Surgical specialists earn more than general/family practice physicians. Which of the following statements is not true regarding this income differential?
Surgeons earn more because their practice costs, including medical malpractice insurance is higher.
Surgeons earn more to compensate them for the extra years spent as residents.
Physicians' incomes are determined to a large extent by supply and demand conditions with respect to each specialty.
Surgeons will always earn more than general practitioners because they are smarter than general practitioners.