Banta Singh got tired of being the butt of jokes and decided to do his PhD. Banta was looking out for a unique subject write his thesis when he saw a cockroach.
Banta placed the cockroach on the table and cut one of its legs. Then he said “WALK”. The cockroach moves forward.
Then Banta cut its second leg and commanded “WALK”. The cockroach manages to moves forward.
Then Banta cut its third leg and commanded “WALK”.The cockroach manages to wriggle forward on one leg.
Finally Banta cut its fourth leg and said WALK".The poor cockroach couldnot move and lay helplessly on the table.
He repeats the same with over 1000 cockroaches. He finds that the results in all his experiments match. Banta is jubiliant, “NOW” says Banta:
“MY THESIS IS READY” and proceeds to write it.
“WHEN YOU CUT FOUR LEGS OF A COCKROACH IT CAN’T HEAR”!!