While reading the Checklist, what caught my attention is how medicine have evolved throughout the human history. Nowadays, Many serious injuries and diseases can be treaty as compared to older times. Also, the Checklist highlights the importance of doing things through a step to step fashion and why medical procedures are done in very specific way. As a matter of fact, in this article, it is evident that following through a specific list, it can lead to save life. On the other hand, if things are not followed correctly, it can lead to a tragedy.