It is more broadly used in contemporary philosophy to denote the study of theories and methods of the interpretation of all texts and systems of meaning. The concept of “text” is here extended beyond written documents to any number of objects subject to interpretation, such as experiences. A hermeneutic is also defined as a specific system or method for interpretation, or a specific theory of interpretation. However, the contemporary philosopher Hans-Georg Gadamer has said that hermeneutics is an approach rather than a method and, further, that the hermeneutic circle is the central problem of interpretation.