Assertion: contradiction's negation | /r/HasProperty | taken
Facets:
Source sentences:
text: it profits not” to assert Φ, to assert ¬Φ, to assert both Φ and ¬Φ, or to assert neither Φ nor ¬Φ: the relevant negation can be taken to operate over an implicit modal, in particular an epistemic or assertability operator.