Now what should we answer to the question, “What do light blue and dark blue have in common?”? At first sight the answer seems obvious: “They are both shades of blue.” But this is really a tautology. So let us ask, “What do these colours I am pointing to have in common?” (Suppose one is light blue, the other dark blue.) The answer to this really ought to be, “I don't know what game you are playing.” And it depends upon this game whether I should say they had anything in common, and what I should say they had in common.

(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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