Sane or insane?

During a visit to a psychiatric institute, a visitor asks the director on what criteria do we base ourselves to know if a person must be committed.

"Well", said the director, "we fill a bathtub with water and we give the patient the choice of a spoon, a cup, or a bucket, and ask him to empty the bathtub."

"Ah, I see", said the man. "A sane person would normally choose the bucket, since he could empty more water than with a spoon or a cup!"

"No", replied the director. "A sane person would pull the plug. Would you like a room with a view?"