Within the Animal Kingdom, we humans are unique in a number of ways. One of the more significant features of our species is that we produce art.
Art is creative expression that encompasses a wide variety of forms: music, painting, sculpture, writing, dance and design, to name just a few. Unlike science, which develops from facts, theories and experimentation, art evolves in the mind of its creator; though it might be influenced by the work of others, it is the unique product of that artist. And while its appeal may be widespread or limited, its value to our culture is less easily defined and may not be readily apparent.
Nevertheless, judgment is bestowed, either by a "professional critic" or by the consumer. Whatever the verdict, all art evokes emotion, from disgust to admiration and from apathy to inspiration; in that respect, it reflects human diversity. Fear of criticism may suppress creativity while freedom of expression fuels it.