What is oncept of "Salesman" in Death of a Salesman ?

Willy believes that in order for a salesman to be successful he has to have certain characteristics. He believes that the most important of these characteristics are good looks, a winning personality, and a high degree of likeability. Who you know is more important that what you do; looks and personality are more important than hard work and determination. Unfortunately, this belief didn't work out so well for him.