green and yellow leaf with black background

Rose leaf in backlighting on a black background. The veins are the channels of the plant that feed the leaf blade.It is a bit like the map of an ideal city photographed at night. There's a reason the ribs are shaped like this. Why, a little like the hyperstatically assembled elements of the Eiffel Tower, which we compare to the flakes of a bone, not to think that this organisation is one of the best in terms of logistical efficiency?