If you could eliminate one person from history...who would it be?

[Selatius]

271. Technically, time travel backward is impossible from what we know.

If I went back in time to kill my father before he met my mother, I'd erase myself in the sense that I would no longer exist in this timeline.

However, from what we know of physics, the current speculation is I would be transferred into a separate timeline where my father did die, but only I would be the one to know how I ended up in the alternate timeline or universe where the desired event did occur. I wouldn't be able to go back to my original timeline without also having the ability to rip holes into alternate universes and get at my old timeline.

In a strict sense, time travel to the past is impossible if we assume what I said was true. The second you make the journey backward in time and alter it, you've eliminated yourself from this timeline. You will end up in an alternate universe by the time you end your journey and go back to the present.