I think cubism has not fully been developed. It is treated like a style, pigeonholed and that's it.
David Hockney...all along I've had an ambivalent relationship to photography - but as to whether I thought it an art form, or a craft, or a technique, well, I've always been taken with Henry Geldzahler's answer to that question when he said, I thought it was a hobby.
David Hockney