How would you start the search? And what if the idea was to explore disciplines such as astrophysics, ethnology, zoology, art or high-tech? This is how Anne Jaffrennou and Marie Cuisset begin every conversation they have. The Internet is their source of inspiration. When the "Search engine" on risks is run, we find the clown Philippe Goudard, the astrophysicist Patrick Michel, the ethnologists Sophie Blanchy and Tina Otten, the IT expert Bill Joy, the artist Gregory Green, the sociologists Laurent Boceno and Frédérick Lemarchand and Charles Frankel from the "Mars Society". We revisit the fragility of humankind in the face of greater forces and its power in the unpredictable world. What does humankind invent to ensure its survival when confronted with the unknown? And what does it really risk in the end? We also find ourselves asking the questions "What if risk were a distinctive feature of life?", "What if it were the fault of the Gods?", What if we had nothing more to do on earth?"…