Well I was considering this today. We've progressed exponentially technologically in the last century. Time travel is still impossible, yes, but hardly as extraneous an idea as it used to be. Well, assuming humanity continues its pattern of incredible technological growth...wait...if time travel (let's say in this instance, backward time travel) becomes possible...why haven't we ever seen anybody come from the future? My theory is that we will be destroyed before this technology becomes possible, or of course that it will never be possible. But as I said before, many consider it to be in the not-too-distant future...
