Human Resources - Considering Culture

Upon todays critical studies session.. i have read through the brief and racked my brain to get a starting point. In todays session we have been focusing on Art and culture.. and how the style and form of art determines itself in society. We have discussed numerous points on a variety of points within this subject. We have looked at how Marcel Duchamp takes the meaning of high culture art, and scrutinizes it. For Example he took a postcard of the Famous painting titled: " The Monalisa" (Below)



And as you analyze the image, you may notice that the face has been defaced? this is Marcel taking the most well established art in the world today, and basically taking the Michael out of the art culture. The piece that marcel has created from a postcard was accepted as high culture art. To me this raises the question; How can a literal piss take of a traditional piece of art be considered as art? when digital design as an art form, with work associated with that section of the creative world is just seen as mass produced, common and basically worthless in comparison to a defaced piss take of art itself?