Two economists are debating whether the target rate of unemployment is 4 percent or 6 percent. Mr.

Question:

Two economists are debating whether the target rate of unemployment is 4 percent or 6 percent. Mr. A believes it's 4 percent; Ms. B believes it's 6 percent. One says the structural deficit is $40 billion; the other says it's $20 billion. Which one says which ? Why ?