Are You suprised ?

5.5. Stylistic Use of Structural Meaning
Every syntactic structure has its definite function, which is sometimes called structural meaning. When a structure is used in some other function it assumes a new meaning which is similar to lexical transference of meaning. This can be seen in two syntactic SDs:
Rhetorical Question is a special SD, whose essence consists in reshaping the grammatical meaning of the interrogative sentence. I.e. the question is no longer a question but a statement expressed in the form of an interrogative sentence. Thus there is a simultaneous interplay of two structural meaning: 1) that of the question and 2) that of the statement (either affirmative or negative).