To go somewhere is always easy. To come back also. But to stay, it’s always difficult. The first needs intelligence. The second, memory. But the third has to create a trace and this is the beginning of History. The two first are moves but the third is an action which changes the situation. After that nothing will be the same. A mission can be an exploration but also a settlement. Missions aren’t  only travels. We don’t need only to bring back souvenirs. We want and maybe we must create memories. It’s about memory of the future and only our intelligence can do this in a natural and an artificial way after some Time by the way. We already have a digital reality about Mars but we need more. We have to create a Martian reality on our own. To build History, we need to bring creations, testimonies etc. We must add values. Because the trace has to be an added value. The idea is not only to bring back things. It’s not the principle of a collection. In reality,  it’s a way to bring forward things, do facts, realizations. For that, art is precious. We have to create, to protect and to diffuse our work. A settlement isn’t passive. It has to be active. Artistic creations belong by default to this mission. That’s why the Martian settlement has to be conceived as an holistic process to be robust to the attacks of oblivion.