Hannah Alonim and Allan Schore comment on my article “The Protest of a Six Month Old Girl: Is This a Prodrome of Autism?,” an account of the infant-parent psychotherapy of a baby with attachment problems and possibly autistic defenses. In response, I address the points of convergence and divergence between the commentators and myself: the distinction between attachment disorders and autism, the contribution of the concept of “containment,” and the timeline for the differentiation of self from other. I also reflect on Schore’s and Alonim’s contributions to the cultural landscape of autism research and treatment.