Being and Time hermeneutics), it must rely upon repetitive yet progressive acts of interpretation. "The methodological sense of phenomenological description is "interpretation"." Thus the question Heidegger asks in the introduction to "Being and Time" is: what is the being that will give access to the question of the meaning of Being? Heidegger's answer is that it can only be that being for whom the question of Being is important, the being for whom Being matters. As this answer already indicates, the being for whom Being is a question is not a "what", but a "who". Heidegger calls this being "Dasein" (an ordinary German
Being and Time of what a hammer "is" is not determined by a theoretical understanding of its presence, but by the fact that it is something we need at the moment we wish to do hammering. Only a "later" understanding might come to contemplate a hammer "as" an object. The total understanding of being results from an explication of the implicit knowledge of being that inheres in "Dasein". Philosophy thus becomes a form of interpretation, but since there is no external reference point outside being from which to begin this interpretation, the question becomes to know in which way to proceed with this