Blackwell Reference Online

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The thesis that knowing entails knowing that one knows, often symbolized in epistemic logic as ‘K p ? KK p ’, where ‘K’ stands for the concept of knowing. According to the KK-thesis, the logic of knowledge resembles the modal system S4. The KK-thesis was introduced into the contemporary epistemological discussion by Jaakko H intikka in Knowledge and Belief (1962), but a tacit or an explicit acceptancce of the thesis has been part of many philosophers’ views about knowledge since Plato and Aristotle. The validity of the thesis is sensitive to shifts in the sense of ‘know’; it has often been thought to characterize a strong concept of knowledge (e.g. knowledge based on conclusive grounds), or active as opposed to implicit knowledge. : Knowledge and Belief: An Introduction to the Logic of the Two Notions ( Ithaca , NY : Cornell University Press , 1962 ). Synthese 21 : 2 ( 1970 ). ... log in or subscribe to read full text