Idle talk, which closes things off in the way we have designated, is the kind of Being which belongs to Dasein's understanding when that understanding has been uprooted. But idle talk does not occur as a condition which is present-at-hand in something present-at-hand: idle talk has been uprooted existentially, and this uprooting is constant. Ontologically this means that when Dasein maintains itself in idle talk, it is—as Being-in-the-world—cut off from its primary and primordially genuine relationships-of-Being towards the world, towards Dasein-with, and towards its very Being-in. Such a Dasein keeps floating unattached [in einer Schwebe]; yet in so doing, it is always alongside the world, with Others, and towards itself. To be uprooted in this manner is a possibility-of-Being only for an entity whose disclosedness is constituted by discourse as characterized by understanding and states-of-mind—that is to say, for an entity whose disclosedness, in such an ontologically constitutive state, is its "there", its 'in-the-world'. Far from amounting to a "not-Being" of Dasein, this uprooting is rather Dasein's most everyday and most stubborn 'Reality'.
Yet the obviousness and self-assurance of the average ways in which things have been interpreted, are such that while the particular Dasein drifts along towards an ever-increasing groundlessness as it floats, the uncanniness of this floating remains hidden from it under their protecting shelter.
¶ 36. Curiosity
In our analysis of understanding and of the disclosedness of the "there" in general, we have alluded to the lumen naturale, and designated the disclosedness of Being-in as Dasein's "clearing", in which it first becomes possible to have something like sight.1 Our conception of "sight" has been gained by looking at the basic kind of disclosure which is characteristic of Dasein—namely, understanding, in the sense of the genuine appropriation of those entities towards which Dasein can comport itself in accordance with its essential possibilities of Being.
The basic state of sight shows itself in a peculiar tendency-of-Being which belongs to everydayness—the tendency towards 'seeing'. We designate this tendency by the term "curiosity" [Neugier], which characteristically is not confined to seeing, but expresses the tendency towards a peculiar way of letting the world be encountered by us in perception. Our aim in Interpreting this phenomenon is in principle one which is existential-ontological. We do not restrict ourselves to an orientation towards cognition. Even at an early date (and in Greek philosophy this
1 Sec H. 133 above.