Fatalism is an important part of the story because it is what perpetuates the action. The decisions that Tess makes and the things that happen to her in the beginning of the novel begin a domino effect that cannot be reversed. Her fate is already chosen and all she can do is live through the events that happen to her. The first view of fatalism is when Joan believes that she has read Tess's fate in an astrological book. According to the book, Tess is going to marry a gentleman. It sounds like a happy fate, and it turns out to be true, but Tess marries a gentleman that makes her life miserable, and she doesn't marry him until every chance for happiness seems to have passed her by.
Fatalism 2: Tess presents for the first time her view that the world she lives in is spoiled and rotten. This is a continuing view for Tess, especially in light of the events that unfold in her life.