If the hacking most celebrated is the one that is a technical and conceptual elegant solution to a problem, the whole practice of intelligent reuse of resources, in fact, is able to break the deadly cycle of consumption, implementing, therefore, a 'hack' to this same cycle, which allows at the same time to exploit resources more naturally and not to harm the ecosystem with the placing of waste continues more or less poisonous. Even parasites are part of this process, in that they can feed their vital economy at the expense of another organism, but without this leading to a direct pollution of the same. Parasite Michael Rakowitz is a project that assembles inflatable shelters for homeless people and homeless, fed from the exhaust air from the engines of external ventilation systems (which draw through a 'mouth' adaptable), sometimes exploited by the homeless to warm up. Closed, these imaginative housing units from the street, can be put in an envelope or in a backpack, while inflating provide shelter and a soft surface on which to lie down. This work brilliantly marries the rules of parasitism to a political practice, linking the two themes in an inextricable union that uncovers the paradox of waste and indifference. The artist's work does not want to openly be a solution, but a symbolic challenge that makes architecturally visible homelessness, especially in its abnormal extent to which arrived in the United States opulent, and makes it a 'statement' for the inevitable political look. The excellent communication strategy that the project adopts prods anyone confrontarcisi, and dramatically prevents the marginalization silent, amplifying visually, as the author himself says "the problematic relationship between those who own a home and who does not."