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|Signs||Stegmüller IV 79
Excessive fact/Wittgenstein: (Philosophical Investigations/PI Â§ 192): Kripke: straightforward solution: finding an excessive fact: this should clearly define as a finite fact the potentially infinite future uses of a sign. - That is impossible.
Sign/Symbol/Wittgenstein: a sign can be nonsensical. - A symbol cannot be nonsensical. - Also tone and expression are part of the symbol. - Incomplete symbol: E.g. "I'm hungry" written on the blackboard.
Sign/Wittgenstein/Schulte: signs are not interpreted, but known. This is a practical ability. -> Training.
Definition Symptom/Wittgenstein: a phenomenon that occurs according to experience with the phenomenon together, which is our defining criterion. - E.g. Symptoms: sore throat. - Criteria: Angina bacillus. - The fluctuation of grammar between the two makes it seem as if there were only symptoms. - Meaning: is not only secured by shared occurrence (like a symptom). - Instead: we need the method of verification.
Vorlesungen 1930-35 Frankfurt 1989
Das Blaue Buch - Eine Philosophische Betrachtung Frankfurt 1984
Tractatus Logico Philosophicus Frankfurt/M 1960