At first, Freud - who had been informed about the work in progress, had read the proofs, and had given "valuable advice" - accepted in essence Ferenczi's and Rank's point of view. Still more than The Development of Psychoanalysis, Otto Rank's book on The Trauma of Birth, published in the same year, was to become a stumbling-block and was, furthermore, to symbolize the later alienation between Rank and the other members of the Committee. Ferenczi's position was becoming particularly difficult. On the one hand, he was fascinated by Rank's theory and found his modifications of psychoanalytic technique useful for his own practice; on the other, he was anxious not to disagree with Freud, and he found it unimaginable that he might be considered a heretic. Ferenczi did not follow Rank's theoretical and practical concepts. In Ferenczi's view, the truly traumatic event follows the adult's behaviour after an intense emotional experience between him/herself and the child.