. Science and mathematics have advanced, and it seems the paradox has been solved — by not actually being a paradox at all.)
The grandfather paradox — in which a homicidal grandson travels back in time and murders his grandfather, thus preventing his own birth — has plagued humanity since at least 1931 (and probably earlier). Science and mathematics have advanced, and it seems the paradox has been solved — by not actually being a paradox at all.
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