“A Sound of Thunder” by Ray Bradbury is a story about how small things can change the future drastically. The protagonist, Eckels is traveling back in time to be able to shoot some dinosaurs. He is warned several times that touching anything he is not supposed to can cause great dangers. Unfortunately, he goes off track and steps on a butterfly. Although this does not seem important, when Eckels returns back to the present, he realizes that a whole nother president has won the election, and the alphabet is all different. The tour guide he went with realizes, too, and shoots Eckels.
This story teaches us that something may seem insignificant, but it can change the future by a lot. Although I do not believe that time traveling will ever be created, if it were to be, people would need to be careful when going to the past. Another lesson that is taught is when doing something important, make sure to pay close attention to what you are doing and listen to directions. If Eckels had just stayed on the trail instead of being too curious and walking off, the world would not have been changed so much.