Slide presented at "What People Leave Behind: Marks, Traces, Footprints and their Significance for Social Sciences", Online, June 15-16, 2021 While in sociology there is a little debate in the use of traces, in the Social Sciences and humanities there are several traditions in the interpretation of trace, and we focus our attention on the most interesting: the ethnomethodology, the school of suspicion, the interpretive anthropology, the evidential paradigm. What these traditions have in common is their interest in abductive reasoning or the way to use partial information to build probabilistic knowledge, a typical strategy of hunters, detectives, and physicians, archetypes of the social theory of traces. Then we propose a model for the interpretation of digital traces that is inspired by the cultural diamond of Wendy Griswold and for this reason we call it the digital traces’ diamond. Then we use a series of case study to describe how the proposed model works and how can be useful for the use of digital traces as a source of data.