A text Hello, could you please correct for me this text ? Thanks in advance I would like to comment on the article entitled " Reply to Sir Ferry ". It's talked about how he criticizes sciences and scientific research in general. I think that we have to criticize constructively to encourage a researcher to develop his ideas and strategies in medical research instead of blaming him and attacking him personaly while he's on the way. So we have to note the difference between constructive criticism and destructive criticism. The first one improve a person's behavior and encouraging positive things. But destructive criticism demeans, discredits and hurt people. I think we have to respect the knowledges and the capacities of each researcher. Because this last have learned a lot of things that allowed him to develop and product something that can help the humanity. For example, Didier Raoult has helped many sick people to get rid of the covid19 when he suggests the medecine "chloroquine". Statistically speaking, we realize that in some departments in France where they use this medecine, the rate of the mortality is low. It's true that this medecine is not very efficient like a vaccination but if we see the cure rate in Morocco where we apply this medecine, there is hope. To sum up, I think we don't have to criticize badly if we don't have enough informations about the topic. And in the other hand, it's important to choose a peaceful time and place to deliver the critice. For me, it's a bad idea to attack someone personaly with his team in such a special situation.