Not an urban legend, but the whole "butlerian jihad" background of Dune. It really made me think about technology.

I always imagined the times before the jihad not as a terminatoresque apocalypse but rather as a really advanced civilization with similar problems to ours. People connected to their machines (like social media) and the ones in power wielding the power those machines enact over hummanity.

The jihad for me is not a war between man and machine. I imagined it more as a social uprising, a rebel movement to abhor the control of a few over hummanity using technology. There was violence for sure (Haven't read brian's books) but is not your normal "machines bad" war.

Off course after 10k years or more, the people of dune only remember the "machines bad" part. But the way society is made up and what people can achieve in dune, tells me that hummanity wanted to trascend what machines could do.