Using these shapes, the team arranged the two "shoals" so that they had the same overall surface area and luminance even though they contained a different number of objects.

同类鱼群”被分成两组，两组”鱼群”是由整体表面积和亮度都一致的几何形状组成的，只是每组里”鱼群”内个体数量不一样。