His view inverts the traditional priority of theory over practice. For him the theoretical view is artificial and comes from just looking at something without any involvement, such an experience is 'levelled off'. For Heidegger this attitude is given the moniker, ""present-at-hand"" and it is parasitic upon our more fundamental mode of interaction, called ""ready-to-hand"". Parasitic in the sense that in our history we must first have an attitude or mood toward the world before we can adopt a scientific or neutral attitude toward it. Such a re-evaluation of science allows him to say, for example, that the friend caught sight of across the road is in fact closer than the street upon which one walks, that the voice on a phone is closer than the handpiece, that the glasses pushed back on your head, can be, when not found, considered as remote and far away.