[23] This remark seems pivotal--it summarizes the territory that we have traveled so far. By use of examples it suggests the poverty of the Positivist view of language. Rhetorically, it functions at this point in the text as a clearing of the field. Now that we've gotten that out of the way . . . Wittgenstein seems to be saying.

[24] We only know what we mean in a given utterance because that utterance is part of a language game, which is a social practice. Games, practices--as you pointed out earlier--come & go. This is true for individual lives as well as communities of language users: I don't play the same language games I did ten years ago.