This article analyses the interaction between street children and youth and the people who try to help them. We seek to understand our outsiders' role in the children and youth's career on the streets and to provide ideas for programs and interventions. A group of volunteers in a Mexico City bus station gathered data in field diaries as observations and interviews with street children, youths and helpers, and analyzed them using the Grounded Theory method over a period of four years. This retrospective uses the core concept of Social Interface, which is a point of encounter between two social systems, to understand the relationship between the children and their many helpers.

The data revealed that the children use the programs and services in their own way and the helpers try to make them “use it right” by modifying the programs. Thus, each side protects its own view of the situation from the other and this struggle contributes to keep the children and youths on the streets. Attentive self-awareness is necessary on the part of those who own the programs and services, so that the children's view can be included in the planning, implementing and running of these programs.