The theory is based on four basic assumptions: The processing fluency theory of aesthetic pleasure emphasizes the interaction between the viewer and an object in that it integrates theories and a wide range of empirical evidence that focus on effects of objective stimulus attributes on perceived beauty[5] with those that emphasize the role of experience, for example by invoking prototypicality.
The theory resolves the apparent paradox of inborn and acquired preferences.
According to the fluency account, this is because infants share perceptual equipment that make them process consonance in music more easily than dissonance.
This familiarization explains why individuals from different cultures have different musical tastes.
In addition, the theory helps explain why beauty (in a wide sense; perhaps the term elegance is more apt) is a cue for truth in mathematical problem solving and scientific discovery.