Author 'Boucher Marc dit de Meilh' (Id 157305 ) : Balance between the drop and the darts of the three stems. Three is the number of balance in the laws of nature, and in this case, with the rods, gives meaning to the one drop. A drop odd figure also balance that I can not do without in the example of the image. Symmetry and asymmetry, changes in form and color, focus, etc.. Will complete what I wanted to express. Marc Boucher said Meilhan.