Abstract
Within the framework of the assemblage theory formulated by Manuel De Landa, in this article, we develop the following points: the definition of the concept of assemblage, the explanation of its historical character and the problematization of this theory from its relation with epistemology, ethics, and ontology. In addition, we show briefly how this flat ontology is linked to political philosophy and, again, to epistemol-ogy. Problematizing the assemblage theory, whose philosophical source is in Deleuze and Guattari’s work, allows us to recognize the scope of an ontology that postulates the existence of a world composed of historical and heterogeneous multiplicities. To conclude, we clarify the concept of matter underlying this philosophy.