First, there is the straightforward work of adding up the costs of education, such as teacher training and compensation, school construction and maintenance, and even the opportunity cost of child labor. Then there is the more ambiguous process of assessing the benefits, which, though difficult to quantify, are convincing enough that many economists champion early education.
首先，将教育成本——如教师培训和薪酬、学校建设和维护，甚至童工的机会成本等——加总，这个工作比较清楚。然后是比较模糊工作——评估收益。尽管收益难以量化，但也足以说明问题，以至于许多经济学家都支持早教。