[FredZarguna]

It’s rubbish. If superluminal travel were possible, we would already have been visited by races (possibly including our own) from our own future. It isn’t. The Alcubierre “Warp Drive” isn’t physics; it’s fiction.

[Windflier]

If superluminal travel were possible, we would already have been visited by races (possibly including our own) from our own future.

Who's talking about time travel?

The Alcubierre “Warp Drive” isn’t physics; it’s fiction.

So was heavier-than-air manned flight, until the Wright brothers did it. Landing men on the moon was widely ridiculed at one time, because it seemed so far-fetched.

You live in an age of technological marvels and breakthroughs. Things are yet to be invented that seem like pure science fiction to you today.

[Nowhere Man]

I think the light barrier can be broken. How? I don't know, I have a few ideas maybe on what I have read but so far, we can't quite put our finger on it. I look at it this way:

Man in 1900: We will never have heavier than air flight.
Man in 1910: We have planes that go 75 MPH and carry one man.
Man in 1920: We have a plane that can cross the Atlantic but we will never have spaceflight to go to the Moon.
Man in 1930: We have airplanes that can go 150 MPH.
Man in 1940: We have airplanes that can go 300 MPH and cross oceans but we will never break the sound barrier.
Man in 1950: We have bigger planes that can go close to 400 MPH and cross oceans but jets are on the way.
Man in 1960: We have jets that can cross oceans at 600 MPH and manned space travel is just around the corner.
Man in 1970: Same plus we landed on the Moon.

I daresay we have reached a plateau in some ways and need a way to get off of this rock, but I think it is doable if we have the will to do it.

[Boogieman]

You can’t go back in time even if you could find a way to travel faster than the speed of light. Time dilation doesn’t work that way, because you can’t dilate something less than zero.