Hello nerds. As someone with limited knowledge of quantum physics and such, I can't claim to be an expert on the subject of time travel, but I have a very damning piece of the equation that I'd like to bring up. If there was such a thing as a time machine, it would require several important bits of information to work. Everyone can agree that you would have to input the amount of time you're intending to travel, and your desired location. However, there's a serious oversight with the latter. Simply inputting, say, a simple coordinate like your target latitude and longitude wouldn't work. You see, the Earth, our solar system, and our entire galaxy are all shooting through space. The data you would have to input for your desired location is extremely complex, as it would have to take into account the Earth's exact position in the universe. Time is also relative. If time progresses at varying rates as evidenced by special relativity, then at what rate would time progress for an object traveling backwards in time? Ex., if you simply tried traveling one second into the past, not only would you theoretically be placed one second ahead of the Earth in space, but for one second, you would leave the forces that are determining your progression through time, and that one second as observed by you could translate into undefinable amounts of time for the rest of the universe. To conclude, I'm not saying I know reverse time travel is impossible, but I'm basically telling you that it is. At least for you and me, or anything capable of observing it.