  This article is devoted to the study of which appears as the most famous
paradoxes of quantum theory (Schrodinger cat, EPR argument and Aspect
experiments, delayed choice experiments and retrocausality problems). Through
these experiments, physics raises so fundamental questions that it borders, at
the limit, with metaphysics. The present article supports the idea that the
difficulties encountered, so puzzling they are, manifest only a transitional
state of the evolution of physics, that can be expected to be outdated one day.
In the meantime, caution is necessary to avoid the excesses that could lead to
metaphysical considerations a little too premature.
