A man was brought into the psychiatric ward of a hospital because he would scream and shout all night long while throwing furniture out of his windows.
Once admitted the psychiatrists prescribed tranquilizers to calm his mood but on the first night he continued to walk up and down the ward shouting and cussing at people who did not exist, this as you can imagine could not be allowed to continue, so the surgeons reluctantly performed a labotomy to eliminate the voices in his head
A few days later when he had recovered from the surgery the surgeons went to visit the patient to see how he was doing.
To their dismay the patient was still stomping up and down the ward only this time he was shouting to the non-existant people " Speak up .. Speak up I know you can hear me"