Yeah...but by then, the humans would be so fucking inbred that it would be scary to meet up with them...
And if you are travelling back in time...would that change you inside the vessel, as well, or would it merely go on with you as you are? In theory, it almost seems plausible that you would start to go back in time, and if you're 40, by the time you get that far back, you are reduced to nothing...therefore, never truly going back in time to show the human race what there is to see... Does that make sense? I haven't eaten in days...have a fever...and I just saw myself in the mirror, and I look half dead...