  Dasein confronts every concrete situation in which it finds itself (into which it has been thrown) as a range of possibilities for acting (onto which it may project itself). Insofar as some of these possibilities are actualized, others will not be, meaning that there is a sense in which not-Being (a set of unactualized possibilities of Being) is a structural component of Dasein's Being. Out of this dynamic interplay, Dasein emerges as a delicate balance of determination (thrownness) and freedom (projection). The projective possibilities available to Dasein are delineated by totalities of involvements, structures that, as we have seen, embody the culturally conditioned ways in which Dasein may inhabit the world. Understanding is the process by which Dasein projects itself onto such possibilities. Crucially, understanding as projection is not conceived, by Heidegger, as involving, in any fundamental way, conscious or deliberate forward-planning. Projection “has nothing to do with comporting oneself towards a plan that has been thought out” (Being and Time 31: 185). The primary realization of understanding is as skilled activity in the domain of the ready-to-hand, but it can be manifested as interpretation, when Dasein explicitly takes something as something (e.g., in cases of disturbance), and also as linguistic assertion, when Dasein uses language to attribute a definite character to an entity as a mere present-at-hand object. (NB: assertion of the sort indicated here is of course just one linguistic practice among many; it does not in any way exhaust the phenomenon of language or its ontological contribution.) Another way of putting the point that culturally conditioned totalities of involvements define the space of Dasein's projection onto possibilities is to say that such totalities constitute the fore-structures of Dasein's practices of understanding and interpretation, practices that, as we have just seen, are projectively oriented manifestations of the taking-as activity that forms the existential core of Dasein's Being. What this tells us is that the hermeneutic circle is the “essential fore-structure of Dasein itself” (Being and Time 32: 195).