This lecture explores the extension of 'The Topofil of Boa Vista' by B. Latour in Sciences and Technologies Studies, focusing on the transition from case studies to commensurable data. It discusses the observation of soil and plants as indicators, the reconstitution of the forest in a cupboard, and the diagram of the soil. The lecture also delves into the production of scientific facts, the role of social sciences in computability, and the importance of comparisons and indicators in digital humanities.