I wish Pei had taken the time to read the articles I repeatedly linked to, for they were written precisely to explain why his position is misguided.

The reactions I got (from a cognitive scientist and another researcher) is that Bostrom is a "sloppy thinker" (original words) and that SI's understanding of AGI is naive.

Michael Littman told me he is going to read some of the stuff too. I haven't got an answer yet though.