There is a guy/girl in city. He/she is unemployed. Everyday he/she gets up and diligently looks for work; and always gets turn down. He/she has been through this before, and manages to find something. So he/she continues to knock at doors. Sometimes hundreds. I stranger sees him all the time . This time he stops him and asks. Why do you try so hard? The guy/girl says... because I CAN.