Glados could very well be "joking" about humans outside. How about using test subjects to repopulate earth after combine harvested everyone? Maybe Glados will try to make the whole earth a giant lab!
Question, how do we know that the portal gun was invented that early, the white gel for portals was in the 70s chambers if I remember correctly. Also curiously we know very little as far as early portal guns go.
damn, i was at that door at the 1st play-through and was even thinking "if i had hands i would definitely try to move that furniture and see whats on the other side of that door :)
now now, dont talk that bad about gordon :D, remember he is you :P but I have to agree that we most likely didnt see the full force of the combine, I mean it was 20 years, they probably never tought there will be a rebellion.
i was just browsing trough some stuff in the silo and i found a box with lots and lots of stamps, so i suppose it was sent from far away, now the question is where it was sent, it must have been sent over 20 years ago (or maybe the combine lost the war to the post office, and we are all...