The concept of disability carries, at least implicitly, the concept of a fundamental incapacity to be in the world. But have the foundations of this notion only been well laid?After a brief review of the studies that have already been done, we will insist on the primacy of the lived experience of the disabled person, who reconstructs her relationship with the world around her in a different way. The disorder resulting from this reconstruction is only apparent and emanates from an outside perspective. This idea of deviation from an expected norm is illustrated by several testimonies of life, where we see how much the individual is sometimes able to deploy great inventiveness, then persevere in her effort to adopt a new behavior via the imp...