Can you explain the metaphor of the lamp flame that's used in Chapter 8 to describe the human body?

In Chapter 8, a powerful analogy is used to explain the transient nature of the physical body. The text compares the body to the flame of a lamp, which appears to be the same from beginning to end but is actually different every single moment. This metaphor illustrates that although our bodies seem singular and continuous as they pass through childhood, youth, and old age, they are in a constant state of flux. As Chapter 8 explains, what is seen one moment perishes in the next. This highlights the impermanence of our form, which is described as a foul place subject to death at any moment.