Significant theme in the story

This story teach each human being that life is not long as it looks, it is actually very short and that's why is important to appreciate what is given in it.

In a part of the story Sim's siste, dark tells him that this world of them was the way it was because of the scientists, meaning that scientist looking for impossible answers would just make everything worse.

Another way to look at this story is that when someone fight really hard for something they want the result at the end is the victory of reaching its goal, but as any other science fiction story it could be interpreted in many different ways. Every person has a differnt point of view on any subject.