Re: Writing sci-fi
I really need to get on with writing my short story on the runaway effect of self replicating nanomachines. Basically put, it's game over if you make them.
Not because they are dangerous. But because of over confidence. An atomic bomb cannot "run away". But a nanomachine (possibly) could. So I hope we never come up with a working design.
In my fiction, it just takes over, slowly but surely. It's the pig headedness that gets you in the end.