The average employee can make 7 widgets an hour in factories across North America.
Bob can make 10 widgets and hour in a factory in Miami
Frank can make 10 widgets an hour in a factory in Cleveland
Enzo can make 8 widgets an hour in a factory in Toronto
To save money, ACME Widgets Miami decides to employ all 3 in one factory. Problem is, there are only 2 widget machines in Miami. Bob and Frank, with their spectacular 10 widgets an hour output will usually be working the widget machines. Every once in a while they get Meta world Peace flu or a Tyson Chandler sick day, so Enzo gets to use one of the widget machines. On those days, he produces his usual 8 widgets an hour.
Too bad for Enzo though. He usually uses the Spud 2000 machine in Miami. He can produce 7 widgets an hour with that. So he's contributing and the company is prospering, and Bob and Frank are getting quite a few accolades for their production, as usual.
But I can't shake the feeling that Enzo might be wasting 1 widget an hour using the Spud 2000 in Miami.