When you think about the brain, it's difficult to understand, because if I were to ask you right now, how does the heart work, you would instantly tell me it's a pump. It pumps blood. If I were to ask about your
Si lo piensan, el cerebro es algo difícil de comprender porque si les pregunto cómo funciona el corazón, enseguida dirían que es una válvula que bombea sangre. Y si pregunto cómo funcionan los pulmones dirían