Symmetry is a beautiful thing. It seems to be nature’s preferred state, at least in the structure of organisms: two eyes for stereoscopic vision (the better to hunt you with), two legs of equal length for injury-free traversal of the environment, two hands, two arms. For all intents and purposes, the two sides of the body are approximate mirror images of each other, with corresponding muscles and ligaments and tendons. Our anatomical symmetry is obviously a product of evolution, becausea balanced body simply works better. Kids born with right legs an inch or two shorter than the left are more prone to injury, just as cars with bigger wheels on the left will be more prone to disrepair. Objective human beauty is determined by symmetry of the facial structure, as if we’re innately drawn to balance. A balanced body structure, too, is objectively attractive, because it connotes strength and competence in matters of survival (war, hunting, protection). It becomes clear that if symmetry weren’t important for survival in this environment, it wouldn’t have been selected for, we wouldn’t be drawn to it, and plants and animals would have assumed entirely different forms. Maybe we’d be amorphous blobs just kind of oozing around (as opposed to the amorphous blobs with legs and arms that presently populate our planet).