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Rational people make decisions at the margin by
Sound Waves
Vibrations that travel through air or another medium and can be heard when they reach a person's or animal's ear, fundamental to the perception of sound.
Frequency
The number of occurrences of a repeating event per unit of time, often measured in cycles per second or Hertz.
Cochlea
A spiral-shaped, fluid-filled inner ear structure responsible for converting sound waves into nerve impulses that are interpreted by the brain as sound.
Eardrum
A thin membrane that separates the outer ear from the middle ear, vibrating in response to sound waves and initiating the process of hearing.
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