What is graphic design for?

 I have come across a clever way of merging illustration and photography by Ben Heine. These images aren't particularly trying to solve a problem as such, but are there for their aesthetic. I think they just pull you in because of there cleverness and creativeness. A lot of patience must have gone in to these to get them lined up properly. My personal favourite is the burning face.

http://thewondrous.com/amazingly-creative-drawing-vs-photography/