Time Travel, People. WHAT is the most plausible theory?

Created by sonyablade, 3 y 3 mo 1 h 44 m ago.

Let's get this down. If time travel were real, or if it is and we dunno or whatever �???how would it work?

There's the usual butterfly effect theory; what you do in your past directly affects your future (DC's cup of tea�???, as well as practically any other franchise that is too lazy to think up a complex time travelling system)

Then there's the reality-line theory; what you do in your past creates a new reality that is separate from your reality (Watch the MCU continuity of the Infinity War, though you probably have�??�)

Then there's a mixture of both; what you do changes your reality-line while incorporating you into the new line of reality, but still preserving an old line of reality where your actions were different, and where the you that you are does not exist (Watch this anime called Steins; Gate. It's an intricate masterpiece�???)

So, which one is the most plausible theory?

I personally believe the one in Steins; Gate. Maybe because it was explained by fictional scientists in a very realistic manner? Does that make sense?
But what do you guys think? What would time travel be like? Or if you have your own theory, I'd be glad to hear it.