Science and science fiction writers were not the first to tackle time travel. Before advanced mathematics and Hollywood blockbusters, philosophers tried to understand the nature of time with reason and logic. Imagining visiting the day before or even another century was easy, but what were the consequences?
Can the future affect the past and then change the future?
At first, it seems like a harmless idea. Go back in time. Give yourself the winning lottery numbers. Come back to present time. Win Millions. But what if you went back and prevented your grandfather from meeting your grandmother? Effectively, your parents never meet, and you are never conceived, but then you never traveled back in time. Then your grandfather did meet your grandmother and you were conceived. This is known as the Grandfather’s Paradox and you don’t have to be a quantum physicist to see the conflict in the idea of preventing your very own birth. If you were never born you wouldn’t have time traveled in the first place. Due to this paradox, there was doubt even among physicists like Stephen Hawking that time travel was even possible. Despite the math of quantum mechanics, the Grandfather’s Paradox limited time travel to science fiction. It just was not logically possible—that is, until 2009.
In the 13th chapter of Ron Morehead’s The Quantum Bigfoot, Ron provides insight into how quantum mathematicians solved the Grandfather’s Paradox and made time travel possible. According to new experiments in quantum mechanics, time travel is possible without any conflicts or paradoxes.