How individuals can be defined by a single event and there subsequent attempts to disguise or eradicate the event? Explain according to Death of a Salesman by Arthur Miller?

One example of an event that defined one of the characters in Willy's extramarital affair in Boston, and Biff's discovery of that affair. As a result of finding his father with another woman, Biff lost all respect for Willy, and in turn, lost all desire to live up to the standards his father had set for him. His decision to skip summer school, drop out of high school, miss out on college, and to give up sports were all Biff's way of getting revenge for Willy's adultery. In the end, he has nothing that makes him happy and continues to live aimlessly.