This article explains two enigmas related to the scientific career of Thomas C. Schelling, Nobel Price in Economics 2005: How to explain his capacity to always produce new ideas? Why have his multiple pioneer ideas had more impact on other social sciences and not on economics? The paper proposes three hypotheses: the minor impact of the acquired knowledge of his theoretical work, a heuristic that always privileged the relationship between unpublished facts and unusual angles, and the creation of a spontaneous knowledge network that covered different disciplines dedicated to social interaction.