This paper presents a harmonious pragmatic account of the formerly unstudied syntactic-semantic and discourse-function attributes that differentiate SDRs from other utterances with identical negative implicatures and focus. Implicature and literal content switch roles: denial becomes at-issue; literal content, not. The propositional content thus solely adds to Relevance implicatures. It is stated that SDRs speakers’ flouting of the second, evidence part of Grice's Quality Maxim is responsible for all these properties, albeit such Quality II flouting is rare as evidenceless claims are mainly also inapposite ones.