  As this passage makes clear, the Being-in dimension of Being-in-the-world cannot be thought of as a merely spatial relation in some sense that might be determined by a GPS device, since Dasein is never just present-at-hand within the world in the way demanded by that sort of spatial in-ness. Heidegger sometimes uses the term dwelling to capture the distinctive manner in which Dasein is in the world. To dwell in a house is not merely to be inside it spatially in the sense just canvassed. Rather, it is to belong there, to have a familiar place there. It is in this sense that Dasein is (essentially) in the world. (Heidegger will later introduce an existential notion of spatiality that does help to illuminate the sense in which Dasein is in the world. More on that below.) So now, what is the world such that Dasein (essentially) dwells in it? To answer this question we need to spend some time unpacking the Heideggerian concept of an ‘involvement’ (Bewandtnis).