Haven't you noticed? They're adapted from something else and the words are changed to make 'em futuristic. My favorite is John Henry picking up his shovel again against some mega future-machine!
I did wonder about that but never made the connection. It's not really high on my list of priorities, but I did pause occasionally and think about somebody sitting at a desk and dreaming up these things. I've no doubt somebody on the main website will have referenced them all by now!
First game I played I got a 'failure' screen that I couldn't make sense of since it had no explanation of who (if anybody) won.
The impression I have ATM is that there is a huge amount of content compared with Civ V (although the parallels are not hard to spot - energy=credits; health=happiness; research =er, research; etc, etc.), but as yet I'm finding it hard to get really involved with the game (though happy to persevere pending an expansion