  The German term Bewandtnis is extremely difficult to translate in a way that captures all its native nuances (for discussion, see Tugendhat 1967; thanks to a reviewer for emphasizing this point). And things are made more complicated by the fact that, during his exposition, Heidegger freely employs a number of closely related notions, including ‘assignment’, ‘indication’ and ‘reference’. Nevertheless, what is clear is that Heidegger introduces the term that Macquarrie and Robinson translate as ‘involvement’ to express the roles that equipmental entities play—the ways in which they are involved—in Dasein's everyday patterns of activity. Crucially, for Heidegger, an involvement is not a stand-alone structure, but rather a link in a network of intelligibility that he calls a totality of involvements. Take the stock Heideggerian example: the hammer is involved in an act of hammering; that hammering is involved in making something fast; and that making something fast is involved in protecting the human agent against bad weather. Such totalities of involvements are the contexts of everyday equipmental practice. As such, they define equipmental entities, so the hammer is intelligible as what it is only with respect to the shelter and, indeed, all the other items of equipment to which it meaningfully relates in Dasein's everyday practices. This relational ontology generates what Brandom (1983, 391–3) calls Heidegger's ‘strong systematicity condition’, as given voice in Heidegger's striking claim that “[t]aken strictly, there ‘is’ no such thing as an equipment” (Being and Time, 15: 97). And this radical holism spreads, because once one begins to trace a path through a network of involvements, one will inevitably traverse vast regions of involvement-space. Thus links will be traced not only from hammers to hammering to making fast to protection against the weather, but also from hammers to pulling out nails to dismantling wardrobes to moving house. This behaviour will refer back to many other behaviours (packing, van-driving) and thus to many other items of equipment (large boxes, removal vans), and so on. The result is a large-scale holistic network of interconnected relational significance. Such networks constitute worlds, in one of Heidegger's key senses of the term—an ontical sense that he describes as having a pre-ontological signification (Being and Time 14: 93).