||This study aims to recall the most recent international recommendations concerning the interventions on autism and to update the scientific literature on the assessment of methods. In a context of uncertainty and controversy we questioned the rhetoric of efficiency of the early intensive behavioral interventions, and the limits of the evidence-based medicine. The quality of the recent studies conducted to show the effectiveness of the behavioral methods on a few young children with autism has increased. However, evidence that short-term improvements are linked to improve over time is not substantial. In the light of data produced on the outcome of autistic adults showing that about two-thirds remain dependent, and take multiple medications, the improvement is not apparent, even in countries where the early intensive behavioral interventions have been used for many years. Therefore, the triumphant claims on a “miracle” method or drug treatment are to be put in perspective in view of the high level of complexity of all issues related to autism, the heterogeneity of autistic cases, and the short-term assessment of interventions used for very young children.