 “Relevance” is given a highly technical sense, in which the relevance of a proposition in a context is directly related to how many positive cognitive effects it has and inversely related to how much effort is required to process it (Wilson &amp; Sperber 2012: 6, 62–3,  219).[51]  “Positive cognitive effects” are “improvements in knowledge”, including “true contextual implications, or warranted strengthenings or weakenings of existing assumptions”. Contextual implications are propositions logically implied by the proposition and the cognitive context together but from neither alone. Propositions or assumptions are objects of belief or knowledge—cognitive representations. Wilson and Sperber illustrate their concept by imagining a doctor whose choice of true statements is confined to the alternatives in (14).