At present, in the field of visual effects, great emphasis is placed on art directable outputs. Mathematical computational models simulate the photoreal visual, but the usual dynamic system shows chaotic behavior. Thus, a small change in the initial conditions leads to a very different result over time. This behavior is difficult for artists to influence. For example, the real running water will not form a shape of the heart in the air. The shards of a shattered plate on the ground never form a silhouette of a woman. Combining physically plausible elements in the computer simulations reinforce believability. Audiences perceive media content as realistic, if they judge it to be like real life, but audiences also vary in their judgements of the same material. It is therefore important to classify the attributes of real worlds dynamic system behavior and their impact to subjective perception of realism.