This article will take you through the evolution of our approach in presenting and communicating science. For twenty years ‘1, 2, 3, sciences’ has run participatory live workshops for adults. A special tool, the Group Provisory Conclusion or GPC, involving each participant, contributes to the success. Our expectation was to rekindle the public’s interest through participatory methods, supported by the emergence of collective intelligence. It describes our actions to help people reduce their apprehension towards science.