Eight men have been at a mental hospital for a period of time and are being tested to find out how they are progressing in order for them to leave the institution. The doctor in charge takes them all into a room and with a ball pen draws a door on the wall and asks each one of the patients to try and open the door for him as part of the test. Seven of them rushed out and attempted to open the door on the wall. The doctor was disappointed with the results but never the less call on the last one who was still sitting down and asked him why didn’t he stand up and try to open the door with the others. The eighth man replied: “because I was holding the key to the door”