Sarah Labelle is working on public policy about open data, open government and conducts experimentation about data practices and culture. She sets up an approach of "embedded researcher" in several organisations like the think tank, la FING (Internet New Generation Foundation) and Etalab (the Open Data French Task Force). She is convinced of openness : our polical model gets out of breath because lack of trust and dialog. Openness is a part of the solution : open science, open society, open data... Data culture is another way of going on : everybody play and take action with data, the stake is to use data to confirm free will, to debate, to be responsive, to cross boundaries. Let's the summit enact people power!