A science joke that involves mental illness

http://www.jupiterscientific.org/sciinfo/jokes/miscellaneousjokes.html

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     A scientist who enjoyed considerable success during the first half of his life was eventually knighted. His name was Sir Ramick. Unfortunately, he developed a mental illness in his early fifties in which he had a split personality: he was a scientist most of the time and a murderer during brief "bad periods". 
     During his first "bad period", he got into an argument with a taxi driver over the amount of a fare and sliced the driver's throat. He went to jail, was prosecuted, found guilty and placed on death row. On the day of his electrocution, the executioner asked Sir Ramick if he had any last requests. He responded, "I would like to eat 10 bananas before I die." It seemed like a harmless request and so Sir Ramick was granted his wish. He promptly ate 10 bananas and said confidently, "Put me in the chair now." When the executioner flipped the switch, nothing happened. Now, in the country where Sir Ramick resided, there was an unusual law that said if the execution of a death-row inmate fails due to an act of God or any other reason then he should be set free. Sir Ramick happily left the execution facility and went home to work on a new science project. 
     A month later, he went for a walk during a beautiful evening lit by a full moon. Unfortunately, his bad personality emerged. He grabbed a teen-aged boy and threw him into a wide river. The boy was found dead the next day and Sir Ramick was again imprisoned. On the day of his execution, he again requested to eat ten bananas and again the electrocution apparatus failed to kill him. He exited the facility smiling.
     Two months later, the scientist went to church and shot a nun. The community was in an uproar. How could such a violent man be allowed to roam the streets, the citizens complained. They signed a petition to repeal the execution loophole law but it would be at least six months before the government would be able to respond. In the execution facility, Sir Ramick met the executioner for a third time and requested to eat 10 bananas as before. Knowing that Sir Ramick was a superb scientist, the executioner suspected that the scientist somehow was using his scientific knowledge to escape death. After a discussion with other members at the execution facility, Sir Ramick was granted his wish to eat 10 bananas for a third time. And again, the machine failed to kill him when the switch was flipped. 
     Just before going out the facility's main entrance, the executioner approached Sir Ramick and asked him, "I need to know what's going on. Is it the bananas?" To which, the scientist replied, "No, I'm just a bad conductor." 
See explanation
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(I had to look up the explanation on the website).