I remember a similar rule from a long-gone show about time travel: Do not touch your (future) self, because the same matter cannot occupy the same space at the same time. But is it really the same matter, since skin periodically replaces itself?
April 15, 2016
I remember a similar rule from a long-gone show about time travel: Do not touch your (future) self, because the same matter cannot occupy the same space at the same time. But is it really the same matter, since skin periodically replaces itself?