  As already indicated, Heidegger sometimes uses the expression ‘world’ in a different key sense, to designate what he calls the “ontologico-existential concept of worldhood” (Being and Time 14: 93). At this point in the existential analytic, worldhood is usefully identified as the abstract network mode of organizational configuration that is shared by all concrete totalities of involvements. We shall see, however, that as the hermeneutic spiral of the text unfolds, the notion of worldhood is subject to a series of reinterpretations until, finally, its deep structure gets played out in terms of temporality. 