The Tactic of Argument by Rhetorical Question occurs when a question is asked, but an answer isn’t expected. The question is asked to make a statement rather than to learn anything. Often, this tactic is used by asking a question and then answering it. Otherwise, the tactic is used to create an impression of a certain answer being obvious when that answer is not obvious.
Bill Nye arguing against Creation science: “. . . is that really reasonable?” “. . . which I think is pretty reasonable” “Is that reasonable?” “Is it reasonable that Noah . . .” “. . . this would be a reasonable place . . .” “. . . it’s reasonable to say . . .” “. . . Adolphe Quetele, who remarked first about the reasonable man. Is it reasonable that we have ice older by a hundred than you claim the Earth is?” “. . . That seems a much more reasonable explanation . . .” “So it’s reasonable to me that . . .” “. . . I, as a reasonable man,” “. . . it’s very reasonable perhaps to you that Noah had super powers . . .” “. . . to me it’s just not reasonable.” “And it’s just not reasonable to me . . . “ “It’s just not reasonable to me . . .“ “. . . and isn’t it reasonable that . . .” “. . . evidence for me at least, as a reasonable man, is overwhelming . . .”