A band of daring testers sets up sometimes spectacular experiments to debunk received ideas, demystify or confirm popular beliefs. Concretely, how will they go about it? Installed in a hangar-laboratory, Agathe Lecaron, Vincent Chatelain, David Lowe, Élise Chassaing and James the mannequin use both laboratory resources (wind tunnel, crash test, etc.) and life-size tests that they will do it themselves. The experiments they conduct are linked and complement each other. The testers never leave a subject unresolved, each experiment provides a concrete scientific explanation, enriched with infographics or 3D images...