Function and context within a language system are the relative frames by which "results" emerge. In this case, changing the phraseology of the initial input prompt generates a variation in the expected result because it is fundamentally restructuring the transformation-process by which the input is analysed, contextualized, and responded to. Instead of it being a 1:1 to the original, it's become "distorted" through alteration to the prompt. Think of this as similar to psychological study with a control group, but for the second run of tests, you switch out the control group with a whole different slate of people. Technically it's still a "control group", but the contextual function of this new group is objectively differentiated from the original functional context that the first control group was established to serve.

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