Danièle Moyal-Sharrock

As is well known, Wittgenstein pointed out an asymmetry between first- and third-person psychological statements: the first, unlike the latter, involve observation or a claim to knowledge and are constitutionally open to uncertainty. In this paper, I challenge this asymmetry and Wittgenstein's own affirmation of the constitutional uncertainty of third-person psychological statements, and argue that Wittgenstein ultimately did too. I first show that, on his view, most of our third-person psychological statements are noncognitive; they stem from a subjective certainty: a certainty which, though not the result of an epistemic process, is not invulnerable to error in that it is a kind of assumption. I then trace Wittgenstein's realization that some third-person psychological certainties are not merely subjective but 'objective' (which means, as he uses the word, that they are logically indubitable): in some cases, we can be as logically certain that someone else is in pain than we are about ourselves being in pain. This positively reinforces Wittgenstein's rebuttal of other mind scepticism. I conclude with a response to objections about the legitimacy of calling an assurance that is logical (i.e., that does not have uncertainty or doubt on its flipside) a 'certainty', by suggesting that the flipside is to be found in pathological cases, and most pertinently here, in cases of dyssemia: a rare disorder affecting the ability to properly express or recognize basic physical expressions of feeling.

_ Source: _Volume 6, Issue 2-3, pp 97 - 119 In this paper, I briefly summarize the nature of Wittgenstein’s ‘hinge certainties,’ showing how they radically differ from traditional basic beliefs in their being nonepistemic, grammatical, nonpropositional, and enacted. I claim that it is these very features that enable hinge certainties to put a logical stop to justification, and thereby solve the regress problem of basic beliefs. This is a ground-breaking achievement—worthy of calling _On Certainty_ Wittgenstein’s ‘third masterpiece.’ As I go along, I question some differing interpretations and respond to some objections from fellow-readers of _On Certainty_: Duncan Pritchard, Michael Williams, and Crispin Wright.

So-called 'hinge propositions', Wittgenstein's version of our basic beliefs, are not propositions at all, but heuristic expressions of our bounds of sense which, as such, cannot meaningfully be said but only show themselves in what we say and do. Yet if our foundational certainty is necessarily an ineffable, enacted certainty, any challenge of it must also be enacted. Philosophical scepticism – being a mere mouthing of doubt – is impotent to unsettle a certainty whose salient conceptual feature is that it is lived. I appeal to psychopathology to show that the lived refutation of a basic certainty is not a manifestation of uncertainty, but of madness.