  If the picture just sketched is a productive way to understand Heidegger, then, perhaps surprisingly, his position might best be thought of as a mild kind of scientific realism. For, on this interpretation, one of Dasein's cultural practices, the practice of science, has the special quality of revealing natural entities as they are in themselves, that is, independently of Dasein's culturally conditioned uses and articulations of them. Crucially, however, this sort of scientific realism maintains ample conceptual room for Sheehan's well-observed point that, for Heidegger, at every stage of his thinking, “there is no ‘is’ to things without a taking-as… no sense that is independent of human being… Before homo sapiens evolved, there was no ‘being’ on earth… because ‘being’ for Heidegger does not mean ‘in existence’ ” (Sheehan 2001). Indeed, Being concerns sense-making (intelligibility), and the different ways in which entities make sense to us, including as present-at-hand, are dependent on the fact that we are Dasein, creatures with a particular mode of Being. So while natural entities do not require the existence of Dasein in order just to occur (in an ordinary, straightforward sense of ‘occur’), they do require Dasein in order to be intelligible at all, including as entities that just occur. Understood properly, then, the following two claims that Heidegger makes are entirely consistent with each other. First: “Being (not entities) is dependent upon the understanding of Being; that is to say, Reality (not the Real) is dependent upon care”. Secondly: “[O]nly as long as Dasein is (that is, only as long as an understanding of Being is ontically possible), ‘is there’ Being. When Dasein does not exist, ‘independence’ ‘is’ not either, nor ‘is’ the ‘in-itself’ ”. (Both quotations from Being and Time, 43: 255.)