined. The episode explores the theories about the meaning and power of smiles, including their connection to physical play, playfulness, submission, laughter, and reward centers in the brain.
16:17

Podcast summary created with Snipd AI

Quick takeaways

  • Social smiles are primarily motivated by social interactions rather than pure emotion.
  • The smile is a universal human behavior with deep roots in primate displays of submissiveness and playfulness.

Deep dives

The Development of Smiles

Babies are initially born helpless and exhibit negative and involuntary behaviors. However, around six weeks of age, they begin to smile unambiguously. These early social smiles are big and goofy, evolving into more fine-tuned expressions. The largest smiles occur in the morning upon waking up. The smile is considered a powerful and primordial expression that seizes attention and warms us.

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