Drake equation and Arecibo message

Whereas I cannot say anything on the Drake equation because I am quite unable to understand it, I would have much to discuss on the Arecibo message. I think not to be represented at all because our human reality is described too superficially and only for how it is structured; where are for example irrationality? death? fear? pleasure? In their place I would have sent the image of a work of art... but don't ask me which one!