 The KK thesis has been associated with the notion of the infallibility of knowledge since ancient philosophers sometimes characterized the latter according to the former's terms.Plato's view on infallibility, for example, can be approached according to its framework, particularly concerning his position stated in "Theatetus" that truth can only be attained by infallibly knowing it.Jaakko Hintikka, argued that the plausibility of the KK thesis turns upon the acceptance of a strong notion of knowledge and that it is also in part constitutive of that notion.