By CARL RICHARDS

By recognizing the role of marginal utility, we can avoid the costly mistake of expecting the new shoes we buy today to make us happier than the pair we bought last week.

Published: December 16, 2013 at 5:00AM

via NYT Your Money http://www.nytimes.com/2013/12/16/your-money/how-to-react-to-diminishing-returns.html

via May 21st 2011 wrong http://may21st2011.wordpress.com/2013/12/16/998/