I think it is difficult to pick only one of those 33 secrets. There are a few good points in this doc**ent and I would like to combine “think like a child – children have no limit to their thinking” and “Understand by observing the environment, infrastructure, culture and lives of people by being there.”
If adults are thinking about a problem, they know the limits they have, whereas children have no boundaries. Grown-Ups will probably not do or think about something which they consider as being impossible. Children do not know what they are able to do and what they cannot do. Everything is new for them and they are keen to learn. They always ask questions and want to know, why this is like that and that is like this… and they always have new ideas. So in my opinion children are very good innovators.
But to be a social innovator it is important to think about other people. Children have many good ideas, but they often think about themselves and not about others. So in my opinion it is also important to understand by observing the environment, infrastructure and lives of people by being there. It is essential to know the problem exactly before you create something for them. If you do not know the real problem you can be the best innovator, but it will not help them.
To conclude I would say that you need the creativity and perhaps the naivety of a child combined with the understanding of the needs of other people to be an excellent social innovator. So you do have the craziest ideas of a child and a real social problem can be solved, too.