 (2) Sometimes getting P and P alone across by means of W would manifestly violate some maxim or other if S were in a position to vouch for any of various manifestly more desirable propositions by expressing one of them via any of various manifestly available sequences of words. In that case S may be designedly calling attention to, hence trying to vouch for the truth of, some plausible account of why she couldn’t do this—why her respect for the maxims actually puts each of these more desirable-looking contributions off limits.