This occurs even when an individual does not invent an experience or deliberately change it. There is disagreement as to the characteristics of the given. These are not sufficient conditions for givenness, but they are necessary. The problem with the given is understanding the dividing line between inference and actual experience. Therefore, to the direct realist, there is no problem of knowledge.
Empiricists typically resist describing experience as purely mental.
However, secondary qualities such as color, taste, and sound involve some individual mental interpretation. Rationalists claim that developed experience comes from the mind a priori instead of through interpretation of the given. It is only through logic that the mind can understand the experience.