Ever heard that little saying about a butterfly and a tornado ... good, because I forgot it, but regardless, the point is, if you have a different type of sandwich, it might change your mood that day (ever so slightly) and you might make someone else happier by being cheerful, who might make a good meal for dinner making his wife happy, meaning they don't get divorced, they then decide to start a bakery which becomes insanely popular among politicians, then, because it is such a hotspot, it gets bombed to kill some politicians. So then, after all that, you ended up getting a bunch of people killed because you had a different sandwich (maybe not that exact series of events, but you get what I mean, a slight difference can have a domino effect and, given time, can change the entirety of the future).