If quantum mechanics is correct than everything in the universe would have a subtle affect on our life due to its gravitational force. This force alter on what plankian size of time-space we are existing in. By moving this place the quarks are in the brain cells you completely change there likelihood of making random quantum fluctuations(like my brain cell deciding to randomly jump to pluto and chill).
    Any minute change in position of my developing brain cells would have another chance to have a different space in time-sapce at one time. Thus if there was one more star in the universe just by adding one star I would have developed into a different person with the quantum possibility.