Not in my lifetime

I am embarrassed to admit (don’t tell anyone) that when I first saw the interior doors on the Enterprise slide open automatically as crew members walk up to them, I was certain that such a mechanism would not be invented during my years on Earth.
— Astrophysicist Neil deGrasse Tyson, on his impressions of the original Star Trek series. (From the essay Happy Anniversary, Star Trek, in Space Chronicles, p. 197)