Some of the stuff I've posted - http://lesswrong.com/lw/ksa/the_metaphormyth_of_general_intelligence/ , http://lesswrong.com/lw/hvo/against_easy_superintelligence_the_unforeseen/ - could be used to build a good anti-MIRI steelman, but I've not seen them used.
The most convincing anti-MIRI argument? AI may not develop in the way you're imagining. The most convincing rebuttal? We only need a decent probability of that happening to justify worrying about it.
I'm giving a talk to the Boulder Future Salon in Boulder, Colorado in a few weeks on the Intelligence Explosion hypothesis. I've given it once before in Korea but I think the crowd I'm addressing will be more savvy than the last one (many of them have met Eliezer personally). It could end up being important, so I was wondering if anyone considers themselves especially capable of playing Devil's Advocate so I could shape up a bit before my talk? I'd like there to be no real surprises.
I'd be up for just messaging back and forth or skyping, whatever is convenient.