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good reason to go mad. Or to make himself blind. As a matter of fact, it is exactly such a story of tragic 'blindness' that our world structures have schematically displayed: how was it possible to be so blind not to see to what extent the world of one's beliefs was so inaccessible to the world of facts, and vice versa?
The two worlds would have been mutually accessible if Oedipus had approached the truth. This means (to conclude) that, when the WNc of the beliefs (or wishes, or projects) of a character has the same world structure of the world of the final state of the fabula, these worlds are mutually accessible. When this does not happen, these worlds are mutually incompatible. The final state of the fabula disproves and rejects what is structurally incompatible with itself.
To summarize the conclusions of this paragraph: as far as the S-necessary relations are concerned, when the world WNcsm is isomorphic in its world structure with the WNsn of the state of the fabula checking it (where either n > m or n << m), then WNcsm is approved by the fabula and the two worlds are mutually accessible. When it is not, the WNcsm is disproved and the two worlds are mutually inaccessible.
8.8.3. Relations of Accessibility Among the Subworlds of the Model Reader and the States of the Fabula
The worlds of the reader's forecasts seem to obey the same laws as the epistemic and doxastic worlds of the characters:
(i) the reader's world can be compared to precise states of the fabula, except that in this case both the approval and the disapproval always come after the forecast (a character may also ignore what the fabula has already said, but the Model Reader ignores only what the fabula still has to say); 18
(ii) in the course of the plot, the reader may make many forecasts concerning minor sequences of events: when the possible world of his expectation is not validated by the further course of events, the modalities of accessibility between his doxastic world and the textual world are the same as those concerning characters' worlds (see 8.8.2);
(iii) when, on the contrary, the possible world of the reader concerns S-necessary properties, his world is accessible to the one of the fabula (and vice versa) only if the reader has imagined the same S-necessary properties. Otherwise he must get rid of his world so as to accept the state of affairs established by the fabula as actual in WN.
As far as the S-necessary relations are concerned, when a given world of the reader (let it be WRs1) is isomorphic in its world structure with the

 
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