[Related to Solved Problem 10.1 on page 325] In a column on bloomberg.com, Noah Smith noted that people who work at a computer have many ways to slack off or waste time—posting to Facebook, Twitter,...

[Related to Solved Problem 10.1 on page 325] In a column

on bloomberg.com, Noah Smith noted that people who

work at a computer have many ways to slack off or waste

time—posting to Facebook, Twitter, or Instagram; watching YouTube videos; or playing video games—that weren’t

available to workers in previous decades. Smith calculated that “the average working American spends about