“Everything will be radically different in 500 years to an extent that might strain our imaginations” seems about right. I’d go so far as to wager that if you

“Everything will be radically different in 500 years to an extent that might strain our imaginations” seems about right. I’d go so far as to wager that if you time traveled back to 1521 and brought somebody to the present, they’d find it to be alien as well. Of course to verify my thesis I’d have to teach my 1521 passenger the current meaning of “alien” and the rules about my intended interpretation of my blog post to make my point clear to them.