The realist waters in which our preliminary interpretation has been swimming are muddied even further by another aspect of Dasein's essential historicality. Officially, it is seemingly not supposed to be a consequence of that historicality that we cannot discover universal features of ourselves. The evidence for this is that there are many conclusions reached in Being and Time that putatively apply to all Dasein, for example that Dasein's everyday experience is characterized by the structural domains of readiness-to-hand, un-readiness-to-hand and presence-at-hand (for additional evidence, see Polt 1999 92–4). Moreover, Heidegger isn't saying that any route to understanding is as good as any other. For example, he prioritizes authenticity as the road to an answer to the question of the meaning of Being. Thus: