Grandfather Paradox

In order to resolve the Grandfather paradox while not invoking the many worlds interpretation what if we imagine that all intercourse is in a superposition of possibilities, in time? The grandson, who travels back to kill his grandfather, would force nature to choose a different time for the intercourse to have happened. I mean Grandad can't remember where he put his freaking glasses let alone how good a position it was! #multiversity #intercourse #science