Abstract

In “On Certainty” Wittgenstein regards doubting as meaningful and reasonable only in a context providing language game where some background is taken for granted. Doubt, just as knowledge, should be backed up by an argument, only this time, one presenting reasons for uncertainty. Common sense propositions constitute part of the background for the arguments of doubting and because of their function and place within the system of language, they are regarded as indubitable. I discuss critically the idea of linguistically determined indubitability and advocate the possibility of a different kind of doubt, one that does not require its own justification and is still a reasonable epistemic attitude. Such doubt characterizes the states of affairs where the certainty of a proposition is not yet rationally established. I argue that, language does not limit us in doubting and in doubting reasonably.