Focusing on the study of the link theory, the author describes the differences that exist between the Logic of the One and the Logic of the Two (Puget). The source of anxiety for the baby is internal and the role of the Other, mother, is her capability to organize the baby's mind (Logic of the One). The source of anxiety in the relational world is “the radical difference that separates these subjects.” The tolerance and resolution of the “Uncertainty Principle” (Puget) will contribute to the expansion of the relational world of the individual and generate new social constructs (Logic if the Two). Here, creativity is born out of the metabolizing of the differences, as a necessary step to reach and create new tools to deal and modify the unpredictable realities.