I am in no way qualified to comment on this but personally I think that time travel is unlikely, and if it is possible, one would not be able to change past or future events. I've often wondered though if an extra dimensional life form would be able to see all of our time stretched out before them? Just as a 3D being would see a dimension that a 2D being couldn't.
Having said all that, I have read that these experiments might imply some passing of information back through time on the quantum level.
Here and
here.