Trilemma, complexity, administration and exceptional events

The aim of the paper is to identify a key to understanding that allows us to overcome the regulatory trilemma that has emerged, seeking to offer a perspective according to which the exceptional event, an expression of the (ineliminable) complexity of reality, is included (in the competent political and institutional fora) in a broader case, encompassing contingencies. And this is not to foresee them, often asking science to do the impossible, nor to block activities considered dangerous through an exaggeration of the principles of prevention and precaution, but simply to allow the legal system to assume a broader vision, inclusive of the unusual case in point, to provide a toolbox of possible reactions to be triggered in the event (even remote) of the occurrence of an exceptional event.