International audienceThe question of origins has always been raised by humanity. For a long time, this nebulous past was the subject of haphazard constructions closer to myths and legends than to any kind of human history. It was only in the 19th century that the word "prehistory" entered into everyday language. However, the horizons it evokes are not the same for adults or children, specialists or neophytes. Different desires resonate in it. They contribute to the richness and complexity of the idea of prehistory today.The prehistory of prehistorians is very concrete, forged from material clues that they gather in the manner of detectives. Despite the absence of written documents, this very long period of time is better understood thanks ...