Corrected entry: In the scene where Nulla is hiding in the water tank with the police down below looking for him, the windmill is turning quite fast, however cut away shots of the trees, vegetation and the long hair of one of the trackers shows no sign of any wind whatsoever.
Phixius
31st Dec 2008
Correction: Windmills are tall because wind speed increases the further from the ground it's blowing.
Phixius ★