A Bean, split in half. Symmetry is the possibility of making a change to a particular system, as a result of which nothing has changed in that system. We can observe symmetry in everything in nature, from the human body that can be reversed without changing the human form, to the laws of nature that do not change no matter how the circumstances change. Nevertheless, man's feelings about symmetry are confused, sometimes he associates it with beauty, sometimes he associates it with death.