Oh I believe that we exist, just that we may exist in a simulation. If we aren't in a simulation there is still the alternate universe theory, or time repeating itself?!? over and over through billions of years. Both could explain how the Stranger knows where we will be as well. I believe I read a card that talked about how the Exo's were used to test simulations because there mind was able to handle it and humans could not. Could the Stranger have been through these simulations so many times when she was created and found our alternate universe and saw that it was on the path for the best outcome for the survival of the human race, with some manipulation from her "experiences"? This game and lore leave a lot of questions unanswered and I can't wait to read every grimoire card and experience the story over the next 10 years.