My soup

I found this "graffiti" (I don't really dare calling it graffiti, as it's really more of a painting than a graffito to me), at the entrance of Jardin Villemin in the 10th arrondissement, by the Gare de l'est. I could not help but thinking of the cave men whose painting is now considered as work of art by our civilisation... Will this painting also be considered as a work of art in thousands of years (providing it survives that long!) or just as another tag on a wall? I tried to decipher the signature in the upper left corner - it reads Cho, or something like that - but I have been unable to track him/her down  on the Internet.