““In order to minimize presuppositions, Heidegger starts by examining Dasein in its “average everydayness,” that is, what we are like most of the time. Picking an exceptional state such as theoretical knowing as our topic of study requires a justification of that choice, which then pushes the inquiry back to the examination of those supporting arguments, and so on. In order to avoid as much of that as possible (similar to the way Hegel begins), Heidegger just looks at our normal mundane living, where he finds that the kind of dealing which is closest to us is as we have shown, not a bare perceptual cognition, but rather that kind of concern which manipulates things and puts them to use. . . . Such entities are not thereby objects for knowing the “world” theoretically; they are simply what gets used, what gets produced, and so forth. (Heidegger, BT 95/67; see also Heidegger, HCT 30)””
