Ted Chiang at The New Yorker:
Some proponents of an intelligence explosion argue that it’s possible to increase a system’s intelligence without fully understanding how the system works. They imply that intelligent systems, such as the human brain or an A.I. program, have one or more hidden “intelligence knobs,” and that we only need to be smart enough to find the knobs. I’m not sure that we currently have many good candidates for these knobs, so it’s hard to evaluate the reasonableness of this idea. Perhaps the most commonly suggested way to “turn up” artificial intelligence is to increase the speed of the hardware on which a program runs. Some have said that, once we create software that is as intelligent as a human being, running the software on a faster computer will effectively create superhuman intelligence. Would this lead to an intelligence explosion?
more here.