Short answer: strong AI is both possible and highly probable. That being the case we have to think about the best ways to deal, with a virtually impossible to avoid outcome of the internet. That is, at some point it basically starts to build itself. And when it does... what will it build?
If Strong AI turns out to not be possible, what are our best expectations today as to why?
I'm thinking of trying myself at writing a sci-fi story, do you think exploring this idea has positive utility? I'm not sure myself: it looks like the idea that intelligence explosion is a possibility could use more public exposure, as it is.
I wanted to include a popular meme image macro here, but decided against it. I can't help it: every time I think "what if", I think of this guy.