The other aspect is that you become much more aware of the structural problems that pertain to that continent. You feel the need to act to try and solve them.
The necessity to conceptualise has to come very early on, and defining a vector of development for that film also at the beginning of the process will allow you much more freedom as you go along.
The films that I`ve done before were original stories most of the time, I did two adaptations before this, but they were mostly original stories where I had complete freedom to evolve in the direction I wanted.
That`s why I have always admired documentaries, because they open windows that can make you understand much better where you come from, much better than fiction, I think.