Transport theories, based on the quantum‐corrected Boltzmann equation, are widely used in the theory of heavy‐ion reactions. These theories are very successful in the analysis of the average dynamics of heavy‐ion reactions; they allow a microscopic treatment of the balance between mean‐field and two‐body collisions. Two limiting situations are studied: the scission of a nucleus and the characteristics of the nuclear sidewards flow. A study is then presented on the possibility to go beyond this average dynamics and to treat the dynamics of fluctuations.