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short sequence of sentences). Frequently, these attitudes produce possible worlds which are inaccessible to the world such as is outlined by the plot. However, these rules of accessibility being the same as those assumed in 8.6.4, when the W1 of a given, character's beliefs scores more properties than are considered by the W0 of discoursive events, the character can readjust his own wrong belief by doing as suggested by Figures 8.12 and 8.13 in 8.6.4. The character readjusts his own beliefs and accepts the world as it is outlined by the plot. He, so to speak, throws away his wrong belief as soon as he recognizes that the (fictional) reality is different.
The question becomes even simpler when there is no difference in properties between the real (fictional) world and the world of one character's beliefs.
In chapter 2 Marguerite outlines a W1 of her beliefs when thinking that Raoul (who has the property of being essentially related to her by marriage also has the property of coveting Mlle. Moreno. Then she discovers (let us suppose) that it was untrue. The transformation between the two worlds (where C = to covet Moreno) takes place as shown in Figure 8.16. Raoul in Marguerite's world is a variant of Raoul in the world of the plot. In the plot, therefore, relations between worlds follow the same rules as in the world of our common experience (see 8.3.6).
W1
rMm
C
W2
rMm
C
r
(+)
+
r
(+)
-

Figure 8.16
But there are cases in which the propositional attitudes of the characters make up part of the fabula itself. When Oedipus believes that he has nothing to do with the death of Laius, we are facing a belief that has two characteristics: (i) it is indispensable to the development of the fabula; (ii) it concerns an S-necessary relation (Oedipus is fictionally nothing else but that individual who has killed his father and married his mother without knowing it). Obviously, to be indispensable to the course of the fabula and to be S-necessary are two facets of the same fictional phenomenon.
At a certain point of the story, Oedipus believes that there are at large four individuals: Oedipus (e), who has killed an unknown wayfarer (u) a long time ago; and Laius (l), who has been murdered by an unknown murderer (m).
In the world WNc of his belief, Oedipus thinks that some properties hold, all S-necessary to identify the characters in play, namely,

 
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