Sure you do
Why do you keep insisting there's a need to apply an identity function? Or are you saying decoding ASCII isn't an identity function? It's hard to tell since you're nay-saying without any explanation.
You are saying that a sentence of the form "X is an encoding of Y" is broken in English [if] Y isn't an encoding?
I seem to have misread what you said. (Perhaps I missed the "of"?) Striken.