I apologize that I can't respond in French.
It's interesting. The research is quite sound that deterrence works because people are scared of getting caught. If sentencing were the solution.... On the extreme side, in the state of Texas, where they have the death penalty, there's quite a swift, certain and significant outcome. We would see no homicide if it were, in fact, the issue of the outcome or the sentence. To that end, though, the fear of apprehension—of being caught—and then facing consequences is the point that research shows ensures people experience general deterrence. On specific deterrence, however, when we think of an individual, the sentence does play a role, as does their experience throughout the process.
If it's protracted—