Guns

In the echo world guns do not work, symbolizing the hollow nature of that world. Anything requiring external energy such as guns or fire or technology does not work in the echo world because it cannot be powered there. This lack of energy symbolizes the fact that nothing can be created in the echo world - it can never change by itself and is only a reflection of the living world.

Fire

Fire is a symbol of Edmund's power in the echo world. Prior to Edmund's creation of fire in the echo world through his use of Simon, those in the echo world believed that it was impossible to use anything that required energy. By having Simon (under the influence of Edmund) pull off such a miraculous feat as building a roaring bonfire in the echo world, he solidifies his leadership of the Eaters and ensures...