A Sound of Thunder its a very good story because it talks about how interesting our lifes could be in the future if we could travel in a time machine we would now how the history but also we could make somany mistakes as the one in the stoy because we could chache all the world's history by just making an insignificant action we can change everything; maybe it's not such a good idea traveling thought time because we are not ready to leave everything as it is maybe we are not gonna be realdy never because we'll aways would want to change everthing.