Personally, I avoid deus ex machina like the plague - if you have to use one, it means you failed to set up the universe and the plot properly. It's like a whodunnit where there's no actual way for the reader to identify the perpetrator before the climactic reveal: there's no sense of closure for the reader.
Charles StrossI wish I was still an atheist. Believing I was born into a harsh, uncaring cosmos - in which my existence was a random roll of the dice and I was destined to die and rot and then be gone forever - was infinitely more comforting than the truth. Because the truth is that my God is coming back. When he arrives I’ll be waiting for him with a shotgun. And I’m keeping the last shell for myself.
Charles StrossNothing stands for content-free corporate bullshit quite like PowerPoint. And that's just scratching the surface.
Charles StrossTo boldly go where no uploaded metahuman colony has gone before' has a certain ring to it, doesn't it?
Charles Stross