Here, we have the two notions that iron">

Economics Dictionary of Arguments

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Counterfactuals: Counterfactuals are hypothetical statements about what would have happened if something had been different. See also Counterfactual conditionals.
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Annotation: The above characterizations of concepts are neither definitions nor exhausting presentations of problems related to them. Instead, they are intended to give a short introduction to the contributions below. – Lexicon of Arguments.

 
Author Concept Summary/Quotes Sources

Gottlob Frege on Counterfactuals - Dictionary of Arguments

II 64 f
Counterfactual/Frege: "If iron was lighter than water, it would float on water."

Here, we have the two notions that iron is not lighter, and that something that is lighter floats on water. The subordinate clause again expresses the one notion and a part of the other notion.
>Thought
, >Clause,
E.g. "After Schleswig-Holstein was cut off from Denmark, Prussia and Austria quarreled."
Here, the subordinate clause expresses not only one notion, but also part of the other. Therefore, it cannot be replaced generally by another of the same truth value.
>Truth value.
II 64
Cases in which this simply does not work:
1) That the subordinate clause means no truth value because it only expresses part of a thought.
2) That it does mean a truth value, but does not limit itself to it, because its sense still comprises a portion of the other thought and not only one thought.
The first case occurs:
a) In the case of the odd meaning of the words.
b) If a part of the sentence only vaguely suggests, instead of being a proper name.
>Fregean sense, >Fregean meaning,
>Proper names, >Oblique sense, >Oblique meaning.

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Explanation of symbols: Roman numerals indicate the source, arabic numerals indicate the page number. The corresponding books are indicated on the right hand side. ((s)…): Comment by the sender of the contribution. Translations: Dictionary of Arguments
The note [Concept/Author], [Author1]Vs[Author2] or [Author]Vs[term] resp. "problem:"/"solution:", "old:"/"new:" and "thesis:" is an addition from the Dictionary of Arguments. If a German edition is specified, the page numbers refer to this edition.

F I
G. Frege
Die Grundlagen der Arithmetik Stuttgart 1987

F II
G. Frege
Funktion, Begriff, Bedeutung Göttingen 1994

F IV
G. Frege
Logische Untersuchungen Göttingen 1993


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