In this essay, Didier Gazagnadou examines the question of the diffusion of tech- niques and the impact of this diffusion on cultures and individual subjectivity. Techniques of transport and communication occupy a decisive role in the techno-historical process that led to globalization. The author undertakes “a certain rehabilitation” of the diffusionist wave and examines the reasons why anthropology rejected this movement and neglected the diffusion question. He shows that in…