These three errors is the difference between teleology and deontology, the good and the justice, efficiency and the equality.

• 功利主义没有考虑欲望满足方面的特性。而这三个错误在罗尔斯看来是目的论和道义论之间的差异、善与正义之间的差异、效率原则与平等原则之间的差别。