Gene and Finney decide to jump out of the tree together. Gene has always had a fear of jumping out of the tree. This fear of his goes away once Finney falls out of the tree onto the bank. Gene's fear of jumping vanishes because he is thinking about Finney and is scared for him and is panicking. His fear for Finney takes over his fear of jumping. Gene being scared of jumping in the first place made him push a limb and knock over Finney. "Holding firmly to the trunk, I took a step toward him, and then my knees bent and I jounced the limb." (Knowles, 60)
This incident was Gene's responsibility because his fear of jumping made him push Finney off the edge.