So they did anthropological research into the unfolding of artistic activity in children, and they found that, across space and time, all children exhibit the same evolution in visual logic as they grow.
Altså de lavede antropologisk forskning i udviklingen af børns kunstneriske aktivitet, og de fandt ud af at på tværs af rum og tid, udviser alle børn den samme udvikling i visuel logik, imens de vokser.