Delusional Content and the Public Nature of Meaning: Reply to the Other Contributors

Abstract

The contribution by professors Bayne and Pacherie (2004) is an earnest attempt to defend a popular model of monothematic delusions against criticisms launched by John Campbell (2001). This model of monothematic delusions holds that such delusions are rational attempts by the sufferer to explain to herself specific kinds of anomalous sensory/affective experiences. Bayne, Pacherie, Campbell, and for that matter Sass, Harper, and Georgaca, write as if semantic meaning accrued to words in a language term by term, as if meaning is "private" to the deluded person, and that she might therefore mean almost anything by her own idiosyncratic use of the public language she otherwise speaks. This is a notorious mistake. As Hilary Putnam famously put it in his classic 1975 paper "The meaning of 'meaning,'" "Cut the pie any way you like, 'meanings' just ain't in the head" (1975, 227). That is, meanings are not ethereal interior mental objects, private to the speaker—they are not private inner episodes that take place in some mental center stage of consciousness. The deluded person does not and cannot succeed in changing the meaning of a term in a public language like English merely by an individual act of imaginative will involving the making of a bizarre assertion—not even if she repeats it a thousand times. The public nature of meaning, if I can coin a phrase for it, is the central theme in the work of the later Wittgenstein. Even before Putnam, Wittgenstein had made the same point in his Philosophical Investigations via a famous footnote in which he writes,