Signs of the form “p ⌵ ~p” are senseless, but not the proposition “(p).p ⌵ ~p”. If I know that this rose is either red or not red, I know nothing. The same holds of all ab-functions.

(2015–) Wittgenstein Source Bergen Nachlass Edition (WS-BNE). Edited by the Wittgenstein Archives at the University of Bergen under the direction of Alois Pichler. In: Wittgenstein Source, curated by Alois Pichler (2009–) and Joseph Wang-Kathrein (2020–). (N) Bergen: WAB.



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