I not only believe in parallel universes but I believe that we actually share memories with our parallel selves. Do a search on the internet someday and look for stories about people and places that have changed. I remember one such story where the person in question came home one day to find a tree missing from his yard that he swears was there when he went to work in the morning. No one else remembers the tree but he knows it was there. It could also explain why we have stories about dragons and monsters but yet we haven't found any solid evidence to support those stories. Maybe the stories are real but not from our version of reality. I wish I could travel between those parallel places. Just my .02 worth on the subject.