However, in the study, researchers encountered numerous problems. For instance, they could not agree on a definition of creativity or how to measure it effectively. Some researchers are criticized for measuring quantity and not quality, but quality is subjective. Even with these problems, anthropological and psychological data show that the ability to increase creatively and intellectually is not limited by time and age. In fact, age is often an advantage to creative growth.
Most artists agree that there is really no truly new idea.
Creativity is inspired by past ideas and innovations. Even avant-garde works that are based on the rejection of traditional or past ideas are still influenced in that way. An excellent example of how experience heightens creativity is found in Other Cultures, Elder Years.