Acharya Prashant addresses a child's question about how humans can speak if they are made of earth or matter. He explains that speaking does not require consciousness or a soul; it is a mechanical process of vibration and reaction. Just as a microphone, a radio, or a mobile phone can produce sound without being alive, the human body functions as a mechanical instrument. He uses the example of Newton's law of action and reaction to show that most human speech is merely a reactive response to external stimuli, much like the sound produced when one stomps their feet on the ground or when water boils due to heat.
