The disciplines of general philosophy, philosophy of language, and linguistics have in common an interest in saying what it is that we can infer: what meaning, what truth; and how those inferences are to be justified. To do this, philosophers and linguists have endlessly discussed the concepts of truth and of meaning, and also the means of inference and its degrees of reasonableness and reliability. These debates do not narrow down to definitive answers, rather they broaden and spread their concerns into ever-widening fields of investigation [...].