**9. Concluding remarks**

In Medicine**,** bioethics is a field of study concerned with the ethics and philosophical implications of certain medical procedures, technologies, and treatments; in this case, the end-of-life ethical dilemmas, are directly or indirectly related to those presumptions.

The main interrogation is to know why these procedures raise so many doubts and uncertainties?

As previously outlined, in the words of French sociologist Edgar Morin, the great bestowal of knowledge left by the twentieth century was the awareness of the limits of knowledge. And he endowed that the major conviction is that uncertainties are unable to be dismissed not only in action but in knowledge.

For this scholar, the knowledge is imbued by three principles of uncertainties: The brain, the psychic, and the epistemological uncertainties.

In the pursuit of medicine, despite of countless progress in the fields of physiopathology and technical advances that evaluates and modifies the natural history of numerous clinical ailments, the skepticism and the unpredictability can overshadow the result.

In short, the science and its execution entail the uncertainty and sometimes the conflict. This unpredictability leads, from time to time, to question the procedures, the consequences, and the results.

Hence the dilemmas.
