I just read this little tale and have to share it:
There are two men in a home for the insane. Together they are planning an escape; They decide that if the wall surrounding the building is more than 6 feet tall they will dig under it, and if it is less they will help each other over it.
The night of the escape, the two split up.
One stays to stand guard, while the other runs off to inspect the wall
The one who went to check the wall returns with a sad look on his face;
“There is no hope,” he says; “We’re stuck. There is no wall”