Read the passage.
Student Designs Vietnam Veterans Memorial
Maya Lin was an architecture student at Yale University when she completed a special class assignment—a monument to veterans of the Vietnam War. The assignment was inspired by the October 1980 announcement of a national design competition for such a memorial to be built in Washington, D.C. Lin's professor gave her design only a B but encouraged her to enter it into the competition. More than 1,400 entries were submitted and judged anonymously. Most of the other entrants were trained architects, whereas Lin hadn't yet completed her degree in architecture. Yet Lin's design took first place, earning her $20,000 in prize money. She later wrote, "From the very beginning I often wondered, if it had not been an anonymous entry . . . but rather an entry by Maya Lin, would I have been selected?"
What is the main idea of the passage?