Sandra Matz is a computational social scientist at the Columbia Business School in New York City.

纽约市哥伦比亚商学院的计算社会科学家桑德拉·马茨说到。

Matz thinks a factor could be that agreeable people just don't care much about money.

马茨认为，其中一个原因可能是“老好人”不太在乎钱。

So if Matz does succeed in teaching nice people to be more stingy, who then will pick up the tab?

如果马茨成功地教好人变得小气，那以后谁来付账呢？