What Ayres was trying to do was zero in on a very specific question: all other things being absolutely equal, how does skin color or gender affect the price that a salesman in a car dealership offers?

• 艾尔斯想在一个非常具体的问题上寻找答案，即如果其他条件全部相同，人的肤色和性别在多大程度上影响销售员的报价。