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The method created the instance variables, name and age, and assigned the values to them that you passed as the arguments, "Lula" and 6, respectively. Those instance variables are recognized throughout the instance, and so are accessible by all of its methods. You do not need to inform the description method about those variables. The two parameters, name and age, are unnecessary, and in fact, would make the description method cumbersome to use, because you would always need to pass two superfluous arguments to it.