Saw a round dish "plane" zip out of existence. So fast it looked like the speed of light, or going thru wormhole. Positive time travel is real... Was thinking why we don't see time travelers in our lives? Got me thinking about the device you might go back into time with. Let's pretend its a Delorean for the moment. It seems that life is based in a quantum verse universe, who really knows? Let's say you somehow get a time traveling Delorean and go back 20 years. Very plausible so far, if you could only get the equipment somehow. Now here is the paradox.... You are back in time, to the way life was 20 years ago from your previous identical(almost) dimension. The only difference is that you now exist in this dimension as the you that you are. There would be a younger you if you are over 20. The butterfly effect quite possibly starts to begin due to your presence. You hang out for a while, lets say 10 years. Delorean still works. Now you would like to go back in time again... Say 10 years. What happens? A) You return to your starting point for time travel, and the world is the same as when you first traveled back in time (1 you) Or B) You see yourself showing up in a Delorean. There are now 2 of you. Neither of these scenarios are possibly incorrect. If you can go time traveling back in time, why wouldn't you see another copy of yourself? Or maybe your car only operates off the original timeline? Meaning you can never see a copy time traveler of yourself? Any idea how this boils down into physics. Is this part of the quantum verse? How do the aliens do it, they can zip in from wormholes it appears, and their craft can do it from any point in a XYZ axis it seems. I think part of the reason we don't see a lot of time travelers is there appears to be advanced tech in place to stop it. Weapons that can evaporate anything with a different quantum signature maybe? It seems very controlled. It also raises a lot of questions about 3rd parties knowing where you will be at XYZ in time, as an example, if 2 way communication is possible from past/present. This should be doable with quantum entanglement. Seeing as how you are traveling backward in time, wouldn't you need a way to identify your "current" reality to the time machine? Like a unique ID code or something. I would think it could just go off of the one you are in, but if that was the case, you would see another copy of yourself if you went back in time. Mind boggling if you went back 20 years, then 100 years, had kids, knowing that alternate you would be showing up in your craft in 80 years into the future.