 Grammar is hence situated within the regular activity with which language-games are interwoven: “… the word ‘language-game’ is used here to emphasize the fact that the speaking of language is part of an activity, or of a form of life” (PI 23). What enables language to function and therefore must be accepted as “given” are precisely forms of life. In Wittgenstein’s terms, “It is not only agreement in definitions but also (odd as it may sound) in judgments that is required” (PI 242), and this is “agreement not in opinions, but rather in form of life” (PI 241). Used by Wittgenstein sparingly—five times in the Investigations—this concept has given rise to interpretative quandaries and subsequent contradictory readings. Forms of life can be understood as constantly changing and contingent, dependent on culture, context, history, etc.; or as a background common to humankind, “shared human behavior” which is “the system of reference by means of which we interpret an unknown language” (PI 206); or as a notion which can be read differently in different cases – sometimes as relativistic, in other cases as expressing a more universalistic approach.