Hello internet. Today I will be talking about the subject of time travel and if it's possible, especially in the hit series "Doctor Who," which is a show you really should be watching. But if you don't like British sci-fi, well...sorry.
Anyways, in the show Doctor Who, the Doctor steals one of their home worlds' TARDIS (Time and Relative Dimension in Space) which is basically a time machine, and crash-lands it in the earth (what a coincidence). The TARDIS is capable of moving across dimensions and through time, even to back to the Big Bang (the Doctor noted it to be "quite annoyingly bright"), and even to other universes (story for another time). So is time travel really possible?
Well...in short, maybe...maybe not. But if we ever do time travel, it's a thing best left to the time lords (the Doctor's race). This is because there are a heck of a lot of paradoxes that could potentially rip a hole in the space-time continuum, or destroy the universe itself.
An example of a paradox is The Grandfather Paradox. In this paradox, a time traveler travels back in time to the time of his ancestor, and kills him before he had any children. This would make the traveler's parents not exist, thus making the traveler not exist either. But if the traveler doesn't exist, then the traveler wouldn't have traveled back in time to kill his grandfather, so the grandfather would still be living, and the process would start all over again.
However there are several hypotheses that can solve the grandfather paradox and other paradoxes such as:
The time line protection hypothesis
This theory states that a time traveler, no matter what he had done, would not be able to create a time paradox, due to a distortion of probability. A person traveling back in time to kill his grandfather, could have appeared in a wrong place, or had his gun jammed, thus allowing his grandfather to have offspring.
Multiple universes hypothesis
This theory states that there are infinite number of universes, collectively known as the "multiverse". If a person is about to travel back in time, he will create his own different universe as he goes in the past. So if he kills "his" grandfather, a paradox wouldn't happen because the grandfather that he has killed is not his own grandfather from the universe he came from, but that of the version of himself in the universe he is now in.
The time line corruption hypothesis
This hypothesis is the one that most people make sense of. This theory states that if the traveler went back in time and did anything in the past, then the present would be corrupted.
So yeah. Time travel. Tricky stuff.
Interesting fact of the day: North Korea has banned blue jeans because they are a symbol of America.
No comments:
Post a Comment