The author develops a phenomenological theory of the social structure of immediate experience. At the heart of this study is a theory of habitual sensitivity that originates in the writings of Maurice Merleau-Ponty and John Dewey. The author develops this theory as an alternative to Schutz's theory of taken-for-granted knowledge, which has had a pervasive influence on how phenomenology has been understood and applied within sociology. Each chapter expands on Ostrow's claim that the world is inherently social, by virtue of the sensitivity that immerses us within it before it ever becomes an object of reflection.