Use of logical propositions¤ You may have one so complicated that you cannot, by looking at it, see that it is a tautology; but you have shewn that it can be derived by certain operations from || certain other propositions which according to our rule for constructing tautologies; & hence you are enabled to see that one thing follows from another, when you would not have been able to see it otherwise. E.g. if our tautology is of the form p ⊃ q, you can see that q follows from p; & so on.


(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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