A blonde who had been unemployed for several months got a job with Public Works. She was to paint lines down the center of a rural road. The supervisor told her that she was on probation and that she must stay at or above the set average of two miles per day to remain employed.
The blonde agreed to the conditions and started right away. The supervisor checking up at the end of the day, found that the blonde had completed four miles on her first day, double the average!
"Great," he told her, "I think you're really going to work out." The next day, however, he was disappointed to find that the blonde only accomplished two miles.
The supervisor thought, "Well she's still at the average and I don't want to discourage her, so I'll just keep quiet."
The third day however the blonde only did one mile and the boss thought, "I need to talk to her before this gets any worse."
The boss pulled the new employee in and said, "You were doing so great. The first day you did four miles, the second day two miles, but yesterday you only did one mile. Why? Is there a problem? An injury, equipment failure? What's keeping you from meeting the two-mile minimum?"
The blonde replied, "Well, each day I keep getting farther and farther away from the bucket."