Elles se rendent pas compte. (They don't realize.) by Armand Yerly

The materials are chosen by instinctive criterias, but if I had to explain them, I would say that on one hand I am (almost inevitably) in a recycling perspective, and on the other that I choose a material for his “reality level“, which has to be high enough. For instance, I consider wood to be more “real“ than paper or cardboard (not used) as it is less moldable, less easily accessible, thus more efficient. Paint for example is generally avoided, as its “thickness“, or “reality level“ is very small on this instinctive scale.'