. . the tendancy of "artistes" to "forget" all the years of study (by book, by imitation and by trial and error) that lead to their skill which they now claim as a natural talent.

Of course, at the top end the natural talent certainly does come to play. Leonardo da Vinci (a certified genius) defined genius as "being able to do easily what others can not do at all". In contrast, Thomas Edison, a person of distinctly lesser genius but with a tremendous talent for marketing and exploiting the work of others, defined it as "one percent inspiration and ninety-nine percent perspiration".