A man who was unemployed for several months gets a job with Public Works. He was to paint lines down the center of a rural road. The supervisor told him he is on probation and that he must stay at or above the set average of 2 miles per day to remain employed. The man agreed to the conditions and starts the next day.
The supervisor checked and found that the man completed 4 miles on his first day. “Great，” he thought， “this man will really work out.”
The next day he learned that the man only accomplished 2 miles but the supervisor thought， “Well he is still at the average and I don't want him to get discouraged.”
The third day however the man only did one mile and the boss thought， “I need to talk to him.”
The boss pulled the new employee in and says， “Son， you were doing great. The first day you did 4 miles， the second day 2 miles， but yesterday you only did one mile. Why？ Is there a problem？ An injury， equipment failure， anything keeping you from meeting the 2 mile minimum？”
The man replied “Well， each day I keep getting farther and farther from the bucket.”