My reply is - Art is psychological. It can be reduced to a perception of a subject of a constructed visual stimulus, predictable in regards to probable response of its intended target spectators.
Art is an experience based upon interrelationship between people and their world.
Art includes such relationships as between viewer and art object, artist and viewer, society and artist, and the unconscious and the conscious. Thus, as Gestalt psychologists envision a sense of wholeness that the human mind provides to the static and isolated nature of real world stimuli, artists engineer things which capture this sense of unity among the apparently disparate things or events of our environment. Like the scientists, the artists search to discover a new reality through accomplished means of extending the limitation of today's reality. Science does this through advancing technology whereas artists use these new techniques to expand creative awareness of their contemporaries. Art only exists in the minds of its selected perceivers.