The realization on the part of the workers of the necessity of revolution is a condition pre-requisite to revolutionary war. Indeed. it constitutes a well-defined step in the unfolding of the total revolutionary process; it does not. however. constitute the process itself. In effect. following the general principle of passage from quantity to quality. the step of realization succeeds to a stage qualified by its content, that is to say characterized by conditions which one may call permissive i.e. conditions which permit or precipitate events. This means secondary and articulated contradictions based on the principal, the uninterrupted development of which permits the revolutionary process to take wing. The following article lays bare the permissive conditions of a revolutionary process as seen in a concrete example, namely that of Cambodia. These conditions are tied to the opposition between demographic growth and stagnation of agriculture.