Some time ago, I read that the Cylons were originally designed and built by a dying reptilian race called the Cylons. As much as this race hated humans, they found the human design the most efficient to serve them. Recently, a link appeared on this site about the Cylons of Battlestar Galactica ( http://www.moviematics.com/2010/08/27/the-cylons-on-battlestar-gala...
). This post claims the humans designed and built the Cylons. Obviously, this is a contradiction. I can see merits in both storylines.
1 Where the Cylons and the humans had a less than cordial meeting which caused the Cylons to hate the humans so much that they would build a robotic race, complete with series from workers to managers to warriors to serve the dying race and annihilate the humans. In the time that the wars went on, the reptilians died off and the Cylon war machines continued self replicate. (Klingons meet humans theme)
2 Where the human built the Cylons for performing menial and dangerous tasks and the Cylons becoming self aware and rebelling. (Planet of the Apes theme).
As I go over these scenarios, I am more tempted to go with the latter theme since Planet of the Apes was very popular at the time.