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Full Idea
Frege's Constraint says if a subject believes an object is both F and not-F (as in 'Frege cases'), then the subject thinks of that object under distinct modes of presentation. Having distinct mental files of the object is sufficient to generate this.
Gist of Idea
The Frege case of believing a thing is both F and not-F is explained by separate mental files
Source
François Recanati (Mental Files in Flux [2016], Pref)
Book Ref
Recanati,François: 'Mental Files in Flux' [OUP 2016], p.-10
A Reaction
[compressed] When you look at how many semantic puzzles (notably from Frege and Kripke) are solved by the existence of labelled mental files, the case for them is overwhelming.
| 22242 | Mental files are concepts, which are either collections or (better) containers [Recanati] |
| 22243 | The Frege case of believing a thing is both F and not-F is explained by separate mental files [Recanati] |
| 22245 | A linguistic expression refers to what its associated mental file refers to [Recanati] |
| 22246 | A train of reasoning must be treated as all happening simultaneously [Recanati] |
| 22247 | Indexicality is not just a feature of language; examples show it also occurs in thought [Recanati] |
| 22248 | How can we communicate indexical thoughts to people not in the right context? [Recanati] |
| 22249 | The Naive view of communication is that hearers acquire exactly the thoughts of the speaker [Recanati] |
| 22250 | There are speakers' thoughts and hearers' thoughts, but no further thought attached to the utterance [Recanati] |