I agree that the syllabus can be approached 'creatively' by the teacher.
However, at the moment, we are able to be led by the children into areas we, as teachers, had never imagined possible - because they want to learn about something. For instance, we may be learning about castles, which is taken off at a tangent by the children, who want to learn about weapons, or medieval folk stories - whatever. We don't write our medium term plans until the children have told us what they want to do.