Now every question asked is bound to be either reputable or implausible or neither, and is also bound to be either relevant to the argument or irrelevant; if then it seems to be true and is irrelevant, the answerer should grant it and remark that it seems to be true; if it does not seem to be true and is irrelevant, he should grant it but add a comment that it does not seem to be true, in order to avoid the appearance of being a simpleton.