Hermeneutics
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 interpretation. This is the problem of the "hermeneutic circle," and the necessity for the interpretation of the meaning of being to proceed in stages: this is why Heidegger's technique in Being and Time is sometimes referred to as hermeneutical phenomenology.
This interpretative aspect of Heidegger's project had a profound influence on the hermeneutic approach of his student Hans-Georg Gadamer.
Read more about this topic: Being And Time